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WO2020251104A1 - System capable of fuel supply, ballast water replacement, and clean water supply using natural gas hydrate in minimal ballast water ship - Google Patents

System capable of fuel supply, ballast water replacement, and clean water supply using natural gas hydrate in minimal ballast water ship Download PDF

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Publication number
WO2020251104A1
WO2020251104A1 PCT/KR2019/007273 KR2019007273W WO2020251104A1 WO 2020251104 A1 WO2020251104 A1 WO 2020251104A1 KR 2019007273 W KR2019007273 W KR 2019007273W WO 2020251104 A1 WO2020251104 A1 WO 2020251104A1
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WO
WIPO (PCT)
Prior art keywords
natural gas
ballast water
gas hydrate
fuel
ship
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2019/007273
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French (fr)
Korean (ko)
Inventor
강희진
최진
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Institute of Ocean Science and Technology KIOST
Original Assignee
Korea Institute of Ocean Science and Technology KIOST
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Korea Institute of Ocean Science and Technology KIOST filed Critical Korea Institute of Ocean Science and Technology KIOST
Priority to CN201980093892.5A priority Critical patent/CN113557197A/en
Priority to JP2021551821A priority patent/JP7248813B2/en
Publication of WO2020251104A1 publication Critical patent/WO2020251104A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/04—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods solid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/14—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed pressurised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B63B43/06—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability using ballast tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0665—Tanks, e.g. multiple tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0673—Valves; Pressure or flow regulators; Mixers
    • F02D19/0678—Pressure or flow regulators therefor; Fuel metering valves therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
    • F02D19/081—Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0239—Pressure or flow regulators therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

