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WO2004018592A1 - Serial injection device for tunnel catalyst-free waste plastics pyrolysis oil recovery system - Google Patents

Serial injection device for tunnel catalyst-free waste plastics pyrolysis oil recovery system

Info

Publication number
WO2004018592A1
WO2004018592A1 PCT/KR2002/001879 KR0201879W WO2004018592A1 WO 2004018592 A1 WO2004018592 A1 WO 2004018592A1 KR 0201879 W KR0201879 W KR 0201879W WO 2004018592 A1 WO2004018592 A1 WO 2004018592A1
Authority
WO
WIPO (PCT)
Prior art keywords
recycling
waste plastics
furnace
recycling furnace
chamber
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/KR2002/001879
Other languages
French (fr)
Inventor
Young-Ho Kim
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.)
SANSOOGREEN INDUSTRY Co Ltd
Original Assignee
SANSOOGREEN INDUSTRY Co Ltd
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 SANSOOGREEN INDUSTRY Co Ltd filed Critical SANSOOGREEN INDUSTRY Co Ltd
Priority to AU2002348643A priority Critical patent/AU2002348643A1/en
Publication of WO2004018592A1 publication Critical patent/WO2004018592A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • C10G1/10—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G7/00—Distillation of hydrocarbon oils
    • C10G7/12—Controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B1/00—Retorts
    • C10B1/02—Stationary retorts
    • C10B1/06—Horizontal retorts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B1/00—Retorts
    • C10B1/02—Stationary retorts
    • C10B1/08—Inclined retorts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
    • C10B47/28—Other processes
    • C10B47/32—Other processes in ovens with mechanical conveying means
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/07—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of solid raw materials consisting of synthetic polymeric materials, e.g. tyres
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B7/00—Coke ovens with mechanical conveying means for the raw material inside the oven
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics

