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WO2007039480A1 - Procede et installation de regazeification du gaz naturel liquefie avec recuperation de chaleur - Google Patents

Procede et installation de regazeification du gaz naturel liquefie avec recuperation de chaleur Download PDF

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Publication number
WO2007039480A1
WO2007039480A1 PCT/EP2006/066604 EP2006066604W WO2007039480A1 WO 2007039480 A1 WO2007039480 A1 WO 2007039480A1 EP 2006066604 W EP2006066604 W EP 2006066604W WO 2007039480 A1 WO2007039480 A1 WO 2007039480A1
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WIPO (PCT)
Prior art keywords
lng
circuit
heating fluid
regasification
circuit part
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Ceased
Application number
PCT/EP2006/066604
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English (en)
Inventor
Patrick Janssens
Michel Bouckaert
Raymond Caby
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Exmar NV
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Exmar NV
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Publication of WO2007039480A1 publication Critical patent/WO2007039480A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • F17C9/04—Recovery of thermal energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/035—High pressure, i.e. between 10 and 80 bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0171—Arrangement
    • F17C2227/0178—Arrangement in the vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
    • F17C2227/0316—Water heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
    • F17C2227/0316—Water heating
    • F17C2227/0318—Water heating using seawater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
    • F17C2227/0323—Heat exchange with the fluid by heating using another fluid in a closed loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0327—Heat exchange with the fluid by heating with recovery of heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/0393—Localisation of heat exchange separate using a vaporiser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/031—Dealing with losses due to heat transfer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/044—Avoiding pollution or contamination
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/05—Regasification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/011—Barges