  • the present invention relates to a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using natural gas hydrate. More specifically, after extracting natural gas from natural gas hydrate, it is a minimum ballast water linear vessel.
  • the present invention relates to a system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship with minimum ballast water using natural gas hydrate that can be used as fuel for a dual-fuel engine.
  • the present invention relates to a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that can rectify and recycle fresh water remaining after natural gas extraction.
  • the present invention provides a system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship with minimum ballast water by using natural gas hydrate that can reduce green house gas through mixed combustion of natural gas and hydrogen. About.
  • the energy storage efficiency of natural gas hydrate is less than one-third of that of liquefied natural gas, and has three times more storage space and weight. For this reason, it is recognized that using natural gas hydrate as fuel for a ship requires a fuel tank with a relatively large volume, which is not acceptable in the ship design procedure.
  • ballast water for stable operation in empty cargo conditions.
  • the role of ballast water is to maintain stability of the ship, trim and heel control, secure immersion depth of the propeller, and proper draft. Reduction of slamming through securing, Reduction of bending moment of the ship, and Relieve the shear force of the ships.
  • ballast water used in ships varies by ship type, it is generally about 30% to 40% of DWT (dead weight), and passenger ships are known to additionally operate about 10% of ballast water compared to cargo ships such as container ships and bulk carriers. have.
  • Ballast Water Management Due to the destruction of the marine environment due to the long-distance movement of marine microorganisms contained in ballast water, the measures of the Ballast Water Management (BWM) Convention came into effect in September 2017, and all ships' ballast water is microbes before discharge. As a process of killing and confirming is required, problems such as installation of a ballast water treatment device, an increase in operating costs, and an increase in anchoring period due to the inspection of ballast water at the port are emerging.
  • BWM Ballast Water Management
  • ballast water and minimum ballast water ships For the realization and commercialization of ballast water and minimum ballast water ships, (1) maintenance of attitude control capability required for ship operation without using ballast water, and (2) securing proper propeller immersion depth , (3) Securing resistance propulsion performance of proper water, (4) Securing countermeasures against bow slamming during flight, (5) Securing countermeasures against loads borne by the hull during flight, (6) Securing operability in existing ports (7) Securing easy technical realization and (8) Securing life cycle economics are indispensable.
  • the present invention was derived to solve the above-described problem, and after extracting natural gas from natural gas hydrate, it is possible to use natural gas hydrate that can be utilized as a fuel for a dual fuel engine of a minimum ballast water vessel. It is intended to provide a system capable of supplying fuel, replacing ballast water and supplying fresh water.
  • the present invention is to provide a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that can be recycled at a port of call by rectifying fresh water remaining after natural gas extraction.
  • the present invention provides a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that can reduce green house gas through mixed combustion of natural gas and hydrogen. I want to.
  • the present invention is based on replacing the required ballast water using the large weight and volume of natural gas hydrate instead of LNG and ship fuel oil (HFO) by utilizing the hull-form of the minimum ballast water vessel. It is intended to provide a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that enables water navigation.
  • HFO LNG and ship fuel oil
  • the natural gas hydrate tank container can be loaded on a ship in the form of a fixed or tank container, and in the case of a ship that transports natural gas hydrate, natural gas that can load natural gas hydrate without separate LNG or HFO bunkering work. It is intended to provide a system capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using hydrate.
  • the present invention uses a dual fuel engine to maximize the cargo load by utilizing existing LNG and HFO as ship fuel in the case of a full operation without ballast water. It is intended to provide a system capable of supplying fuel, replacing ballast water and supplying fresh water.
  • the present invention is to provide a system in which natural gas hydrate and hydrogen are loaded in a tank container and mounted on a ship, and then natural gas and hydrogen are extracted and mixed from the loaded tank container and supplied as fuel for the ship.
  • one or more natural gas hydrate tank containers connected to the fuel supply system of the minimum ballast water vessel Stacked natural gas hydrate tank container stack, a natural gas regulator that maintains a constant pressure of natural gas extracted from the natural gas hydrate tank container stack, and the natural gas to prevent pipe damage or clogging during extraction of the natural gas
  • a heat exchanger for controlling the temperature of, a fuel flow meter connected to the heat exchanger and measuring a flow rate of natural gas discharged through the heat exchanger, a fuel supply pipe and the fuel supply pipe connected to the fuel intake part of the engine in the minimum ballast water vessel It may include a fuel flow control valve for controlling a mixing ratio between the air sucked through and the natural gas sucked through the heat exchanger.
  • the natural gas hydrate tank container stack uses the heat of exhaust gas or coolant discharged from the engine to adjust the phase equilibrium state of the natural gas hydrate in a solid state. It may be characterized by regasifying.
  • the natural gas regulator may be characterized in that a constant natural gas supply pressure is maintained by collecting pressures of natural gas discharged from each of the one or more natural gas hydrate tank containers.
  • the present invention may further include a natural gas control valve positioned between the natural gas regulator and the heat exchanger and controlling a state of discharge of natural gas discharged from the natural gas regulator.
  • the heat exchanger may be characterized in that it performs heat exchange to prevent damage or clogging of a pipe during extraction of natural gas discharged through the natural gas control valve.
  • the fuel supply pipe may include a throttle body, and an amount of air sucked through the throttle body may be transmitted to the fuel flow control valve.
  • the throttle body may include a throttle valve that adjusts an amount of air sucked through the fuel supply pipe.
  • the natural gas hydrate tank container stack is provided to change the arrangement state on the ship according to the weight distribution of one or more containers loaded on the minimum ballast water vessel, instead of the ballast water of the minimum ballast water vessel It may be characterized in that the vertical and horizontal slope of the minimum ballast water vessel is adjusted by the natural gas hydrate tank container stack, and an appropriate draft is secured.
  • an emergency shut-off valve for preventing explosion of the natural gas hydrate tank container between the natural gas hydrate tank container stack and the fuel supply pipe, an emergency shut-off valve for preventing explosion of the natural gas hydrate tank container, a flashback pressure valve, and an explosion preventer It may be characterized in that any one or more of (Detonation Arrester) is provided.
  • the system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship using natural gas hydrate includes at least one natural gas hydrate tank container and at least one hydrogen connected to the fuel supply system of the ship.
  • a natural gas hydrate tank container stack in which tanks are stacked, a natural gas regulator controlling the pressure of natural gas discharged from the natural gas hydrate tank container stack, a hydrogen regulator controlling the pressure of hydrogen discharged from the hydrogen tank, the natural gas
  • a heat exchanger controlling the temperature of natural gas discharged through a control valve, a fuel flow meter connected to the heat exchanger and measuring the flow rate of natural gas discharged through the heat exchanger, and connected to the hydrogen regulator, and discharged from the hydrogen regulator
  • a hydrogen flow meter that measures the flow rate of hydrogen, a fuel supply pipe connected to the fuel intake part of the engine in the ship, and a fuel flow control valve that controls a mixing ratio between the air sucked through the fuel supply pipe and the natural gas discharged through the heat exchanger.
  • the fresh water remaining after the natural gas extraction in the natural gas hydrate tank container stack is applied by replacing it with the ballast water of the minimum ballast water vessel, and supplying the fresh water so that the fresh water can be collected and recycled at the port of call. It can be characterized.
  • the present invention has the advantage of being able to recycle by collecting and treating fresh water remaining after natural gas extraction at a port of call.
  • the present invention has the advantage of being able to reduce green house gas through mixed firing of natural gas and hydrogen.
  • ballast water required by utilizing the hull-form of the minimum ballast water vessel is replaced by using a large weight and volume of natural gas hydrate instead of LNG and ship fuel oil (HFO). It has the advantage of making it possible to operate in ballast water.
  • the natural gas hydrate tank container can be loaded on a ship in a fixed or tank container form, and in the case of a ship that transports natural gas hydrate, a natural gas hydrate is loaded without separate LNG or HFO bunkering work. It has the advantage of supplying fuel to ships only by doing so.
  • the vertical and horizontal equilibrium of the vessel It has the advantage of being able to play a role in matching.
  • FIG. 1 is a view showing the configuration of a system 100 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing the configuration of a system 200 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to another embodiment of the present invention.
  • FIG. 3 is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are disposed together with a plurality of containers in a ship to which the minimum ballast water is applied.
  • FIG. 4 is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are arranged to adjust the heel and trim of the ship to which the minimum ballast water alignment is applied to be.
  • FIG. 5 is a view showing a process of rectifying the fresh water in the natural gas hydrate tank container stacks 110 and 210 shown in FIG.
  • FIG. 6 is a series of processes of supplying natural gas hydrate fuel to a dual fuel engine through a system 100 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using the natural gas hydrate shown in FIG. 1 It is a flow chart showing the order of.
  • FIG. 7 is a series of processes of supplying natural gas hydrate fuel to a dual fuel engine through a system 200 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using the natural gas hydrate shown in FIG. 2 It is a flow chart showing the order of.
  • FIG. 1 is a view showing the configuration of a system 100 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to an embodiment of the present invention.
  • a system 100 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using natural gas hydrate according to an embodiment of the present invention is largely a natural gas hydrate tank container stack 110 , A natural gas regulator 120, a natural gas control valve 130, a heat exchanger 140, a fuel flow meter 150, and a fuel flow control valve 160.
  • the natural gas hydrate tank container stack 110 refers to a natural gas hydrate tank container in which one or more natural gas hydrate tank containers are stacked. At this time, since the natural gas hydrate in each natural gas hydrate tank container 110a is in an ice-like solid state, the heat of exhaust gas or coolant discharged from the engine 300 of the ship is used, or Under reduced pressure, natural gas is extracted from solid natural gas hydrate.
  • the extracted natural gas is supplied to the natural gas regulator 120 through a pipe.
  • the natural gas regulator 120 maintains a constant pressure of natural gas discharged from each natural gas hydrate tank container 110a.
  • the natural gas whose discharge pressure is constant by the natural gas regulator 120 is delivered to the heat exchanger 140 through the natural gas control valve 130.
  • the natural gas control valve 130 is located between the natural gas regulator 120 and the heat exchanger 140 and serves to adjust the state of the natural gas discharged from the natural gas regulator 120.
  • the heat exchanger 140 controls the temperature of natural gas discharged through the natural gas control valve 130.
  • the discharge pipe may become hydrated and cause pipe blockage, so that the heat exchanger 140 is discharged by the natural gas discharged through the natural gas control valve 130. It plays a role in preventing it from being damaged or blocked.
  • the mixing ratio of air and natural gas is constantly adjusted through the fuel flow control valve 160.
  • the fuel flow control valve 160 is such that the mixing ratio between the air sucked through the fuel supply pipe 310 connected to the fuel intake of the engine 300 and the natural gas discharged through the heat exchanger 140 is kept constant. And also check the flow rate.
  • the engine 300 may mean a dual fuel engine.
  • the fuel supply pipe 310 includes a throttle body 320, and an amount of air sucked into the fuel supply pipe 310 through a throttle valve included in the throttle body 320 may be adjusted.
  • the amount of air inhaled through the throttle valve may be applied to the fuel flow control valve 160 to control the exact mixing ratio of air and natural gas while being transmitted to the fuel flow control valve 160.
  • the natural gas hydrate tank container stack 110 has a considerable weight by fresh water (fresh water) occupying 80% of the volume, and in the present invention, the natural gas hydrate tank container stack 110 is loaded on the ship.
  • fresh water fresh water
  • the weight of one or more containers it is possible to control the longitudinal and transverse attitude of the ship in place of the ballast water of the ship. This will be described later with reference to FIGS. 3 and 4.
  • an emergency shutoff valve Quick Closing Valve
  • a flashback pressure valve in order to prevent the explosion of the natural gas hydrate tank container (110a) between the natural gas hydrate tank container stack 110 and the fuel supply pipe 310, an emergency shutoff valve (Quick Closing Valve).
  • a flashback pressure valve in order to prevent the explosion of the natural gas hydrate tank container (110a) between the natural gas hydrate tank container stack 110 and the fuel supply pipe 310.
  • FIG. 2 is a diagram showing the configuration of a system 200 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to another embodiment of the present invention.
  • a system 200 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using natural gas hydrate, supplies fuel in a minimum ballast water vessel using the natural gas hydrate shown in FIG.
  • the natural gas hydrate tank container stack 210 in FIG. 2 includes a natural gas hydrate tank container 210a and a hydrogen tank 210b.
  • the hydrogen tank 210b replaces some natural gas hydrate tank containers 210a.
  • both natural gas and hydrogen can be supplied from the natural gas hydrate tank container stack 210.
  • the natural gas is a fuel supply pipe 310 of the engine 300 through a natural gas regulator 220, a natural gas control valve 240, a heat exchanger 250, a fuel flow meter 260, and a fuel flow control valve 280.
  • hydrogen is supplied to the fuel supply pipe 310 through the hydrogen regulator 230 and the hydrogen flow meter 270.
  • the hydrogen regulator 230 collects different discharge pressures of hydrogens discharged from each of the hydrogen tanks 210b so that a constant discharge pressure is maintained. Hydrogen whose discharge pressure is constant by the hydrogen regulator 230 is transferred to the hydrogen flow meter 270.
  • the hydrogen flow meter 270 serves to measure the flow rate of hydrogen, and the hydrogen through the hydrogen flow meter 270 is transferred to the fuel supply pipe 310 and sucked together with air.
  • FIG. 3 is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are disposed together with a plurality of containers on a ship to which the minimum ballast water is applied
  • FIG. 4 is a minimum balance It is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are arranged to adjust the heel and trim of the ship to which the vertical alignment is applied.
  • the ship of FIG. 3 includes natural gas hydrate or natural gas hydrate and hydrogen-filled natural gas hydrate tank container stacks 110 and 210 together with a plurality of container boxes. Indicates the loaded state.
  • each container box has a different weight according to the contents, the center of gravity of the ship is not constant when viewed as a whole, but is biased to one side according to the weight of the containers.
  • the weight of the fresh water which is 80% of the volume remaining after natural gas extraction, is used to match the center of gravity of the ship. You will be able to.
  • the natural gas hydrate tank container stacks 110 and 210 are not formed to be fixed in one position, but may be moved at any position according to the weight distribution of container boxes loaded on the ship.
  • MIBS minimum ballast water
  • NOB ballast water
  • the natural gas hydrate tank container stacks 110 and 210 are balanced in the lateral and longitudinal directions based on the horizontal plane of the ship. It is arranged to fit.
  • the horizontal and longitudinal balances based on the horizontal plane of the ship are adjusted by varying the arrangement of the natural gas hydrate tank container stacks (110, 210). You will be able to fit.
  • FIG. 5 is a view showing a process of rectifying the fresh water in the natural gas hydrate tank container stacks 110 and 210 shown in FIG.
  • fresh water remaining in the natural gas hydrate tank container stacks 110 and 210 is supplied to a collection tank on land through a pump and collected.
  • the water purification device installed on land may be composed of a first pump (a), a primary fresh water storage tank (b), a filter device (c), a secondary fresh water storage tank (d) and a second pump (e). .
  • the first pump (a) serves to discharge fresh water from one or more natural gas hydrate tanks, and the discharged fresh water is first stored in the primary fresh water storage tank (b).
  • the fresh water stored in the primary fresh water storage tank (b) may contain dissolved natural gas, impurities, and foreign substances, it is rectified through the filter device (c).
  • the number of filter devices (c) is not limited, and as the number of filter devices (c) increases, the rectification effect may be maximized.
  • the fresh water remaining after the regasification of natural gas hydrate can be collected at the port of call and then recycled at the supply point, it can have the advantage of replacing the desalination plant in a water shortage area.
  • FIG. 6 is a series of processes of supplying natural gas hydrate fuel to a dual fuel engine through a system 100 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using the natural gas hydrate shown in FIG. 1 Is a flow chart showing the order of
  • FIG. 7 is a natural gas to a dual fuel engine through a system 200 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using the natural gas hydrate shown in FIG. It is a flow chart showing the process of supplying hydrate fuel in a series of order.
  • natural gas is extracted by vaporizing natural gas hydrate in a natural gas hydrate tank container using heat of exhaust gas or heated cooling water discharged from an engine (dual fuel engine) (S101). Then, the natural gas discharge pressure is constantly adjusted through the natural gas regulator (S102), and the temperature is controlled by continuously supplying constant heat to the natural gas through the heat exchanger (S103). Then, the flow rate of natural gas is measured through the fuel flow meter (S104), and air is sucked from the fuel supply pipe connected to the fuel intake part of the engine, and the natural gas is mixed and the air and natural gas are mixed through the fuel flow control valve. The mixing ratio of the liver is adjusted (S105). Then, the mixed fuel (air + natural gas) is supplied to the engine (S106). Heat of exhaust gas or coolant discharged by the exhaust stroke of the engine is supplied to the natural gas hydrate tank container again, so that the above steps are repeatedly performed (S107).
  • the natural gas discharge pressure is constantly adjusted through the natural gas regulator (S102), and the temperature is controlled by continuously supplying constant
  • natural gas is extracted by vaporizing natural gas hydrate in a natural gas hydrate tank container using heat of exhaust gas or coolant discharged from an engine (dual fuel engine) (S201). At the same time, the hydrogen in the hydrogen tank is discharged (S202).
  • the natural gas discharge pressure is constantly adjusted through the natural gas regulator (S202), and the temperature is controlled by continuously supplying constant heat to the natural gas through the heat exchanger (S203).
  • the hydrogen regulator smoothly adjusts the discharge pressure of the discharged hydrogen (S202').
  • the flow rate of natural gas is measured through the fuel flow meter (S204), and at the same time, air is sucked from the fuel supply pipe connected to the fuel intake part of the engine, and hydrogen is supplied to the fuel supply pipe to mix with natural gas.
  • the mixing ratio between air and natural gas is adjusted through the flow control valve (S205).
  • the mixed fuel air + natural gas
  • Heat of exhaust gas or coolant discharged by the exhaust stroke of the engine is again supplied to the natural gas hydrate tank container so that the above steps are repeatedly performed (S207).
  • the present invention after natural gas is extracted from natural gas hydrate, it can be used as a fuel for a dual fuel engine of a ship with a minimum ballast water.
  • the present invention is widely used in the shipbuilding and marine industry to realize its practical and economic value. It is a technology that can be.

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Abstract

The present invention relates to a system capable of fuel supply, ballast water replacement, and clean water supply using natural gas hydrate in a minimal ballast water ship, wherein the system can extract only natural gas from natural gas hydrate and then use the extracted natural gas as fuel for a dual-fuel engine of a minimal ballast water ship.

Description

천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템A system capable of supplying fuel, replacing ballast water, and supplying fresh water within a ship using natural gas hydrate

본 발명은 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템에 관한 것으로서, 보다 구체적으로는, 천연가스하이드레이트에서 천연가스를 추출한 후 이를 최소평형수 선형 선박의 듀얼퓨얼 엔진의 연료로써 활용할 수 있는 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템에 관한 것이다.The present invention relates to a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using natural gas hydrate. More specifically, after extracting natural gas from natural gas hydrate, it is a minimum ballast water linear vessel. The present invention relates to a system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship with minimum ballast water using natural gas hydrate that can be used as fuel for a dual-fuel engine.

또한, 본 발명은 천연가스 추출 후 잔류하는 청수를 정류하여 재활용할 수 있는 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템에 관한 것이다.In addition, the present invention relates to a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that can rectify and recycle fresh water remaining after natural gas extraction.

또한, 본 발명은 천연가스와 수소의 혼소(mixed combustion)를 통해 그린하우스가스 저감을 도모할 수 있는 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템에 관한 것이다.In addition, the present invention provides a system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship with minimum ballast water by using natural gas hydrate that can reduce green house gas through mixed combustion of natural gas and hydrogen. About.