Definitions

  • the present invention relates to a tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst, characterized in that the waste plastics in an air-free state can be automatically and continuously fed into a recycling furnace provided to the tunnel type device.
  • waste plastics which are discharged in larger amounts after a measured rate system and a separated collection, have very low recycling efficiencies.
  • the disposal of such waste plastics is issued as an important social and industrial problem.
  • the waste plastics have been disposed by means of incineration or landfills.
  • the incineration of the waste plastics results in emissions of harmful materials, such as dioxin, thus causing environmental contamination.
  • the landfill disposal suffers from drawbacks, such as the shortage of landfill space and unstabilized ground due to inert properties of plastics.
  • techniques to recycle the waste plastics to fuel oil or petroleum resources by pyrolysis are worth noticing, in view of decreasing environmental contamination and recycling waste materials.
  • the pyrolysis technique is used to heat wastes at high temperatures without oxygen or in a low oxygen atmosphere, and then degrade them.
  • Various organic polymer compounds having long carbon chains are reduced and degraded to low molecular weight products in the absence of oxygen. Such products become gas or liquid, according to the length of the carbon chain thereof and the form of the compound, and also, have the similar properties to petroleum compounds, and thus can be reused as combustion fuels.
  • waste plastics mainly used as the chemical polymer wastes are easily subjected to pyrolysis, according to the following: That is, first, the polymer wastes are easily degraded by heat even though degradation conditions and degrees are different. Second, even though hazardous materials are produced, they are generated in a pure form or relatively easily disposed due to a very low air rate. Third, when the polymer wastes are reduced to original low molecular weight materials, expensive raw materials including monomers can be recycled, and as well, combustion gas or oil of high capacity can be recycled.
  • a tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst, comprising a recycling furnace supported by a plurality of support members in a recycling chamber heated by heat of a hot combustion gas generated from a combustion chamber and indirectly
  • a feeding hopper vertically mounted to a back upper portion of the recycling furnace to continuously feed the waste plastics into the recycling furnace in a state of air inflow being blocked
  • a cylinder mounted to a back portion of the recycling furnace to act to compress the waste plastics fed into the recycling furnace through the feeding hopper to one side of the recycling furnace
  • a piston mounted to an end of a cylinder rod of the cylinder to compress the waste plastics to the one side of the recycling furnace according to a forward movement of the cylinder rod by action of the cylinder
  • a plurality of exhaust pipes vertically mounted at regular intervals to an upper portion of the recycling furnace to feed a pyrolysis gas generated from pyrolyzed waste plastics to a condenser.
  • an exterior wall of the recycling chamber of the tunnel type device is formed so that an outer surface of the recycling furnace of the recycling chamber is surrounded with fire resistant bricks, clay and a protective iron sheet, to prevent the external emission of heat of the recycling chamber.
  • the tunnel type device comprises a guide member provided to one side of a lower end of each of the exhaust pipes in the recycling furnace to direct the pyrolysis gas into the exhaust pipes.
  • the tunnel type device comprises an outlet mounted to a lower end of the recycling furnace and opened and shut by a shutter to discharge end wastes.
  • the recycling chamber including the recycling furnace is slantingly mounted so that a position of the feeding hopper is higher than that of the outlet, based on a bottom mounting surface thereof, so as to easily feed and pyrolyze the waste plastics.
  • FIG. 1 is a block diagram schematically showing a tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst, according to the present invention
  • FIG. 2 is a front view schematically showing the tunnel type device of the present invention
  • FIG. 3 is a perspective view showing a main part of the tunnel type device of the present invention.
  • FIG. 4 is a front view of FIG. 3;
  • FIG. 5 is a side sectional view of the tunnel type device of the present invention.
  • FIG. 1 is a schematic block diagram of a tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst, according to the present invention.
  • FIG. 2 is a front view of the tunnel type device of the present invention.
  • FIG. 3 is a perspective view of a main part of the tunnel type device of the present invention, which is partially cut away, and
  • FIG. 4 is a front view of FIG. 3.
  • FIG. 5 is a side sectional view of the tunnel type device of the present invention.
  • the tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst includes a recycling furnace 30 supported by a plurality of support members 32 made of marble having high heat resistance, in a recycling chamber 20 heated by heat of a hot combustion gas generated from a combustion chamber 10.