Definitions

  • the present invention relates to a liquefied natural gas (LNG) regasification plant on a vessel, such as for example an LNG transport ship, an LNG storage barge or an offshore regasification unit or the like, using a heat transfer fluid, such as for example sea water or river water, as heat source for regasification.
  • LNG liquefied natural gas
  • the present invention further relates to a method for regasifying LNG by means of such an LNG regasification plant on a vessel.
  • FIG. 1 A known LNG regasification plant on a vessel is shown in figures 1 and 2.
  • This LNG regasification plant comprises a number of regasification trains for supplying and regasifying LNG from cargo tanks into a natural gas discharge line and a heating water circuit.
  • Each regasification train comprises an LNG vaporizer having a heating water inlet and a heating water outlet.
  • the heating water circuit comprises a first circuit part which is connected to the heating water inlet of each LNG vaporizer and a second circuit part which is connected to the heating water outlet of each
  • the plant can function in sea water heated mode and in steam heated mode.
  • sea water heated mode sea water is supplied from the environment and, after heat is extracted from it in the LNG vaporizers, discharged back into the environment.
  • steam heated mode the sea water circulates in a closed loop between the LNG vaporizers and one or more steam heaters, by which the sea water is reheated to the desired temperature at the inlet of the LNG vaporizers.
  • the steam for the steam heaters is condensed in the heating water heaters.
  • steam is also supplied to the steam turbines of the electrical generating plant onboard the vessel. The steam coming out of these turbines is condensed in the main condenser, which uses large volumes of sea water as cooling water.
  • the known LNG regasification plant has the disadvantage that in both modes, heat is exchanged with sea water from the environment, so that the plant cannot be used in areas where this is not permitted in view of environmental restrictions.
  • Disclosure of the invention It is an aim of the invention to provide an LNG regasification plant with which the heat exchange with water from the environment can be reduced or even eliminated.
  • the LNG regasification plant of the invention comprises at least one regasification train for supplying and regasifying LNG from one or more LNG cargo tanks into a natural gas discharge line.
  • Each regasification train comprises an LNG vaporizer having a heating fluid inlet and a heating fluid outlet.
  • the plant further comprises a heating fluid circuit, of which a first circuit part is connected to the heating fluid inlet of each LNG vaporizer and a second circuit part is connected to the heating fluid outlet of each LNG vaporizer, and a cooling fluid circuit for supplying cooling fluid to an additional heat exchanger forming part of an additional thermodynamic circuit, also located on the vessel.
  • the cooling fluid circuit comprises a third circuit part, which is connected between the second circuit part of the heating fluid circuit and a cooling fluid inlet of the additional heat exchanger, and a fourth circuit part, which is connected between a cooling fluid outlet of the additional heat exchanger and the first circuit part.
  • sea water heated mode the volume of sea water which has to be supplied from the environment as heating fluid and is discharged back into the environment after heat is extracted from it, is reduced by the volume which is used as cold source in the additional thermodynamic circuit.
  • steam heated mode less steam needs to be produced in the main boiler, since part of the cooled heating fluid is reheated via the cooling circuit, so that the volume of sea water which needs to be supplied to the main condenser as cooling fluid can also be reduced. So in steam heated mode, there is also the advantage that the overall efficiency of the plant can be improved.
  • the first circuit part is connected to an inlet via which water from the environment can be supplied to the heating fluid circuit and the second circuit part is connected to an outlet via which heating fluid coming from the LNG vaporizers can be discharged towards the environment.
  • the first and second circuit parts are preferably connected to each other via one or more steam heaters for reheating the heating fluid.
  • the inlet and outlet towards the environment are preferably equipped with valves, so that a choice can be made between operation in sea water heated mode and steam heated mode.
  • the one or more steam heaters form part of a steam circuit comprising at least one boiler for generating steam and a main condenser for condensing steam, the main condenser forming part of the additional thermodynamic circuit.
  • a steam circuit comprising at least one boiler for generating steam and a main condenser for condensing steam, the main condenser forming part of the additional thermodynamic circuit.
  • the cooling fluid flowing through the cooling fluid circuit which is connected to the heating fluid circuit of the LNG vaporizers, is used for cooling the main condenser cooling fluid in a recovery heat exchanger.
  • the cooling fluid coming from the heating fluid circuit of the LNG vaporizers is used as main condenser cooling fluid, which means that the main condenser itself forms the additional heat exchanger.
  • Figure 1 shows a schematic drawing of a prior art LNG regasification plant on an LNG transport vessel.
  • Figure 2 shows a schematic drawing of another prior art LNG regasification plant on an LNG transport vessel.
  • Figure 3 shows a schematic drawing of an LNG regasification plant on an LNG transport vessel according to the invention.
  • Figure 4 shows a possible piping arrangement for an LNG regasification plant according to figure 3.
  • first, second, third and the like in the description and in the claims are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. The terms are interchangeable under appropriate circumstances and the embodiments of the invention can operate in other sequences than described or illustrated herein. Moreover, the terms top, bottom, over, under and the like in the description and the claims are used for descriptive purposes and not necessarily for describing relative positions. The terms so used are interchangeable under appropriate circumstances and the embodiments of the invention described herein can operate in other orientations than described or illustrated herein.