일반적으로, 천연가스하이드레이트의 에너지 저장효율은 액화천연가스대비 3분의 1이 되지 못하고 세배 이상의 저장공간과 중량을 가진다. 이러한 이유로 천연가스하이드레이트를 선박의 연료로 활용하는 것은 상대적으로 훨씬 큰 체적의 연료탱크가 요구되어 선박 설계 절차상 수용이 불가능한 것으로 인식되고 있다. In general, the energy storage efficiency of natural gas hydrate is less than one-third of that of liquefied natural gas, and has three times more storage space and weight. For this reason, it is recognized that using natural gas hydrate as fuel for a ship requires a fuel tank with a relatively large volume, which is not acceptable in the ship design procedure.

반면에 대부분의 선박은 공선(Empty Cargo) 상태에서 안정적인 운항을 위해 평형수(ballast water)를 활용한다. 선박 평형수의 역할은 선박복원성능의 유지(Maintain stability of the ship), 선체의 종횡방향 자세 제어(Trim and heel control), 추진기의 적정 침수깊이 유지(Secure immersion depth of the propeller), 적정흘수의 확보를 통한 선수슬래밍의 방지(Reduction of slamming), 항행 중 발생하는 굽힘모멘트의 저감(Reduction of bending moment of the ship) 및 전단력의 상쇄(Relieve the shear force of the ships) 등이 있다.On the other hand, most ships use ballast water for stable operation in empty cargo conditions. The role of ballast water is to maintain stability of the ship, trim and heel control, secure immersion depth of the propeller, and proper draft. Reduction of slamming through securing, Reduction of bending moment of the ship, and Relieve the shear force of the ships.

선박에서 사용되는 평형수의 양은 선종별로 상이하나 일반적으로 DWT(Dead Weight)의 30%에서 40% 정도이며, 여객선은 컨테이너선, 벌크선 등 화물선 대비 10% 정도의 평형수를 추가 운용하는 것으로 알려져 있다.Although the amount of ballast water used in ships varies by ship type, it is generally about 30% to 40% of DWT (dead weight), and passenger ships are known to additionally operate about 10% of ballast water compared to cargo ships such as container ships and bulk carriers. have.

평형수에 포함된 해양 미생물의 장거리 이동에 따른 해양환경 파괴로 2017년 9월부터 선박 평형수협약(The measures of the Ballast Water Management (BWM) Convention)이 발효되어 모든 선박의 평형수는 배출전 미생물의 살처분과 확인 과정이 요구되고 있어, 이에 따른 평형수 처리장치의 설치, 운용 비용 증가, 항구에서의 선박 평형수 검사에 따른 정박 기간 증가 등의 문제가 대두되고 있다.Due to the destruction of the marine environment due to the long-distance movement of marine microorganisms contained in ballast water, the measures of the Ballast Water Management (BWM) Convention came into effect in September 2017, and all ships' ballast water is microbes before discharge. As a process of killing and confirming is required, problems such as installation of a ballast water treatment device, an increase in operating costs, and an increase in anchoring period due to the inspection of ballast water at the port are emerging.

주요선진국에서는 평형수 문제를 해결하기 위해 평형수를 활용하지 않거나 사용량을 최소화하는 선박 개념에 대한 연구를 진행 중에 있다. 일례로 미국 미시간 대학에서는 선체 내부에 트렁크라고 하는 선체 관통형 홀을 뚫는 방식의 무평형수 선박 개념을 제시한 바 있으며, 일본에서는 선체 측면의 곡률(bilge radius)을 키워 프로펠러 침수 깊이를 확보한 무평형수 선형(NOBS, Non-ballast water ship)과 최소평형수 선형(MIBS, minimal ballast water ship) 을 갖는 선박 개념을 발표한 바 있다. 한국에서는 화물창 하부의 선저면을 선수 선미부와 다르게 배치하는 Uneven baseline 개념의 무평형수 및 최소평형수 선형 개념을 제시한 바 있다.Major advanced countries are conducting research on the concept of ships that do not use ballast water or minimize the use of ballast water to solve the ballast water problem. For example, the University of Michigan in the U.S. proposed the concept of a ballast water vessel in which a through-body hole called a trunk is drilled inside the hull, and in Japan, the propeller immersion depth was secured by increasing the bilge radius of the hull side. The concept of ships with a ballast water ship (NOBS) and a minimal ballast water ship (MIBS) has been presented. In Korea, the uneven baseline concept, which arranges the bottom of the lower part of the cargo hold differently from the fore and aft, has proposed the uneven baseline concept and the minimum ballast water linear concept.

무평형수 선박, 최소평형수 선박의 구현과 상용화를 위해서는 평형수를 사용하지 않으면서도 선박 운항을 위해 요구되는 (1)화물 적재에 따른 자세 제어 능력의 유지, (2)적정 추진기 침수 깊이의 확보, (3)적정수진의 저항추진 성능 확보, (4)운항 중 선수 슬래밍에 대한 대책 확보, (5)운항 중 선체가 부담하는 하중에 대한 대책 확보, (6)기존 항만에서의 운용성 확보, (7)용이한 기술적 구현성 확보, (8)수명주기 경제성 확보가 반드시 요구되고 있는 실정이다.For the realization and commercialization of ballast water and minimum ballast water ships, (1) maintenance of attitude control capability required for ship operation without using ballast water, and (2) securing proper propeller immersion depth , (3) Securing resistance propulsion performance of proper water, (4) Securing countermeasures against bow slamming during flight, (5) Securing countermeasures against loads borne by the hull during flight, (6) Securing operability in existing ports (7) Securing easy technical realization and (8) Securing life cycle economics are indispensable.

본 발명은 상술된 문제점을 해결하기 위해 도출된 것으로서, 천연가스하이드레이트에서 천연가스를 추출한 후 이를 최소평형수 선형 선박의 듀얼퓨얼 엔진의 연료로써 활용할 수 있는 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템을 제공하고자 한다.The present invention was derived to solve the above-described problem, and after extracting natural gas from natural gas hydrate, it is possible to use natural gas hydrate that can be utilized as a fuel for a dual fuel engine of a minimum ballast water vessel. It is intended to provide a system capable of supplying fuel, replacing ballast water and supplying fresh water.

또한 본 발명은 천연가스 추출 후 잔류하는 청수를 정류하여 이를 기항지 등에서 재활용할 수 있는 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템을 제공하고자 한다.In addition, the present invention is to provide a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that can be recycled at a port of call by rectifying fresh water remaining after natural gas extraction.

또한 본 발명은 천연가스와 수소의 혼소(mixed combustion)를 통해 그린하우스가스 저감을 도모할 수 있는 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템을 제공하고자 한다.In addition, the present invention provides a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that can reduce green house gas through mixed combustion of natural gas and hydrogen. I want to.

또한 본 발명은 최소평형수 선박의 선형(hull-form)을 활용하여 요구되는 평형수를 LNG 및 선박연료유(HFO) 대신 천연가스하이드레이트의 큰 중량과 체적을 활용하여 대체하는 것을 기본으로 무평형수 운항이 가능하도록 하는 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템을 제공하고자 한다.In addition, the present invention is based on replacing the required ballast water using the large weight and volume of natural gas hydrate instead of LNG and ship fuel oil (HFO) by utilizing the hull-form of the minimum ballast water vessel. It is intended to provide a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that enables water navigation.

또한 본 발명은 천연가스하이드레이트 탱크컨테이너는 선박에 고정식 또는 탱크컨테이너 형태로 적재될 수 있으며, 천연가스하이드레이트를 운송하는 선박의 경우 별도의 LNG, HFO 벙커링 작업 없이 천연가스하이드레이트를 적재할 수 있는 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템을 제공하고자 한다.In addition, according to the present invention, the natural gas hydrate tank container can be loaded on a ship in the form of a fixed or tank container, and in the case of a ship that transports natural gas hydrate, natural gas that can load natural gas hydrate without separate LNG or HFO bunkering work. It is intended to provide a system capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using hydrate.

또한 본 발명은 평형수가 필요없는 만재 상태의 운항의 경우 듀얼퓨얼 엔진을 활용하여 기존의 LNG, HFO를 선박 연료로 활용하여 화물 적재량을 최대화할 수 있도록 하는 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템을 제공하고자 한다.In addition, the present invention uses a dual fuel engine to maximize the cargo load by utilizing existing LNG and HFO as ship fuel in the case of a full operation without ballast water. It is intended to provide a system capable of supplying fuel, replacing ballast water and supplying fresh water.

또한 본 발명은 천연가스하이드레이트와 수소를 탱크컨테이너에 적재하여 선박에 탑재한 후 적재된 탱크컨테이너로부터 천연가스와 수소를 추출 및 혼합하여 선박의 연료로 공급하는 시스템을 제공하고자 한다.In addition, the present invention is to provide a system in which natural gas hydrate and hydrogen are loaded in a tank container and mounted on a ship, and then natural gas and hydrogen are extracted and mixed from the loaded tank container and supplied as fuel for the ship.

본 발명의 일 실시예에 따른 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템은 최소평형수 선박의 연료공급계통에 연결된 하나 이상의 천연가스하이드레이트 탱크컨테이너가 적층된 천연가스하이드레이트 탱크컨테이너 스택, 상기 천연가스하이드레이트 탱크컨테이너 스택으로부터 추출되는 천연가스의 압력을 일정하게 유지하는 천연가스 레귤레이터, 상기 천연가스의 추출 중 배관의 손상이나 관막힘 방지를 위해 상기 천연가스의 온도를 조절하는 열교환기, 상기 열교환기와 연결되며, 상기 열교환기를 통해 배출되는 천연가스의 유량을 계측하는 연료 유량계, 상기 최소평형수 선박 내 엔진의 연료 흡입부와 연결된 연료 공급관 및 상기 연료 공급관을 통해 흡입된 공기와 상기 열교환기를 통해 흡입되는 천연가스 간의 혼합비를 제어하는 연료 유량 조절밸브를 포함할 수 있다.In a system capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to an embodiment of the present invention, one or more natural gas hydrate tank containers connected to the fuel supply system of the minimum ballast water vessel Stacked natural gas hydrate tank container stack, a natural gas regulator that maintains a constant pressure of natural gas extracted from the natural gas hydrate tank container stack, and the natural gas to prevent pipe damage or clogging during extraction of the natural gas A heat exchanger for controlling the temperature of, a fuel flow meter connected to the heat exchanger and measuring a flow rate of natural gas discharged through the heat exchanger, a fuel supply pipe and the fuel supply pipe connected to the fuel intake part of the engine in the minimum ballast water vessel It may include a fuel flow control valve for controlling a mixing ratio between the air sucked through and the natural gas sucked through the heat exchanger.