  • a recycling furnace 30 is indirectly heated by the heat of the hot combustion gas generated from the combustion chamber 10.
  • an external wall of the recycling chamber 20 is formed so that an outer surface of the recycling furnace 30 of the recycling chamber 20 is surrounded with fire resistant bricks 22, clay 24 and a protective iron sheet 26, to prevent external emission of heat of the recycling chamber 20.
  • the recycling furnace 30 of the recycling chamber 20 has a feeding hopper 34 vertically provided at a back upper portion thereof.
  • the feeding hopper 34 acts to continuously feed the waste plastics into the recycling furnace 30 in the state of air inflow being blocked.
  • a pair of shutters 36 are mounted to an upper portion of the feeding hopper 34 and thus function for opening and shutting to block air inflow upon feeding the waste plastics.
  • a cylinder 40 is mounted to act to compress the waste plastics fed into the recycling furnace 30 through the feeding hopper 34 to one side of the recycling furnace 30.
  • a piston 44 which functions to compress the waste plastics to the one side of the recycling furnace 30 according to a forward movement of a cylinder rod 42 by action of the cylinder 40, is mounted to an end of the cylinder rod 42 of the cylinder 40.
  • a plurality of exhaust pipes 60 are vertically mounted at regular intervals to an upper portion of the recycling furnace 30 of the recycling chamber 20, in which respective exhaust pipes 60 act to feed a pyrolysis gas generated from pyrolyzed waste plastics to a condenser 50.
  • One side of a lower end of each of the exhaust pipes 60 in the recycling furnace 30 is provided with a guide member 70 to direct the pyrolysis gas into the exhaust pipes 60.
  • a lower end of the recycling furnace 30 is provided with an outlet 38 acting for opening and shutting by a shutter 37 to discharge final wastes.
  • the recycling chamber 20 including the recycling furnace 30 is slantingly mounted so that a position of the feeding hopper 34 is higher than that of the outlet 38, based on a bottom mounting surface thereof, to easily feed and pyrolyze the waste plastics.
  • the reference numeral 82 designates a heat exchanger
  • the numerals 84 and 86 designate a multicyclone and a washing tower, respectively.
  • the reference numeral 88 indicates a chimney.
  • the waste plastics are fed into the recycling furnace 30 supported by the plurality of the support members 32 made of marble in the recycling chamber 20 provided to the tunnel type device of the present invention, by means of the feeding hopper 34 vertically mounted to the back upper portion of the recycling furnace 30.
  • Such waste plastics are compressed to one side of the recycling furnace 30 while the piston 44 mounted to the end of the cylinder rod 42 is moved forward, according to a forward movement of the cylinder rod 42 by the action of the cylinder 40 mounted to the back portion of the recycling furnace 30.
  • heat transferred to the recycling chamber 20 by the hot combustion gas generated from the combustion chamber 10 is indirectly applied around the recycling furnace 30 of the recycling chamber 20.
  • the waste plastics are pyrolyzed to obtain a pyrolysis gas, which then ascends and is fed into the plurality of the exhaust pipes 60 vertically mounted at regular intervals to the upper portion of the recycling furnace 30, and finally passes through the condenser 50.
  • the gas passes through large numbers of tubes of the condenser 50, it is cooled by water of about 40-50°C surrounding the tubes and then condensed.
  • condensed gas is recycled to oil, whereas the non-condensed gas is returned to the combustion chamber 10 and used as a fuel.
  • the exterior wall of the recycling chamber 20 is formed to surround the outer surface of the recycling furnace 30 with the fire resistant bricks 22, clay 24 and the protective iron sheet 26, thereby effectively preventing external emission of heat of the recycling chamber 20.
  • the pyrolysis gas flows readily inward the exhaust pipes 60 by means of the guide members 70.
  • optimal temperatures required to pyrolyze the waste plastics are preferably about 500°C.
  • the recycling chamber 20 including the recycling furnace 30 is slantingly mounted so that the position of the feeding hopper 34 is higher than that of the outlet 38, based on the bottom mounting surface thereof. Therefore, the waste plastics can be easily and efficiently fed and pyrolyzed.
  • Heat energy which is transferred to the inside of the recycling chamber 20 and used to indirectly heat the recycling furnace 30 of the recycling chamber 20, is heat-exchanged through the heat-exchanger 82 connected to the back portion of the recycling chamber 20, followed by passing through the multicyclone 84 and washing in the washing tower 86, and then externally discharged through the chimney 88. Thereby, air pollution can be effectively prevented.
  • the present invention provides a tunnel type device for continuously feeding water plastics to be recycled to pyrolysis oil in the absence of a catalyst, characterized in that the waste plastics are automatically and continuously fed into a recycling furnace provided to the tunnel type device in an air-free state.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

A tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil without a catalyst includes a recycling furnace (30) indirectly heated in a recycling chamber (20) heated by heat of a hot combustion gas of a combustion chamber (10), a feeding hopper (34) vertically mounted to the recycling furnace to continuously feed the waste plastics, a cylinder (40) mounted to the recycling furnace to act to compress the waste plastics to one side of the recycling furnace, a piston (44) mounted to a cylinder rod (42) of the cylinder to compress the waste plastics to one side of the recycling furnace according to forward movement of the cylinder rod by action of the cylinder, and a plurality of exhaust pipes (60) vertically mounted at regular intervals to the recycling furnace to feed a pyrolysis gas to a condenser (50).

Description

SERIAL INJECTION DEVICE FOR TUNNEL CATALYST-FREE WASTE PLASTICS PYROLYSIS OIL RECOVERY SYSTEM
Technical Field
The present invention relates to a tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst, characterized in that the waste plastics in an air-free state can be automatically and continuously fed into a recycling furnace provided to the tunnel type device.
Background Art
In recent years, production and consumption of plastics have become remarkably increased according to the rapid developments of plastic industries and the enhancement of industrial activities. However, waste plastics, which are discharged in larger amounts after a measured rate system and a separated collection, have very low recycling efficiencies. Thus, the disposal of such waste plastics is issued as an important social and industrial problem.
Conventionally, the waste plastics have been disposed by means of incineration or landfills. However, the incineration of the waste plastics results in emissions of harmful materials, such as dioxin, thus causing environmental contamination. Meanwhile, the landfill disposal suffers from drawbacks, such as the shortage of landfill space and unstabilized ground due to inert properties of plastics. Hence, techniques to recycle the waste plastics to fuel oil or petroleum resources by pyrolysis are worth noticing, in view of decreasing environmental contamination and recycling waste materials.
The pyrolysis technique is used to heat wastes at high temperatures without oxygen or in a low oxygen atmosphere, and then degrade them. Various organic polymer compounds having long carbon chains are reduced and degraded to low molecular weight products in the absence of oxygen. Such products become gas or liquid, according to the length of the carbon chain thereof and the form of the compound, and also, have the similar properties to petroleum compounds, and thus can be reused as combustion fuels.
As wastes usable for the pyrolysis, there are organic chemical materials having carbon chains. In particular, waste plastics mainly used as the chemical polymer wastes are easily subjected to pyrolysis, according to the following: That is, first, the polymer wastes are easily degraded by heat even though degradation conditions and degrees are different. Second, even though hazardous materials are produced, they are generated in a pure form or relatively easily disposed due to a very low air rate. Third, when the polymer wastes are reduced to original low molecular weight materials, expensive raw materials including monomers can be recycled, and as well, combustion gas or oil of high capacity can be recycled.
Therefore, there is proposed a recycling system of waste plastics by pyrolyzing the waste plastics to a gasified material, which is then condensed to obtain pyrolysis oil. However, such a recycling system is disadvantageous in terms of manual introduction of the waste plastics. That is, whenever the waste plastics are fed into a pyrolyzer, the operation of the pyrolyzer is stopped and then the pyrolyzer stands by for predetermined times, which is involved. Hence, working efficiencies are very low and productivity remarkably decreases, too.
Accordingly, there is urgently required a continuous operable device while raw materials are automatically fed therein.
Disclosure of the Invention
Therefore, it is an object of the present invention to alleviate the problems encountered in the related art and to provide a tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst, characterized in that the waste plastics are automatically and continuously fed into a recycling furnace of the tunnel type device in an air-free state, whereby working efficiencies become high and productivity is maximized, and the number of persons required for working is minimized, thus drastically decreasing recycling costs.
To achieve the above object of the present invention, there is provided a tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst, comprising a recycling furnace supported by a plurality of support members in a recycling chamber heated by heat of a hot combustion gas generated from a combustion chamber and indirectly
■heated by the heat of the hot combustion gas generated from the combustion chamber, a feeding hopper vertically mounted to a back upper portion of the recycling furnace to continuously feed the waste plastics into the recycling furnace in a state of air inflow being blocked, a cylinder mounted to a back portion of the recycling furnace to act to compress the waste plastics fed into the recycling furnace through the feeding hopper to one side of the recycling furnace, a piston mounted to an end of a cylinder rod of the cylinder to compress the waste plastics to the one side of the recycling furnace according to a forward movement of the cylinder rod by action of the cylinder, and a plurality of exhaust pipes vertically mounted at regular intervals to an upper portion of the recycling furnace to feed a pyrolysis gas generated from pyrolyzed waste plastics to a condenser.
In addition, an exterior wall of the recycling chamber of the tunnel type device is formed so that an outer surface of the recycling furnace of the recycling chamber is surrounded with fire resistant bricks, clay and a protective iron sheet, to prevent the external emission of heat of the recycling chamber. Further, the tunnel type device comprises a guide member provided to one side of a lower end of each of the exhaust pipes in the recycling furnace to direct the pyrolysis gas into the exhaust pipes.
Furthermore, the tunnel type device comprises an outlet mounted to a lower end of the recycling furnace and opened and shut by a shutter to discharge end wastes. Also, the recycling chamber including the recycling furnace is slantingly mounted so that a position of the feeding hopper is higher than that of the outlet, based on a bottom mounting surface thereof, so as to easily feed and pyrolyze the waste plastics.
Brief Description of the Drawings
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a block diagram schematically showing a tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst, according to the present invention;
FIG. 2 is a front view schematically showing the tunnel type device of the present invention;