  • FIG. 1 shows a schematic drawing of a prior art LNG regasification system on an LNG transport vessel.
  • LNG/NG side LNG/NG side:
  • LNG is supplied from the cargo tanks 30 to the regasification plant through dedicated LNG feed pumps 31 installed in the main cargo tanks 30.
  • the LNG is first fed to a suction drum 32, which functions as a buffer, and is from there distributed to the different regasification trains.
  • Each regasification train comprises a high pressure LNG pump 33 and an LNG vaporizer 10.
  • a subsea pipeline is shown which comprises a swivel 37 to which the hose 36 is connected and an STL mooring buoy/riser 38.
  • the primary heating source for the vaporizers 10 is sea water.
  • the sea water is fed from a sea water suction inlet 16 by the heating water/ballast pumps 25, located in the ship's engine room, to the heating water booster pumps 23 located in a pump room in the ship's forward area, from there fed to the LNG vaporizers 10 and finally to a sea water overboard discharge 17 located in the forward area of the ship.
  • Steam heaters 18 are also provided in the forward pump room which allow, depending on the prevailing environmental conditions or regulatory restrictions, additional heating of the sea water before sending it to the vaporizers 10, or circulation of the heating water in a fully closed system, herein called “closed loop” or 'steam heated” mode (see also Fig. 2 bottom). This way of doing can completely avoid the need to pump up external sea water. Steam is in this case fed from the ship's main boilers (not shown) located in the engine room.
  • the heating water outlet temperature is at all times to be maintained above approx. 4°C.
  • the propulsion system and power generating plant on LNG ships traditionally comprises steam driven turbines (not shown).
  • Superheated steam is generated in boilers having the possibility to burn heavy fuel oil as well as natural gas (including boil off gas from the main cargo tanks).
  • the steam coming from the main and auxiliary steam turbines is condensed in a vacuum condenser 20 ("The Main Condenser").
  • This condenser is operated under vacuum conditions, in order to obtain an acceptable efficiency of the steam cycle.
  • large volumes of sea water typically between 7,000 and 14,000 m 3 /h for a standard LNGC
  • sea water outlet temperature typically ⁇ t ⁇ 4-5°C.
  • Minimum sea water inlet temperature is required (approx 14.5°C) to prevent freezing of the sea water in the vaporizer system.
  • Fig. 3 shows the adaptations to such an existing system according to the invention.
  • the plant further comprises the components shown in Fig. 1 and 2, namely the cargo tanks 30, the LNG feed pumps 31 , the suction drum 32, high pressure LNG pumps 33, an NG discharge line with a metering unit 34, a pressure control valve 35 and a flex hose 36 for coupling to a swivel 37 and an STL mooring bouy/riser 38 or any subsea or shore pipeline.
  • the cold heating water coming out of the LNG vaporizers 10 can be used for cooling of the main condenser 20, thus eliminating the need to use external sea water for the main condenser 20 and entirely recovering the heat otherwise lost into the sea through the main condenser cooling water.
  • the cooling water of the main condenser 20 can now be used in a closed loop as well.
  • a recovery heat exchanger 15 can be provided with on one side the cooling water circulating through the main condenser 20 using a circulating pump 27 and on the other side part of the LNG vaporizer heating water which is branched off from the LNG vaporizer common heating water outlet, also using a circulating pump 25.
  • the recovery heat exchanger 15 can be located in the engine room aft, in the vicinity of the main condenser 20.
  • the heating water can be circulated to the engine room and back forward using the existing water ballast lines 21 , 22 of the vessel which are running through a pipe duct along the ship's length.
  • the heating water can be circulated and the flow through the branch line can be controlled using one of the ship's ballast pumps 25 (at reduced speed if required).
  • ballasting of the tanks during discharge operations will be performed through a separate filling line.
  • the proposed system has following benefits:
  • the regasification capacity is substantially improved to the amount of heat that is recovered entirely from the main condenser resulting in a substantially reduced discharge time (an improvement of 15 to 20% of the regasification rate can typically be achieved with the same fuel consumption).
  • the fuel efficiency of the regasification process is improved with 15 to 20%, resulting in reduced exhaust gas emissions and a more economical operation at constant regasification rate.
  • Fig. 4 shows a possible piping arrangement based on an LNGC.
  • the regasification circuit is shown, comprising one or more heating water circulation pumps 23, one or more steam heaters 18 and one or more regas vaporizers 10. Note that the valves towards overboard outlets 17 are closed, meaning that the regasification circuit functions in closed loop mode.
  • the circuit further comprises an expansion tank 24 for pressurising the system.
  • the heating water circulates through a first part 1 via which it is supplied to the inlets 11 of the vaporizers 10 and a second part 2 via which the cooled heating water is discharged from the outlets 12 of the vaporizers. These parts are also indicated in Fig. 3.
  • This cooling water circuit comprises a third part 3 (including ballast line 21 ) connecting the second part 2 of the regasification circuit to the inlet 13 of the recovery exchanger 15 and a fourth part 4 (including ballast line 22) connecting the outlet 14 of the recovery exchanger 15 to the first part 1 of the regasification circuit.
  • the recovery exchanger 15 forms part of the main condenser cooling water circuit along with a circulating pump 27, a sea water inlet 28 with supply pump 26 and a sea water outlet 29.
  • the heat absorbed by the cooling water in the main condenser 20 is exchanged with the (colder) heating water of the regasification circuit.
  • the condenser cooling water is cooled to the temperature needed at the inlet of the main condenser 20, so that the cooling water circuit can also function in closed loop mode.
  • the main valves to the open sea inlet 28 and outlet 29 are closed as well.
  • the heating water of the regasification circuit is heated, so that less heat needs to be added in the steam heater and energy consumption can be reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