일 실시예에서, 상기 천연가스하이드레이트 탱크컨테이너 스택은 상기 엔진으로부터 배출되는 배기가스(exhaust gas) 또는 냉각수(coolant)의 열을 이용하여 고체상태의 천연가스하이드레이트의 상평형 상태를 조정하여 상기 천연가스를 재기화시키는 것을 특징으로 할 수 있다.In one embodiment, the natural gas hydrate tank container stack uses the heat of exhaust gas or coolant discharged from the engine to adjust the phase equilibrium state of the natural gas hydrate in a solid state. It may be characterized by regasifying.

일 실시예에서, 상기 천연가스 레귤레이터는 상기 하나 이상의 천연가스하이드레이트 탱크컨테이너 각각으로부터 배출되는 천연가스의 압력을 취합하여 일정한 천연가스 공급 압력이 유지되도록 하는 것을 특징으로 할 수 있다.In one embodiment, the natural gas regulator may be characterized in that a constant natural gas supply pressure is maintained by collecting pressures of natural gas discharged from each of the one or more natural gas hydrate tank containers.

일 실시예에서, 본 발명은 상기 천연가스 레귤레이터와 상기 열교환기 사이에 위치하며 상기 천연가스 레귤레이터로부터 배출되는 천연가스의 배출 상태를 조절하는 천연가스 조절밸브를 더 포함할 수 있다.In one embodiment, the present invention may further include a natural gas control valve positioned between the natural gas regulator and the heat exchanger and controlling a state of discharge of natural gas discharged from the natural gas regulator.

일 실시예에서, 상기 열교환기는 상기 천연가스 조절밸브를 통해 배출되는 천연가스의 추출 중 배관의 손상이나 관막힘 방지를 위하여 열교환을 수행하는 것을 특징으로 할 수 있다.In one embodiment, the heat exchanger may be characterized in that it performs heat exchange to prevent damage or clogging of a pipe during extraction of natural gas discharged through the natural gas control valve.

일 실시예에서, 상기 연료 공급관은 스로틀 바디를 포함하며, 상기 스로틀 바디를 통해 흡입된 공기량은 상기 연료 유량 조절밸브에 전달되는 것을 특징으로 할 수 있다.In one embodiment, the fuel supply pipe may include a throttle body, and an amount of air sucked through the throttle body may be transmitted to the fuel flow control valve.

일 실시예에서, 상기 스로틀 바디는 상기 연료 공급관을 통해 흡입되는 공기량을 조절하는 스로틀 밸브를 포함하는 것을 특징으로 할 수 있다.In one embodiment, the throttle body may include a throttle valve that adjusts an amount of air sucked through the fuel supply pipe.

일 실시예에서, 상기 천연가스하이드레이트 탱크컨테이너 스택은 상기 최소평형수 선박에 적재된 하나 이상의 컨테이너의 무게 배분에 따라 선박 상에서 배치상태가 변경되도록 마련되며, 상기 최소평형수 선박의 평형수를 대신하여 상기 천연가스하이드레이트 탱크컨테이터 스택에 의해 상기 최소평형수 선박의 종횡경사가 조정되고 적정 흘수(draft)가 확보되는 것을 특징으로 할 수 있다.In one embodiment, the natural gas hydrate tank container stack is provided to change the arrangement state on the ship according to the weight distribution of one or more containers loaded on the minimum ballast water vessel, instead of the ballast water of the minimum ballast water vessel It may be characterized in that the vertical and horizontal slope of the minimum ballast water vessel is adjusted by the natural gas hydrate tank container stack, and an appropriate draft is secured.

일 실시예에서, 상기 천연가스하이드레이트 탱크컨테이너 스택과 상기 연료 공급관 사이에는 상기 천연가스하이드레이트 탱크컨테이너의 폭발을 방지하기 위한 비상차단밸브(Quick Closing Valve), 회생 압력 밸브(Flashback Pressure Valve) 및 기폭 방지기(Detonation Arrester) 중 어느 하나 이상이 마련되는 것을 특징으로 할 수 있다.In one embodiment, between the natural gas hydrate tank container stack and the fuel supply pipe, an emergency shut-off valve for preventing explosion of the natural gas hydrate tank container, a flashback pressure valve, and an explosion preventer It may be characterized in that any one or more of (Detonation Arrester) is provided.

본 발명의 다른 실시예에 따른 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템은 선박의 연료공급계통에 연결된 하나 이상의 천연가스하이드레이트 탱크컨테이너 및 하나 이상의 수소탱크가 적층된 천연가스하이드레이트 탱크컨테이너 스택, 상기 천연가스하이드레이트 탱크컨테이너 스택으로부터 배출되는 천연가스의 압력을 조절하는 천연가스 레귤레이터, 상기 수소탱크로부터 배출되는 수소의 압력을 조절하는 수소 레귤레이터, 상기 천연가스 조절밸브를 통해 배출되는 천연가스의 온도를 조절하는 열교환기, 상기 열교환기와 연결되며, 상기 열교환기를 통해 배출되는 천연가스의 유량을 계측하는 연료 유량계, 상기 수소 레귤레이터와 연결되며, 상기 수소 레귤레이터로부터 배출되는 수소의 유량을 계측하는 수소 유량계, 선박 내 엔진의 연료 흡입부와 연결된 연료 공급관 및 상기 연료 공급관을 통해 흡입된 공기와 상기 열교환기를 통해 배출되는 천연가스 간의 혼합비를 제어하는 연료 유량 조절밸브를 포함하며, 상기 천연가스하이드레이트 탱크컨테이너 스택에서 상기 천연가스 추출 후 잔류하는 청수를 상기 최소평형수 선박의 평형수로 대체하여 적용하며, 기항지에서 상기 청수를 취합하여 재활용할 수 있도록 상기 청수를 공급하는 것을 특징으로 할 수 있다.The system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship using natural gas hydrate according to another embodiment of the present invention includes at least one natural gas hydrate tank container and at least one hydrogen connected to the fuel supply system of the ship. A natural gas hydrate tank container stack in which tanks are stacked, a natural gas regulator controlling the pressure of natural gas discharged from the natural gas hydrate tank container stack, a hydrogen regulator controlling the pressure of hydrogen discharged from the hydrogen tank, the natural gas A heat exchanger controlling the temperature of natural gas discharged through a control valve, a fuel flow meter connected to the heat exchanger and measuring the flow rate of natural gas discharged through the heat exchanger, and connected to the hydrogen regulator, and discharged from the hydrogen regulator A hydrogen flow meter that measures the flow rate of hydrogen, a fuel supply pipe connected to the fuel intake part of the engine in the ship, and a fuel flow control valve that controls a mixing ratio between the air sucked through the fuel supply pipe and the natural gas discharged through the heat exchanger. The fresh water remaining after the natural gas extraction in the natural gas hydrate tank container stack is applied by replacing it with the ballast water of the minimum ballast water vessel, and supplying the fresh water so that the fresh water can be collected and recycled at the port of call. It can be characterized.

본 발명의 일 측면에 따르면, 천연가스하이드레이트에서 천연가스를 추출한 후 이를 최소평형수 선형 선박의 듀얼퓨얼 엔진의 연료로써 활용할 수 있는 이점을 가진다.According to an aspect of the present invention, after natural gas is extracted from natural gas hydrate, it has the advantage of utilizing it as fuel for a dual fuel engine of a minimum ballast water linear ship.

또한 본 발명의 일 측면에 따르면, 천연가스 추출 후 잔류하는 청수를 기항지 등에서 취합, 처리하여 재활용할 수 있는 이점을 가진다.In addition, according to an aspect of the present invention, it has the advantage of being able to recycle by collecting and treating fresh water remaining after natural gas extraction at a port of call.

또한 본 발명의 일 측면에 따르면, 천연가스와 수소의 혼소(mixed firing)를 통해 그린하우스가스 저감을 도모할 수 있는 이점을 가진다.In addition, according to an aspect of the present invention, it has the advantage of being able to reduce green house gas through mixed firing of natural gas and hydrogen.

또한 본 발명의 일 측면에 따르면, 최소평형수 선박의 선형(hull-form)을 활용하여 요구되는 평형수를 LNG 및 선박연료유(HFO) 대신 천연가스하이드레이트의 큰 중량과 체적을 활용하여 대체하는 것을 기본으로 무평형수 운항이 가능하도록 하는 이점을 가진다.In addition, according to an aspect of the present invention, the ballast water required by utilizing the hull-form of the minimum ballast water vessel is replaced by using a large weight and volume of natural gas hydrate instead of LNG and ship fuel oil (HFO). It has the advantage of making it possible to operate in ballast water.

또한 본 발명의 일 측면에 따르면, 천연가스하이드레이트 탱크컨테이너는 선박에 고정식 또는 탱크컨테이너 형태로 적재될 수 있으며, 천연가스하이드레이트를 운송하는 선박의 경우 별도의 LNG, HFO 벙커링 작업 없이 천연가스하이드레이트를 적재하는 과정만으로 선박에 연료를 공급할 수 있는 이점을 가진다.In addition, according to an aspect of the present invention, the natural gas hydrate tank container can be loaded on a ship in a fixed or tank container form, and in the case of a ship that transports natural gas hydrate, a natural gas hydrate is loaded without separate LNG or HFO bunkering work. It has the advantage of supplying fuel to ships only by doing so.

또한 본 발명의 일 측면에 따르면, 평형수가 필요없는 만재 상태의 운항의 경우 듀얼퓨얼 엔진을 활용하여 기존의 LNG, HFO를 선박 연료로 활용하여 화물 적재량을 최대화할 수 있는 이점을 가진다.In addition, according to an aspect of the present invention, in the case of a full operation without the need for ballast water, it has the advantage of maximizing the cargo loading capacity by utilizing the existing LNG and HFO as ship fuel by utilizing a dual fuel engine.

또한 본 발명의 일 측면에 따르면, 천연가스하이드레이트 탱크컨테이너는 각기 무게가 다른 컨테이너를 적재하여 선박의 종방향 기울기(trim), 횡방향 기울기(heel)가 수평이 유지되지 않을 경우 선박의 종횡방향 평형을 맞추어주는 역할을 할 수 있는 이점을 가진다.In addition, according to an aspect of the present invention, when the natural gas hydrate tank container is loaded with containers of different weights and the vertical and horizontal slopes of the vessel are not maintained horizontally, the vertical and horizontal equilibrium of the vessel It has the advantage of being able to play a role in matching.

또한 본 발명의 일 측면에 따르면, 천연가스하이드레이트로부터 가스를 재기화하고 남게되는 체적의 80%에 이르는 담수(청수)를 기항지에서 취합하여 활용할 수 있도록 함으로서 물부족 지역의 담수화플랜트 소요를 일정부분 대체할 수 있는 이점을 가진다.In addition, according to an aspect of the present invention, by regasifying gas from natural gas hydrate and allowing fresh water (fresh water) up to 80% of the remaining volume to be collected and utilized at the port of call, a certain part of the desalination plant requirement in the water shortage area is replaced. You have the advantage to do it.