FIG. 3 is a perspective view showing a main part of the tunnel type device of the present invention;
FIG. 4 is a front view of FIG. 3; and
FIG. 5 is a side sectional view of the tunnel type device of the present invention.
Best Mode for Carrying Out the Invention
Reference should now be made to the drawings, in which the same reference numerals are used throughout the different drawings to designate the same or similar components.
FIG. 1 is a schematic block diagram of a tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst, according to the present invention. FIG. 2 is a front view of the tunnel type device of the present invention. FIG. 3 is a perspective view of a main part of the tunnel type device of the present invention, which is partially cut away, and FIG. 4 is a front view of FIG. 3. FIG. 5 is a side sectional view of the tunnel type device of the present invention.
The tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst, according to the present invention, includes a recycling furnace 30 supported by a plurality of support members 32 made of marble having high heat resistance, in a recycling chamber 20 heated by heat of a hot combustion gas generated from a combustion chamber 10. Such a recycling furnace 30 is indirectly heated by the heat of the hot combustion gas generated from the combustion chamber 10. As such, an external wall of the recycling chamber 20 is formed so that an outer surface of the recycling furnace 30 of the recycling chamber 20 is surrounded with fire resistant bricks 22, clay 24 and a protective iron sheet 26, to prevent external emission of heat of the recycling chamber 20. Further, the recycling furnace 30 of the recycling chamber 20 has a feeding hopper 34 vertically provided at a back upper portion thereof. The feeding hopper 34 acts to continuously feed the waste plastics into the recycling furnace 30 in the state of air inflow being blocked. In addition, a pair of shutters 36 are mounted to an upper portion of the feeding hopper 34 and thus function for opening and shutting to block air inflow upon feeding the waste plastics.
Also, at a back portion of the recycling furnace 30 of the recycling chamber 20, a cylinder 40 is mounted to act to compress the waste plastics fed into the recycling furnace 30 through the feeding hopper 34 to one side of the recycling furnace 30. A piston 44, which functions to compress the waste plastics to the one side of the recycling furnace 30 according to a forward movement of a cylinder rod 42 by action of the cylinder 40, is mounted to an end of the cylinder rod 42 of the cylinder 40.
Further, a plurality of exhaust pipes 60 are vertically mounted at regular intervals to an upper portion of the recycling furnace 30 of the recycling chamber 20, in which respective exhaust pipes 60 act to feed a pyrolysis gas generated from pyrolyzed waste plastics to a condenser 50. One side of a lower end of each of the exhaust pipes 60 in the recycling furnace 30 is provided with a guide member 70 to direct the pyrolysis gas into the exhaust pipes 60. In addition, a lower end of the recycling furnace 30 is provided with an outlet 38 acting for opening and shutting by a shutter 37 to discharge final wastes.
The recycling chamber 20 including the recycling furnace 30 is slantingly mounted so that a position of the feeding hopper 34 is higher than that of the outlet 38, based on a bottom mounting surface thereof, to easily feed and pyrolyze the waste plastics. In the drawings, the reference numeral 82 designates a heat exchanger, and the numerals 84 and 86 designate a multicyclone and a washing tower, respectively. Additionally, the reference numeral 88 indicates a chimney.
As shown in FIGS. 1 to 5, the waste plastics are fed into the recycling furnace 30 supported by the plurality of the support members 32 made of marble in the recycling chamber 20 provided to the tunnel type device of the present invention, by means of the feeding hopper 34 vertically mounted to the back upper portion of the recycling furnace 30. Such waste plastics are compressed to one side of the recycling furnace 30 while the piston 44 mounted to the end of the cylinder rod 42 is moved forward, according to a forward movement of the cylinder rod 42 by the action of the cylinder 40 mounted to the back portion of the recycling furnace 30.
Simultaneously, heat transferred to the recycling chamber 20 by the hot combustion gas generated from the combustion chamber 10 is indirectly applied around the recycling furnace 30 of the recycling chamber 20. Thereby, the waste plastics are pyrolyzed to obtain a pyrolysis gas, which then ascends and is fed into the plurality of the exhaust pipes 60 vertically mounted at regular intervals to the upper portion of the recycling furnace 30, and finally passes through the condenser 50. While the gas passes through large numbers of tubes of the condenser 50, it is cooled by water of about 40-50°C surrounding the tubes and then condensed. Thusly condensed gas is recycled to oil, whereas the non-condensed gas is returned to the combustion chamber 10 and used as a fuel.
Meanwhile, the exterior wall of the recycling chamber 20 is formed to surround the outer surface of the recycling furnace 30 with the fire resistant bricks 22, clay 24 and the protective iron sheet 26, thereby effectively preventing external emission of heat of the recycling chamber 20. Further, since one side of the lower end of each of the exhaust pipes 60 in the recycling furnace 30 is provided with the guide member 70, the pyrolysis gas flows readily inward the exhaust pipes 60 by means of the guide members 70. In the recycling furnace 30, optimal temperatures required to pyrolyze the waste plastics are preferably about 500°C. Also, the recycling chamber 20 including the recycling furnace 30 is slantingly mounted so that the position of the feeding hopper 34 is higher than that of the outlet 38, based on the bottom mounting surface thereof. Therefore, the waste plastics can be easily and efficiently fed and pyrolyzed.
Heat energy, which is transferred to the inside of the recycling chamber 20 and used to indirectly heat the recycling furnace 30 of the recycling chamber 20, is heat-exchanged through the heat-exchanger 82 connected to the back portion of the recycling chamber 20, followed by passing through the multicyclone 84 and washing in the washing tower 86, and then externally discharged through the chimney 88. Thereby, air pollution can be effectively prevented.
Industrial Applicability
As described hereinbefore, the present invention provides a tunnel type device for continuously feeding water plastics to be recycled to pyrolysis oil in the absence of a catalyst, characterized in that the waste plastics are automatically and continuously fed into a recycling furnace provided to the tunnel type device in an air-free state. Thus, since it is possible to continuously operate the tunnel type device, working efficiencies become high, thus maximizing productivity. Further, the number of persons required for working is minimized, therefore resulting in drastically decreased recycling costs.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