L'invention porte sur une installation de regazéification du GNL sur un navire, tel qu'un bâtiment de transport du GNL, une barge de stockage du GNL ou une unité de regazéification en mer ou analogue, cette installation utilisant un fluide de transfert thermique comme source de chaleur pour la regazéification. Chaque train de regazéification de l'installation comprend un vaporiseur de GNL (10) pourvu d'un orifice d'admission (11) du fluide calorifique et d'un orifice d'évacuation du fluide calorifique (12) raccordé à un circuit (1, 2) de fluide calorifique. Un circuit de fluide de refroidissement (3, 4) envoie le fluide de refroidissement dans un échangeur thermique additionnel (15), faisant partie intégrante d'un circuit thermodynamique additionnel sur le navire, et est raccordé au circuit de fluide calorifique pour récupérer la chaleur qui se perd sinon dans l'environnement. L'invention porte également sur un procédé correspondant de regazéification du GNL.
PCT/EP2006/066604 2005-09-21 2006-09-21 Procede et installation de regazeification du gaz naturel liquefie avec recuperation de chaleur Ceased WO2007039480A1 (fr)

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Cited By (18)

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WO2008066390A1 (fr) * 2006-11-28 2008-06-05 Moss Maritime As Regazification de gaz naturel liquéfié
EP2045506A1 (fr) * 2007-10-04 2009-04-08 Shell Internationale Researchmaatschappij B.V. Système d'installation en mer pour la vaporisation d'un flux d'hydrocarbures liquéfiés, procédé pour la fourniture d'un tel système et procédé pour la vaporisation d'un flux d'hydrocarbures liquéfiés
WO2009068731A3 (fr) * 2007-11-30 2009-07-16 Waertsilae Finland Oy Unité de regazéification et de stockage de gaz naturel liquéfié flottante et procédé de regazéification de gaz naturel liquéfié sur ladite unité
WO2009143261A1 (fr) * 2008-05-20 2009-11-26 Charles Neill Système de livraison de gaz naturel liquéfié
EP2146132A1 (fr) * 2008-07-15 2010-01-20 Cryostar SAS Conversion de gaz naturel liquéfié
WO2010007535A1 (fr) * 2008-07-15 2010-01-21 Cryostar Sas Conversion de gaz naturel liquéfié
CN102927645A (zh) * 2012-11-15 2013-02-13 上海佳豪船舶工程设计股份有限公司 一种应用液化天然气为燃料的船舶冷能利用装置及方法
WO2013083663A1 (fr) * 2011-12-05 2013-06-13 Blue Wave Co S.A. Bouées de chargement-déchargement pour les opérations liées au gnc
CN103383061A (zh) * 2013-08-06 2013-11-06 国鸿液化气机械工程（大连）有限公司 一种液化天然气强制气化系统
WO2014086418A1 (fr) * 2012-12-05 2014-06-12 Blue Wave Co S.A. Bouée de chargement/déchargement pour opérations de gaz naturel comprimé
WO2014086417A1 (fr) * 2012-12-05 2014-06-12 Blue Wave Co S.A. Bouée de chargement/déchargement pour opérations de gaz naturel comprimé
CN107560129A (zh) * 2017-08-31 2018-01-09 中国能源建设集团广东省电力设计研究院有限公司 天然气加热与空调制冷耦合系统及方法
CN108698673A (zh) * 2016-03-18 2018-10-23 现代重工业株式会社 具有气体再汽化系统的船舶
CN109723966A (zh) * 2019-01-25 2019-05-07 太平洋海洋工程（舟山）有限公司 一种用于fsru的液态天然气再气化系统
CN110155297A (zh) * 2019-05-29 2019-08-23 中船澄西船舶修造有限公司 一种能适应化学品船液货舱不同加热需求的加热系统
CN110374889A (zh) * 2019-06-28 2019-10-25 武汉船用机械有限责任公司 船用深井压载泵
CN111022921A (zh) * 2019-11-27 2020-04-17 惠生（南通）重工有限公司 一种印刷板式lng气化器的换热系统
CN111878701A (zh) * 2020-08-25 2020-11-03 中海石油气电集团有限责任公司 一种海上液化天然气的再气化系统及方法

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US4055050A (en) * 1976-02-11 1977-10-25 Vladimir Borisovich Kozlov Apparatus for and method of regasifying liquefied natural gas
WO1995016105A1 (fr) * 1993-12-10 1995-06-15 Cabot Corporation Centrale a cycles combines amelioree, alimentee par gaz naturel liquefie
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WO2005043032A1 (fr) * 2003-10-29 2005-05-12 Shell Internationale Research Maatschappij B.V. Systemes d'equipement de dechargement pour structure de stockage de gaz naturel liquefie