도 1은 본 발명의 일 실시예에 따른 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템(100)의 구성을 도시한 도면이다.1 is a view showing the configuration of a system 100 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to an embodiment of the present invention.

도 2는 본 발명의 다른 실시예에 따른 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템(200)의 구성을 도시한 도면이다.2 is a diagram showing the configuration of a system 200 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to another embodiment of the present invention.

도 3은 최소평형수 선형이 적용된 선박에 도 1 또는 도 2에 도시된 천연가스하이드레이트 탱크컨테이너 스택(110, 210)이 다수의 컨테이너와 함께 배치된 상태를 도시한 도면이다.3 is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are disposed together with a plurality of containers in a ship to which the minimum ballast water is applied.

도 4는 최소평형수 선형이 적용된 선박의 힐(heel) 및 트림(trim) 조정을 위해 도 1 또는 도 2에 도시된 천연가스하이드레이트 탱크컨테이너 스택(110, 210)을 배치한 상태를 도시한 도면이다.4 is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are arranged to adjust the heel and trim of the ship to which the minimum ballast water alignment is applied to be.

도 5는 도 1 또는 도 2에 도시된 천연가스하이드레이트 탱크컨테이너 스택(110, 210) 내 청수를 육상으로 전달 후, 육상에서 이를 정류하는 과정을 도시한 도면이다.5 is a view showing a process of rectifying the fresh water in the natural gas hydrate tank container stacks 110 and 210 shown in FIG.

도 6은 도 1에 도시된 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템(100)을 통해 듀얼퓨얼 엔진에 천연가스하이드레이트 연료를 공급하는 과정을 일련의 순서대로 도시한 순서도이다.FIG. 6 is a series of processes of supplying natural gas hydrate fuel to a dual fuel engine through a system 100 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using the natural gas hydrate shown in FIG. 1 It is a flow chart showing the order of.

도 7은 도 2에 도시된 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템(200)을 통해 듀얼퓨얼 엔진에 천연가스하이드레이트 연료를 공급하는 과정을 일련의 순서대로 도시한 순서도이다.FIG. 7 is a series of processes of supplying natural gas hydrate fuel to a dual fuel engine through a system 200 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using the natural gas hydrate shown in FIG. 2 It is a flow chart showing the order of.

<부호의 설명><Explanation of code>

100: 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템100: A system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship using natural gas hydrate

110: 천연가스하이드레이트 탱크컨테이너 스택110: natural gas hydrate tank container stack

110a: 천연가스하이드레이트 탱크컨테이너110a: natural gas hydrate tank container

120: 천연가스 레귤레이터120: natural gas regulator

130: 천연가스 조절밸브130: natural gas control valve

140: 열교환기140: heat exchanger

150: 연료 유량계150: fuel flow meter

160: 연료 유량 조절밸브160: fuel flow control valve

200: 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템200: A system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship using natural gas hydrate

210: 천연가스하이드레이트 탱크컨테이너 스택210: natural gas hydrate tank container stack

210a: 천연가스하이드레이트 탱크컨테이너210a: natural gas hydrate tank container

210b: 수소탱크210b: hydrogen tank

220: 천연가스 레귤레이터220: natural gas regulator

230: 수소 레귤레이터230: hydrogen regulator

240: 천연가스 조절밸브240: natural gas control valve

250: 열교환기250: heat exchanger

260: 연료 유량계260: fuel flow meter

270: 수소 유량계270: hydrogen flow meter

280: 연료 유량 조절밸브280: fuel flow control valve

300: 엔진300: engine

310: 연료 공급관310: fuel supply pipe

320: 스로틀 바디320: throttle body

이하, 본 발명의 이해를 돕기 위하여 바람직한 실시예를 제시한다. 그러나 하기의 실시예는 본 발명을 보다 쉽게 이해하기 위하여 제공되는 것일 뿐, 실시예에 의해 본 발명의 내용이 한정되는 것은 아니다.Hereinafter, a preferred embodiment is presented to aid the understanding of the present invention. However, the following examples are provided for easier understanding of the present invention, and the contents of the present invention are not limited by the examples.

도 1은 본 발명의 일 실시예에 따른 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템(100)의 구성을 도시한 도면이다.1 is a view showing the configuration of a system 100 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to an embodiment of the present invention.

도 1을 살펴보면, 본 발명의 일 실시예에 따른 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템(100)은 크게 천연가스하이드레이트 탱크컨테이너 스택(110), 천연가스 레귤레이터(120), 천연가스 조절밸브(130), 열교환기(140), 연료 유량계(150), 연료 유량 조절밸브(160)를 포함하여 구성될 수 있다.Referring to FIG. 1, a system 100 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using natural gas hydrate according to an embodiment of the present invention is largely a natural gas hydrate tank container stack 110 , A natural gas regulator 120, a natural gas control valve 130, a heat exchanger 140, a fuel flow meter 150, and a fuel flow control valve 160.

천연가스하이드레이트 탱크컨테이너 스택(110)은 하나 이상의 천연가스하이드레이트 탱크컨테이너가 적층된 천연가스하이드레이트 탱크컨테이너를 의미한다. 이때, 각각의 천연가스하이드레이트 탱크컨테이너(110a) 내 천연가스하이드레이트는 얼음형태의 고체상태이기 때문에, 선박의 엔진(300)으로부터 배출되는 배기가스(exhaust gas) 또는 냉각수(coolant)의 열을 이용하거나 감압하여 고체상태의 천연가스하이드레이트로부터 천연가스를 추출하게 된다.The natural gas hydrate tank container stack 110 refers to a natural gas hydrate tank container in which one or more natural gas hydrate tank containers are stacked. At this time, since the natural gas hydrate in each natural gas hydrate tank container 110a is in an ice-like solid state, the heat of exhaust gas or coolant discharged from the engine 300 of the ship is used, or Under reduced pressure, natural gas is extracted from solid natural gas hydrate.

추출된 천연가스는 배관을 통해 천연가스 레귤레이터(120)로 공급된다.The extracted natural gas is supplied to the natural gas regulator 120 through a pipe.

천연가스 레귤레이터(120)는 각각의 천연가스하이드레이트 탱크컨테이너(110a)로부터 배출되는 천연가스의 압력이 일정하게 유지되도록 한다. 천연가스 레귤레이터(120)에 의해 배출압이 일정해진 천연가스는 천연가스 조절밸브(130)를 통해 열교환기(140)로 전달된다.The natural gas regulator 120 maintains a constant pressure of natural gas discharged from each natural gas hydrate tank container 110a. The natural gas whose discharge pressure is constant by the natural gas regulator 120 is delivered to the heat exchanger 140 through the natural gas control valve 130.

여기에서, 천연가스 조절밸브(130)는 천연가스 레귤레이터(120)와 열교환기(140) 사이에 위치하며, 천연가스 레귤레이터(120)로부터 배출되는 천연가스의 배출 상태를 조절하는 역할을 한다.Here, the natural gas control valve 130 is located between the natural gas regulator 120 and the heat exchanger 140 and serves to adjust the state of the natural gas discharged from the natural gas regulator 120.

열교환기(140)는 천연가스 조절밸브(130)를 통해 배출되는 천연가스의 온도를 조절하는 역할을 한다.The heat exchanger 140 controls the temperature of natural gas discharged through the natural gas control valve 130.

보다 구체적으로, 배출관 내 천연가스는 너무 낮은 온도가 될 경우 하이드레이트 상태가 되어 관 막힘이 발생할 수 있기 때문에, 열교환기(140)는 천연가스 조절밸브(130)를 통해 배출되는 천연가스에 의해 배출관이 파손되거나 막히지 않도록 하는 역할을 하게 된다.More specifically, when the natural gas in the discharge pipe becomes too low, the discharge pipe may become hydrated and cause pipe blockage, so that the heat exchanger 140 is discharged by the natural gas discharged through the natural gas control valve 130. It plays a role in preventing it from being damaged or blocked.

열교환기(140)를 통한 천연가스는 연료 유량계(150)를 통해 유량이 조절된 후, 연료 유량 조절밸브(160)를 통해 공기와 천연가스의 혼합비가 일정하게 조절된다.After the flow rate of natural gas through the heat exchanger 140 is adjusted through the fuel flow meter 150, the mixing ratio of air and natural gas is constantly adjusted through the fuel flow control valve 160.

여기에서, 연료 유량 조절밸브(160)는 엔진(300)의 연료 흡입부와 연결된 연료 공급관(310)을 통해 흡입된 공기와 열교환기(140)를 통해 배출되는 천연가스 간의 혼합비가 일정하게 유지되도록 하며 또한 유량을 검사하게 된다. 여기에서, 엔진(300)은 듀얼퓨얼 엔진을 의미할 수 있다.Here, the fuel flow control valve 160 is such that the mixing ratio between the air sucked through the fuel supply pipe 310 connected to the fuel intake of the engine 300 and the natural gas discharged through the heat exchanger 140 is kept constant. And also check the flow rate. Here, the engine 300 may mean a dual fuel engine.

한편, 연료 공급관(310)은 스로틀 바디(320)를 포함하며, 스로틀 바디(320)에 포함된 스로틀 밸브를 통해 연료 공급관(310)으로 흡입되는 공기의 흡입량이 조절될 수 있다. 또한, 스로틀 밸브를 통해 흡입된 공기의 공기량은 연료 유량 조절 밸브(160)에 전해지면서 연료 유량 조절밸브(160)에서 공기와 천연가스의 정확한 혼합비를 조절하는데 적용될 수 있다.Meanwhile, the fuel supply pipe 310 includes a throttle body 320, and an amount of air sucked into the fuel supply pipe 310 through a throttle valve included in the throttle body 320 may be adjusted. In addition, the amount of air inhaled through the throttle valve may be applied to the fuel flow control valve 160 to control the exact mixing ratio of air and natural gas while being transmitted to the fuel flow control valve 160.

한편, 천연가스하이드레이트 탱크컨테이너 스택(110)은 체적의 80%를 차지하는 청수(담수)에 의해 상당한 무게를 가지게 되는데, 본 발명에서는 이를 이용하여 천연가스하이드레이트 탱크컨테이너 스택(110)이 선박에 적재된 하나 이상의 컨테이너의 무게를 활용해 선박의 평형수를 대신하여 선박의 종횡방향 자세를 제어할 수 있다. 이에 관해서는 도 3 및 도 4를 통해 후술하기로 한다.On the other hand, the natural gas hydrate tank container stack 110 has a considerable weight by fresh water (fresh water) occupying 80% of the volume, and in the present invention, the natural gas hydrate tank container stack 110 is loaded on the ship. By using the weight of one or more containers, it is possible to control the longitudinal and transverse attitude of the ship in place of the ballast water of the ship. This will be described later with reference to FIGS. 3 and 4.

또한, 일 실시예에서 도면에는 도시되지 않았지만, 천연가스하이드레이트 탱크컨테이너 스택(110)과 연료 공급관(310) 사이에는 천연가스하이드레이트 탱크컨테이너(110a)의 폭발을 방지하기 위하여 비상차단밸브(Quick Closing Valve), 회생 압력 밸브(Flashback Pressure Valve) 및 기폭 방지기(Detonation Arrester) 등이 마련될 수 있다.In addition, although not shown in the drawing in one embodiment, in order to prevent the explosion of the natural gas hydrate tank container (110a) between the natural gas hydrate tank container stack 110 and the fuel supply pipe 310, an emergency shutoff valve (Quick Closing Valve). ), a flashback pressure valve, and a detonation arrester may be provided.

한편, 도 1에서는 엔진(300)에 천연가스와 공기를 혼합하여 공급할 수 있는 연료공급 시스템에 대해 살펴보았다면, 도 2를 통해서는 엔진(300)에 천연가스, 수소 및 공기를 혼합하여 공급함으로써, 그린하우스가스(GHG, Green House Gas)를 저감할 수 있는 연료공급 시스템에 대해 살펴보기로 한다.Meanwhile, in FIG. 1, if a fuel supply system capable of mixing and supplying natural gas and air to the engine 300 has been described, through FIG. 2, natural gas, hydrogen and air are mixed and supplied to the engine 300. , Let's look at a fuel supply system that can reduce green house gas (GHG).

도 2는 본 발명의 다른 실시예에 따른 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템(200)의 구성을 도시한 도면이다.2 is a diagram showing the configuration of a system 200 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to another embodiment of the present invention.

도 2를 살펴보면, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템(200)은 도 1에 도시된 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템(100)과 대부분 유사한 구성을 가지되, 천연가스하이드레이트 탱크컨테이너 스택(210), 수소탱크(210b), 수소 레귤레이터(230), 수소 유량계(270)에서 차이를 보인다. 따라서, 도 2에서는 천연가스하이드레이트 탱크컨테이너 스택(210), 수소탱크(210b), 수소 레귤레이터(230), 수소 유량계(270)에 대해서만 설명하고 나머지 구성에 대해서는 생략하기로 한다.Referring to FIG. 2, a system 200 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using natural gas hydrate, supplies fuel in a minimum ballast water vessel using the natural gas hydrate shown in FIG. Has a configuration similar to the system 100, which can substitute ballast water and supply fresh water, but differs in the natural gas hydrate tank container stack 210, the hydrogen tank 210b, the hydrogen regulator 230, and the hydrogen flow meter 270 Looks. Accordingly, in FIG. 2, only the natural gas hydrate tank container stack 210, the hydrogen tank 210b, the hydrogen regulator 230, and the hydrogen flow meter 270 will be described, and the remaining configurations will be omitted.

도 2에서의 천연가스하이드레이트 탱크컨테이너 스택(210)은 도 1에서의 천연가스하이드레이트 탱크컨테이너 스택(110)과는 달리, 천연가스하이드레이트 탱크컨테이너(210a)와 수소탱크(210b)를 포함한다.Unlike the natural gas hydrate tank container stack 110 in FIG. 1, the natural gas hydrate tank container stack 210 in FIG. 2 includes a natural gas hydrate tank container 210a and a hydrogen tank 210b.

즉, 일부 천연가스하이드레이트 탱크컨테이너(210a)를 수소탱크(210b)가 대체하는 것이다.That is, the hydrogen tank 210b replaces some natural gas hydrate tank containers 210a.

따라서, 천연가스하이드레이트 탱크컨테이너 스택(210)에서는 천연가스와 수소를 모두 공급할 수 있게 된다.Accordingly, both natural gas and hydrogen can be supplied from the natural gas hydrate tank container stack 210.

이때, 천연가스는 천연가스 레귤레이터(220), 천연가스 조절밸브(240), 열교환기(250), 연료 유량계(260), 연료 유량 조절밸브(280)를 통해 엔진(300)의 연료 공급관(310)으로 공급되지만, 수소는 수소 레귤레이터(230) 및 수소 유량계(270)를 통해 연료 공급관(310)으로 공급된다.At this time, the natural gas is a fuel supply pipe 310 of the engine 300 through a natural gas regulator 220, a natural gas control valve 240, a heat exchanger 250, a fuel flow meter 260, and a fuel flow control valve 280. ), but hydrogen is supplied to the fuel supply pipe 310 through the hydrogen regulator 230 and the hydrogen flow meter 270.

수소 레귤레이터(230)는 천연가스 레귤레이터(220)와 마찬가지로, 각각의 수소탱크(210b)로부터 배출되는 수소들의 서로 상이한 배출압을 취합하여, 일정한 배출압이 유지되도록 한다. 수소 레귤레이터(230)에 의해 배출압이 일정해진 수소는 수소 유량계(270)로 전달된다. 수소 유량계(270)는 수소의 유량을 계측하는 역할을 하며, 수소 유량계(270)를 통한 수소는 연료 공급관(310)으로 전달되어 공기와 함께 흡입된다.Like the natural gas regulator 220, the hydrogen regulator 230 collects different discharge pressures of hydrogens discharged from each of the hydrogen tanks 210b so that a constant discharge pressure is maintained. Hydrogen whose discharge pressure is constant by the hydrogen regulator 230 is transferred to the hydrogen flow meter 270. The hydrogen flow meter 270 serves to measure the flow rate of hydrogen, and the hydrogen through the hydrogen flow meter 270 is transferred to the fuel supply pipe 310 and sucked together with air.

엔진(300)에 천연가스 및 공기가 흡입되어 폭발행정이 발생될 경우에는 다량의 이산화탄소가 발생될 수 있기 때문에, 본 발명에서는 이산화탄소 저감을 목적으로 하여 천연가스 및 공기에 수소를 함께 공급하여 연소하게 된다.When natural gas and air are sucked into the engine 300 and an explosion stroke occurs, a large amount of carbon dioxide may be generated. Therefore, in the present invention, for the purpose of reducing carbon dioxide, hydrogen is supplied to natural gas and air for combustion. do.

다음으로는, 도 1 또는 도 2에 도시된 천연가스하이드레이트 탱크컨테이너 스택(110, 210)이 최소평형수 선형을 가진 선박에 적용 및 배치된 상태를 살펴보기로 한다.Next, a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are applied and disposed in a ship having a minimum ballast alignment will be described.

도 3은 최소평형수 선형이 적용된 선박에 도 1 또는 도 2에 도시된 천연가스하이드레이트 탱크컨테이너 스택(110, 210)이 다수의 컨테이너와 함께 배치된 상태를 도시한 도면이고, 도 4는 최소평형수 선형이 적용된 선박의 힐(heel) 및 트림(trim) 조정을 위해 도 1 또는 도 2에 도시된 천연가스하이드레이트 탱크컨테이너 스택(110, 210)을 배치한 상태를 도시한 도면이다.3 is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are disposed together with a plurality of containers on a ship to which the minimum ballast water is applied, and FIG. 4 is a minimum balance It is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are arranged to adjust the heel and trim of the ship to which the vertical alignment is applied.

먼저, 도 3을 살펴보면 도 3의 선박은 최소평형수 선형이 적용된 선박에 천연가스하이드레이트 혹은 천연가스하이드레이트와 수소가 충전된 천연가스하이드레이트 탱크컨테이너 스택(110, 210)이 다수의 컨테이너 박스들과 함께 적재된 상태를 나타낸다.First, looking at FIG. 3, the ship of FIG. 3 includes natural gas hydrate or natural gas hydrate and hydrogen-filled natural gas hydrate tank container stacks 110 and 210 together with a plurality of container boxes. Indicates the loaded state.

도 3을 살펴보면, 각각의 컨테이너 박스들은 내용물에 따라 모두 무게가 다르기 때문에, 선박 전체를 놓고 봤을때 선박의 무게중심은 일정하지 않고 컨테이너들의 무게에 따라 한쪽으로 치우치게 된다.Referring to FIG. 3, since each container box has a different weight according to the contents, the center of gravity of the ship is not constant when viewed as a whole, but is biased to one side according to the weight of the containers.

따라서, 선박의 횡방향 기울기(heel)와 종방향 기울기(trim)이 수평이 되지 않을 경우, 천연가스 추출 후 남게 되는 체적의 80%에 달하는 청수가 가진 무게를 이용하여 선박의 이러한 무게 중심을 맞출 수 있게 된다.Therefore, if the horizontal heel and the vertical trim are not horizontal, the weight of the fresh water, which is 80% of the volume remaining after natural gas extraction, is used to match the center of gravity of the ship. You will be able to.

이를 위하여, 천연가스하이드레이트 탱크컨테이너 스택(110, 210)은 한 위치에 고정되도록 형성되는 것이 아니라, 선박에 적재되는 컨테이터 박스들의 무게 배분에 따라 얼마든지 그 위치가 이동될 수 있다.To this end, the natural gas hydrate tank container stacks 110 and 210 are not formed to be fixed in one position, but may be moved at any position according to the weight distribution of container boxes loaded on the ship.

특히, 본 발명은 최소평형수(MIBS) 선형이 적용된 최소평형수 선박을 이용할 경우 천연가스하이드레이트가 가지는 자체 중량을 평형수로 대체함으로써 무평형수(NOB) 운행이 가능하게 된다.In particular, in the present invention, when a minimum ballast water vessel to which a minimum ballast water (MIBS) line is applied is used, the weight of the natural gas hydrate is replaced with ballast water, thereby enabling the operation of a ballast water (NOB).

도 4를 살펴보면, 최소평형수 선형을 가진 선박의 횡방향 기울기 및 종방향 기울기 수평을 맞추기 위하여, 천연가스하이드레이트 탱크컨테이너 스택(110, 210)은 선박의 수평면을 기준으로 횡방향 및 종방향의 평형을 맞출 수 있도록 배치된다.Referring to FIG. 4, in order to align the lateral and longitudinal slopes of the ship with the minimum ballast line, the natural gas hydrate tank container stacks 110 and 210 are balanced in the lateral and longitudinal directions based on the horizontal plane of the ship. It is arranged to fit.

따라서, 다수의 컨테이너 별 무게가 상이하여 선박의 무게가 한쪽으로 치우치더라도, 천연가스하이드레이트 탱크컨테이너 스택(110, 210)의 배치를 달리함으로써 선박의 수평면을 기준으로 횡방향 및 종방향의 평형을 맞출 수 있게 된다.Therefore, even if the weight of the ship is skewed to one side due to the different weights of a number of containers, the horizontal and longitudinal balances based on the horizontal plane of the ship are adjusted by varying the arrangement of the natural gas hydrate tank container stacks (110, 210). You will be able to fit.