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008066390A1 (fr) * 2006-11-28 2008-06-05 Moss Maritime As Regazification de gaz naturel liquéfié
US20100154440A1 (en) * 2006-11-28 2010-06-24 Moss Maritime As Re-gasification of lng
EP2045506A1 (fr) * 2007-10-04 2009-04-08 Shell Internationale Researchmaatschappij B.V. Système d'installation en mer pour la vaporisation d'un flux d'hydrocarbures liquéfiés, procédé pour la fourniture d'un tel système et procédé pour la vaporisation d'un flux d'hydrocarbures liquéfiés
WO2009068731A3 (fr) * 2007-11-30 2009-07-16 Waertsilae Finland Oy Unité de regazéification et de stockage de gaz naturel liquéfié flottante et procédé de regazéification de gaz naturel liquéfié sur ladite unité
WO2009143261A1 (fr) * 2008-05-20 2009-11-26 Charles Neill Système de livraison de gaz naturel liquéfié
EP2146132A1 (fr) * 2008-07-15 2010-01-20 Cryostar SAS Conversion de gaz naturel liquéfié
WO2010007535A1 (fr) * 2008-07-15 2010-01-21 Cryostar Sas Conversion de gaz naturel liquéfié
CN102216668A (zh) * 2008-07-15 2011-10-12 克里奥斯塔股份有限公司 液化天然气的转化
WO2013083663A1 (fr) * 2011-12-05 2013-06-13 Blue Wave Co S.A. Bouées de chargement-déchargement pour les opérations liées au gnc
CN102927645A (zh) * 2012-11-15 2013-02-13 上海佳豪船舶工程设计股份有限公司 一种应用液化天然气为燃料的船舶冷能利用装置及方法
WO2014086417A1 (fr) * 2012-12-05 2014-06-12 Blue Wave Co S.A. Bouée de chargement/déchargement pour opérations de gaz naturel comprimé
WO2014086418A1 (fr) * 2012-12-05 2014-06-12 Blue Wave Co S.A. Bouée de chargement/déchargement pour opérations de gaz naturel comprimé
CN103383061A (zh) * 2013-08-06 2013-11-06 国鸿液化气机械工程（大连）有限公司 一种液化天然气强制气化系统
CN108698673A (zh) * 2016-03-18 2018-10-23 现代重工业株式会社 具有气体再汽化系统的船舶
CN108698673B (zh) * 2016-03-18 2022-03-01 现代重工业株式会社 具有气体再汽化系统的船舶
US11136103B2 (en) 2016-03-18 2021-10-05 Hyundai Heavy Industries Co., Ltd. Ship having gas regasification system
EP3431382A4 (fr) * 2016-03-18 2019-11-27 Hyundai Heavy Industries Co., Ltd. Navire comportant un système de regazéification de gaz
CN107560129B (zh) * 2017-08-31 2020-04-21 中国能源建设集团广东省电力设计研究院有限公司 天然气加热与空调制冷耦合系统及方法
CN107560129A (zh) * 2017-08-31 2018-01-09 中国能源建设集团广东省电力设计研究院有限公司 天然气加热与空调制冷耦合系统及方法
CN109723966A (zh) * 2019-01-25 2019-05-07 太平洋海洋工程（舟山）有限公司 一种用于fsru的液态天然气再气化系统
CN110155297A (zh) * 2019-05-29 2019-08-23 中船澄西船舶修造有限公司 一种能适应化学品船液货舱不同加热需求的加热系统
CN110155297B (zh) * 2019-05-29 2023-12-26 中船澄西船舶修造有限公司 一种能适应化学品船液货舱不同加热需求的加热系统
CN110374889B (zh) * 2019-06-28 2021-06-15 武汉船用机械有限责任公司 船用深井压载泵
CN110374889A (zh) * 2019-06-28 2019-10-25 武汉船用机械有限责任公司 船用深井压载泵
CN111022921A (zh) * 2019-11-27 2020-04-17 惠生（南通）重工有限公司 一种印刷板式lng气化器的换热系统
CN111022921B (zh) * 2019-11-27 2022-04-12 惠生（南通）重工有限公司 一种印刷板式lng气化器的换热系统
CN111878701A (zh) * 2020-08-25 2020-11-03 中海石油气电集团有限责任公司 一种海上液化天然气的再气化系统及方法

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