한편, 다음으로는 도 5를 통해 연가스하이드레이트 연료탱크 스택(110, 210) 내 청수를 육상으로 전달 후, 육상에서 이를 정류하는 과정을 살펴보기로 한다.On the other hand, next, the process of rectifying the fresh water in the flue gas hydrate fuel tank stacks 110 and 210 to the land through FIG. 5 will be described.

도 5는 도 1 또는 도 2에 도시된 천연가스하이드레이트 탱크컨테이너 스택(110, 210) 내 청수를 육상으로 전달 후, 육상에서 이를 정류하는 과정을 도시한 도면이다.5 is a view showing a process of rectifying the fresh water in the natural gas hydrate tank container stacks 110 and 210 shown in FIG.

도 5를 살펴보면, 천연가스하이드레이트 탱크컨테이너 스택(110, 210)에 남은 청수는 펌프를 통해 육상의 포집탱크로 공급되어 수거된다.Referring to FIG. 5, fresh water remaining in the natural gas hydrate tank container stacks 110 and 210 is supplied to a collection tank on land through a pump and collected.

이때, 육상에 설치되는 정수장치는 제1 펌프(a), 1차 청수 저장탱트(b), 필터장치(c), 2차 청수 저장탱크(d) 및 제2 펌프(e)로 구성될 수 있다.At this time, the water purification device installed on land may be composed of a first pump (a), a primary fresh water storage tank (b), a filter device (c), a secondary fresh water storage tank (d) and a second pump (e). .

제1 펌프(a)는 하나 이상의 천연가스하이드레이트 탱크로부터 청수를 배출시키는 역할을 하고, 배출된 청수는 1차 청수 저장탱크(b)에 우선 저장된다.The first pump (a) serves to discharge fresh water from one or more natural gas hydrate tanks, and the discharged fresh water is first stored in the primary fresh water storage tank (b).

이때, 1차 청수 저장탱크(b)에 저장된 청수에는 용존 천연가스 및 불순물, 이물질이 함유될 수 있으므로, 필터장치(c)를 통해 이를 정류하게 된다.At this time, since the fresh water stored in the primary fresh water storage tank (b) may contain dissolved natural gas, impurities, and foreign substances, it is rectified through the filter device (c).

이때, 필터장치(c)의 개수는 제한되지 않으며, 필터장치(c)의 개수가 많으면 많을수록 정류 효과가 극대화될 수 있다.In this case, the number of filter devices (c) is not limited, and as the number of filter devices (c) increases, the rectification effect may be maximized.

필터장치(c)를 통해 정류된 청수는 다시 2차 청수 저장탱크(d)에 저장된 후, 제2 펌프(e)를 통해 각 공급처로 공급될 수 있다.After the fresh water rectified through the filter device (c) is stored in the secondary fresh water storage tank (d) again, it may be supplied to each supply source through the second pump (e).

즉, 본 발명에 따르면 천연가스하이드레이트의 재기화 후 남는 청수를 기항지에서 취합한 후 공급처에서 이를 재활용할 수 있기 때문에, 물부족 지역의 담수화 플랜트를 대체할 수 있는 이점을 가질 수 있다.That is, according to the present invention, since the fresh water remaining after the regasification of natural gas hydrate can be collected at the port of call and then recycled at the supply point, it can have the advantage of replacing the desalination plant in a water shortage area.

다음으로는, 도 6 및 도 7을 통해 상기의 구성들을 통해 천연가스하이드레이트 연료가 엔진에 공급되는 과정을 순서대로 살펴보기로 한다.Next, a process in which natural gas hydrate fuel is supplied to the engine through the above configurations will be sequentially described through FIGS. 6 and 7.

도 6은 도 1에 도시된 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템(100)을 통해 듀얼퓨얼 엔진에 천연가스하이드레이트 연료를 공급하는 과정을 일련의 순서대로 도시한 순서도이고, 도 7은 도 2에 도시된 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템(200)을 통해 듀얼퓨얼 엔진에 천연가스하이드레이트 연료를 공급하는 과정을 일련의 순서대로 도시한 순서도이다.FIG. 6 is a series of processes of supplying natural gas hydrate fuel to a dual fuel engine through a system 100 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using the natural gas hydrate shown in FIG. 1 Is a flow chart showing the order of, and FIG. 7 is a natural gas to a dual fuel engine through a system 200 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using the natural gas hydrate shown in FIG. It is a flow chart showing the process of supplying hydrate fuel in a series of order.

먼저 도 6을 살펴보면, 엔진(듀얼퓨얼 엔진)으로부터 배출되는 배기가스 또는 가열된 냉각수의 열을 이용하여 천연가스하이드레이트 탱크컨테이너 내 천연가스하이드레이트를 기화시킴으로써 천연가스를 추출하게 된다(S101). 그 다음, 천연가스 레귤레이터를 통해 천연가스의 배출압을 일정하게 조절하고(S102), 열교환기를 통해 천연가스에 일정한 열을 지속적으로 공급하여 온도를 조절하게 된다(S103). 그 다음, 연료 유량계를 통해 천연가스의 유량을 계측하고(S104), 엔진의 연료 흡입부와 연결된 연료 공급관에서 공기를 흡입함과 동시에, 천연가스를 혼소하며 연료 유량 조절밸브를 통해 공기와 천연가스 간의 혼합비를 조절하게 된다(S105). 그 다음, 혼소된 연료(공기+천연가스)를 엔진으로 공급하게 된다(S106). 엔진의 배기 행정에 의해 배출되는 배기가스 또는 냉각수의 열은 다시 천연가스하이드레이트 탱크컨테이너로 공급되어 상기의 단계들이 반복적으로 수행되게 된다(S107).First, referring to FIG. 6, natural gas is extracted by vaporizing natural gas hydrate in a natural gas hydrate tank container using heat of exhaust gas or heated cooling water discharged from an engine (dual fuel engine) (S101). Then, the natural gas discharge pressure is constantly adjusted through the natural gas regulator (S102), and the temperature is controlled by continuously supplying constant heat to the natural gas through the heat exchanger (S103). Then, the flow rate of natural gas is measured through the fuel flow meter (S104), and air is sucked from the fuel supply pipe connected to the fuel intake part of the engine, and the natural gas is mixed and the air and natural gas are mixed through the fuel flow control valve. The mixing ratio of the liver is adjusted (S105). Then, the mixed fuel (air + natural gas) is supplied to the engine (S106). Heat of exhaust gas or coolant discharged by the exhaust stroke of the engine is supplied to the natural gas hydrate tank container again, so that the above steps are repeatedly performed (S107).

도 7을 살펴보면, 엔진(듀얼퓨얼 엔진)으로부터 배출되는 배기가스 또는 냉각수의 열을 이용하여 천연가스하이드레이트 탱크컨테이너 내 천연가스하이드레이트를 기화시킴으로써 천연가스를 추출하게 된다(S201). 이와 동시에, 수소탱크 내 수소를 배출하게 된다(S202).Referring to FIG. 7, natural gas is extracted by vaporizing natural gas hydrate in a natural gas hydrate tank container using heat of exhaust gas or coolant discharged from an engine (dual fuel engine) (S201). At the same time, the hydrogen in the hydrogen tank is discharged (S202).

그 다음, 천연가스 레귤레이터를 통해 천연가스의 배출압을 일정하게 조절하고(S202), 열교환기를 통해 천연가스에 일정한 열을 지속적으로 공급하여 온도를 조절하게 된다(S203). 이와 동시에, 수소 레귤레이터에서는 배출되는 수소의 배출압을 일렁하게 조절한다(S202')Then, the natural gas discharge pressure is constantly adjusted through the natural gas regulator (S202), and the temperature is controlled by continuously supplying constant heat to the natural gas through the heat exchanger (S203). At the same time, the hydrogen regulator smoothly adjusts the discharge pressure of the discharged hydrogen (S202').

그 다음, 연료 유량계를 통해 천연가스의 유량을 계측하고(S204), 엔진의 연료 흡입부와 연결된 연료 공급관에서 공기를 흡입함과 동시에, 수소를 연료 공급관으로 공급함으로써 천연가스와 함께 혼소하며, 연료 유량 조절밸브를 통해 공기와 천연가스 간의 혼합비를 조절하게 된다(S205).Then, the flow rate of natural gas is measured through the fuel flow meter (S204), and at the same time, air is sucked from the fuel supply pipe connected to the fuel intake part of the engine, and hydrogen is supplied to the fuel supply pipe to mix with natural gas. The mixing ratio between air and natural gas is adjusted through the flow control valve (S205).

그 다음, 혼소된 연료(공기+천연가스)를 엔진으로 공급하게 된다(S206). 엔진의 배기행정에 의해 배출되는 배기가스 또는 냉각수의 열은 다시 천연가스하이드레이트 탱크컨테이너로 공급되어 상기의 단계들이 반복적으로 수행되게 된다(S207).Then, the mixed fuel (air + natural gas) is supplied to the engine (S206). Heat of exhaust gas or coolant discharged by the exhaust stroke of the engine is again supplied to the natural gas hydrate tank container so that the above steps are repeatedly performed (S207).

상기에서는 본 발명의 바람직한 실시예를 참조하여 설명하였지만, 해당 기술 분야의 숙련된 당업자는 하기의 청구의 범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. You will understand that you can.

본 발명에 따르면 천연가스하이드레이트에서 천연가스를 추출한 후 이를 최소평형수 선형 선박의 듀얼퓨얼 엔진의 연료로써 활용할 수 있는 바, 본 발명은 조선해양 산업분야에서 널리 이용하여 그 실용적이고 경제적인 가치를 실현할 수 있는 기술이다.According to the present invention, after natural gas is extracted from natural gas hydrate, it can be used as a fuel for a dual fuel engine of a ship with a minimum ballast water.The present invention is widely used in the shipbuilding and marine industry to realize its practical and economic value. It is a technology that can be.

Claims (12)

최소평형수 선박의 연료공급계통에 연결된 하나 이상의 천연가스하이드레이트 탱크컨테이너가 적층된 천연가스하이드레이트 탱크컨테이너 스택;A natural gas hydrate tank container stack in which one or more natural gas hydrate tank containers connected to the fuel supply system of the minimum ballast water vessel are stacked; 상기 천연가스하이드레이트 탱크컨테이너 스택으로부터 추출되는 천연가스의 압력을 일정하게 유지하는 천연가스 레귤레이터;A natural gas regulator maintaining a constant pressure of the natural gas extracted from the natural gas hydrate tank container stack; 상기 천연가스의 추출 중 배관의 손상이나 관막힘 방지를 위해 상기 천연가스의 온도를 조절하는 열교환기;A heat exchanger for controlling the temperature of the natural gas to prevent damage or clogging of the pipe during extraction of the natural gas; 상기 열교환기와 연결되며, 상기 열교환기를 통해 배출되는 천연가스의 유량을 계측하는 연료 유량계;A fuel flow meter connected to the heat exchanger and measuring a flow rate of natural gas discharged through the heat exchanger; 상기 최소평형수 선박 내 엔진의 연료 흡입부와 연결된 연료 공급관; 및A fuel supply pipe connected to the fuel intake part of the engine in the minimum ballast water vessel; And 상기 연료 공급관을 통해 흡입된 공기와 상기 열교환기를 통해 흡입되는 천연가스 간의 혼합비를 제어하는 연료 유량 조절밸브;를 포함하며,Includes; a fuel flow control valve for controlling a mixing ratio between the air sucked through the fuel supply pipe and the natural gas sucked through the heat exchanger, 상기 천연가스하이드레이트 탱크컨테이너 스택에서 상기 천연가스 추출 후 잔류하는 청수를 상기 최소평형수 선박의 평형수로 대체하여 적용하며, 기항지에서 상기 청수를 취합하여 재활용할 수 있도록 상기 청수를 상기 기항지로 공급하는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.Applying the fresh water remaining after extraction of the natural gas in the natural gas hydrate tank container stack by replacing the ballast water of the minimum ballast water vessel, and supplying the fresh water to the port of call so that the fresh water can be collected and recycled at the port of call. A system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship using natural gas hydrate. 제1항에 있어서,The method of claim 1, 상기 천연가스하이드레이트 탱크컨테이너 스택은,The natural gas hydrate tank container stack, 상기 엔진으로부터 배출되는 배기가스(exhaust gas) 또는 냉각수(coolant)의 열을 이용하여 고체상태의 천연가스하이드레이트의 상평형 상태를 조정하여 상기 천연가스를 재기화시키는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.Using natural gas hydrate, characterized in that the natural gas is regasified by adjusting the phase equilibrium state of the solid natural gas hydrate using heat of exhaust gas or coolant discharged from the engine. Thus, it is possible to supply fuel, substitute ballast water, and supply fresh water within the ship. 제1항에 있어서,The method of claim 1, 상기 천연가스 레귤레이터는,The natural gas regulator, 상기 하나 이상의 천연가스하이드레이트 탱크컨테이너 각각으로부터 배출되는 천연가스의 압력을 취합하여 일정한 천연가스 공급 압력이 유지되도록 하는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.A minimum ballast water supply of fuel in a ship using natural gas hydrate, replacement of ballast water, characterized in that the pressure of natural gas discharged from each of the one or more natural gas hydrate tank containers is collected to maintain a constant natural gas supply pressure. And a system capable of supplying fresh water. 제1항에 있어서,The method of claim 1, 상기 천연가스 레귤레이터와 상기 열교환기 사이에 위치하며, 상기 천연가스 레귤레이터로부터 배출되는 천연가스의 배출 상태를 조절하는 천연가스 조절밸브;를 더 포함하는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.A natural gas control valve positioned between the natural gas regulator and the heat exchanger and controlling the discharge state of the natural gas discharged from the natural gas regulator; characterized in that it further comprises, minimum equilibrium using natural gas hydrate A system capable of supplying fuel, replacing ballast water and supplying fresh water in water vessels. 제1항에 있어서,The method of claim 1, 상기 열교환기는,The heat exchanger, 상기 천연가스 조절밸브를 통해 배출되는 천연가스의 추출 중 배관의 손상이나 관막힘 방지를 위하여 열교환을 수행하는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.In order to prevent damage or clogging of pipes during extraction of natural gas discharged through the natural gas control valve, heat exchange is performed. Using natural gas hydrate, fuel supply in the vessel with minimum ballast water, replacement of ballast water, and A system that can supply fresh water. 제1항에 있어서,The method of claim 1, 상기 연료 공급관은 스로틀 바디를 포함하며, 상기 스로틀 바디를 통해 흡입된 공기량은 상기 연료 유량 조절밸브에 전달되는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.The fuel supply pipe includes a throttle body, and the amount of air sucked through the throttle body is transmitted to the fuel flow control valve. Using natural gas hydrate, the fuel supply in the ship with minimum ballast water, replacement of ballast water, and A system that can supply fresh water. 제6항에 있어서,The method of claim 6, 상기 스로틀 바디는,The throttle body, 상기 연료 공급관을 통해 흡입되는 공기량을 조절하는 스로틀 밸브를 포함하는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.A system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using natural gas hydrate, characterized in that it comprises a throttle valve that adjusts the amount of air sucked through the fuel supply pipe. 제1항에 있어서,The method of claim 1, 상기 천연가스하이드레이트 탱크컨테이너 스택은,The natural gas hydrate tank container stack, 상기 최소평형수 선박에 적재된 하나 이상의 컨테이너의 무게 배분에 따라 선박 상에서 배치상태가 변경되도록 마련되며, 상기 최소평형수 선박의 평형수를 대신하여 상기 천연가스하이드레이트 탱크컨테이터 스택에 의해 상기 최소평형수 선박의 종횡경사가 조정되고 적정 흘수(draft)가 확보되는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.It is provided to change the arrangement state on the ship according to the weight distribution of one or more containers loaded on the minimum ballast water vessel, and the minimum balance by the natural gas hydrate tank container stack in place of the ballast water of the minimum ballast water ship. A system capable of supplying fuel, replacing ballast water, and supplying fresh water using natural gas hydrate in the vessel using natural gas hydrate, characterized in that the vertical and horizontal slope of the water vessel is adjusted and an appropriate draft is secured. 제1항에 있어서,The method of claim 1, 상기 천연가스하이드레이트 탱크컨테이너 스택과 상기 연료 공급관 사이에는,Between the natural gas hydrate tank container stack and the fuel supply pipe, 상기 천연가스하이드레이트 탱크컨테이너의 폭발을 방지하기 위한 비상차단밸브(Quick Closing Valve), 회생 압력 밸브(Flashback Pressure Valve) 및 기폭 방지기(Detonation Arrester) 중 어느 하나 이상이 마련되는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.Natural gas, characterized in that at least one of a quick closing valve, a flashback pressure valve, and a detonation arrester for preventing explosion of the natural gas hydrate tank container is provided. A system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship using hydrate. 선박의 연료공급계통에 연결된 하나 이상의 천연가스하이드레이트 탱크컨테이너 및 하나 이상의 수소탱크가 적층된 천연가스하이드레이트 탱크컨테이너 스택;A natural gas hydrate tank container stack in which one or more natural gas hydrate tank containers and one or more hydrogen tanks are stacked connected to the fuel supply system of the ship; 상기 천연가스하이드레이트 탱크컨테이너 스택으로부터 배출되는 천연가스의 압력을 조절하는 천연가스 레귤레이터;A natural gas regulator for controlling a pressure of natural gas discharged from the natural gas hydrate tank container stack; 상기 수소탱크로부터 배출되는 수소의 압력을 조절하는 수소 레귤레이터;A hydrogen regulator controlling the pressure of hydrogen discharged from the hydrogen tank; 상기 천연가스 조절밸브를 통해 배출되는 천연가스의 온도를 조절하는 열교환기;A heat exchanger for controlling the temperature of natural gas discharged through the natural gas control valve; 상기 열교환기와 연결되며, 상기 열교환기를 통해 배출되는 천연가스의 유량을 계측하는 연료 유량계;A fuel flow meter connected to the heat exchanger and measuring a flow rate of natural gas discharged through the heat exchanger; 상기 수소 레귤레이터와 연결되며, 상기 수소 레귤레이터로부터 배출되는 수소의 유량을 계측하는 수소 유량계;A hydrogen flow meter connected to the hydrogen regulator and measuring a flow rate of hydrogen discharged from the hydrogen regulator; 선박 내 엔진의 연료 흡입부와 연결된 연료 공급관; 및A fuel supply pipe connected to the fuel intake of the engine in the ship; And 상기 연료 공급관을 통해 흡입된 공기와 상기 열교환기를 통해 배출되는 천연가스 간의 혼합비를 제어하는 연료 유량 조절밸브;를 포함하며,Includes; a fuel flow rate control valve for controlling a mixing ratio between the air sucked through the fuel supply pipe and the natural gas discharged through the heat exchanger, 상기 천연가스하이드레이트 탱크컨테이너 스택에서 상기 천연가스 추출 후 잔류하는 청수를 상기 최소평형수 선박의 평형수로 대체하여 적용하며, 기항지에서 상기 청수를 취합하여 재활용할 수 있도록 상기 청수를 상기 기항지로 공급하는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.Applying the fresh water remaining after extraction of the natural gas in the natural gas hydrate tank container stack by replacing the ballast water of the minimum ballast water vessel, and supplying the fresh water to the port of call so that the fresh water can be collected and recycled at the port of call. A system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship using natural gas hydrate. 제10항에 있어서,The method of claim 10, 상기 천연가스하이드레이트 탱크컨테이너 스택은,The natural gas hydrate tank container stack, 상기 최소평형수 선박에 적재된 하나 이상의 컨테이너의 무게 배분에 따라 선박 상에서 배치상태가 변경되도록 마련되며, 상기 최소평형수 선박의 평형수를 대신하여 상기 천연가스하이드레이트 탱크컨테이터 스택에 의해 상기 최소평형수 선박의 종횡경사가 조정되고 적정 흘수(draft)가 확보되는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.It is provided to change the arrangement state on the ship according to the weight distribution of one or more containers loaded on the minimum ballast water vessel, and the minimum balance by the natural gas hydrate tank container stack in place of the ballast water of the minimum ballast water ship. A system capable of supplying fuel, replacing ballast water, and supplying fresh water using natural gas hydrate in the vessel using natural gas hydrate, characterized in that the vertical and horizontal slope of the water vessel is adjusted and an appropriate draft is secured. 제10항에 있어서,The method of claim 10, 상기 천연가스하이드레이트 탱크컨테이너 및 상기 수소탱크 각각과 상기 연료 공급관 사이에는,Between each of the natural gas hydrate tank container and the hydrogen tank and the fuel supply pipe, 상기 천연가스하이드레이트 연료 및 상기 수소탱크의 폭발을 방지하기 위한 비상차단밸브(Quick Closing Valve), 회생 압력 밸브(Flashback Pressure Valve) 및 기폭 방지기(Detonation Arrester) 중 어느 하나 이상이 마련되는 것을 특징으로 하는, 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템.It characterized in that any one or more of a quick closing valve, a flashback pressure valve, and a detonation arrester for preventing explosion of the natural gas hydrate fuel and the hydrogen tank are provided. , A system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship using natural gas hydrate.
PCT/KR2019/007273 2019-06-14 2019-06-17 System capable of fuel supply, ballast water replacement, and clean water supply using natural gas hydrate in minimal ballast water ship Ceased WO2020251104A1 (en)

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