Claims
1. A tunnel type device for continuously feeding waste plastics to be recycled to pyrolysis oil in the absence of a catalyst, comprising: a recycling furnace supported by a plurality of support members in a recycling chamber heated by heat of a hot combustion gas generated from a combustion chamber, and indirectly heated by the heat of the hot combustion gas generated from the combustion chamber; a feeding hopper vertically mounted to a back upper portion of the recycling furnace to continuously feed the waste plastics into the recycling furnace in a state of air inflow being blocked; a cylinder mounted to a back portion of the recycling furnace to act to compress the waste plastics fed into the recycling furnace through the feeding hopper to one side of the recycling furnace; a piston mounted to an end of a cylinder rod of the cylinder to compress the waste plastics to the one side of the recycling furnace according to a forward movement of the cylinder rod by action of the cylinder; and a plurality of exhaust pipes vertically mounted at regular intervals to an upper portion of the recycling furnace to feed a pyrolysis gas generated from pyrolyzed waste plastics to a condenser.
2. The apparatus as defined in claim 1, wherein an exterior wall of the recycling chamber is formed so that an outer surface of the recycling furnace of the recycling chamber is surrounded with fire resistant bricks, clay and a protective iron sheet, to prevent the external emission of heat of the recycling chamber.
3. The apparatus as defined in claim 1, further comprising a guide member provided to one side of a lower end of each of the exhaust pipes in the recycling furnace to direct the pyrolysis gas into the exhaust pipes.
4. The apparatus as defined in claim 1, further comprising an outlet mounted to a lower end of the recycling furnace and opened and shut by a shutter to discharge final wastes.
5. The apparatus as defined in claim 1, wherein the recycling chamber including the recycling furnace is slantingly mounted so that a position of the feeding hopper is higher than that of the outlet, based on a bottom mounting surface thereof, to easily feed and pyrolyze the waste plastics.
PCT/KR2002/001879 2002-07-15 2002-10-08 Serial injection device for tunnel catalyst-free waste plastics pyrolysis oil recovery system Ceased WO2004018592A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002348643A AU2002348643A1 (en) 2002-07-15 2002-10-08 Serial injection device for tunnel catalyst-free waste plastics pyrolysis oil recovery system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2002/41290 2002-07-15
KR10-2002-0041290A KR100462923B1 (en) 2002-07-15 2002-07-15 Serial injection device for waste plastics pyclysis recycle system

Publications (1)

Publication Number Publication Date
WO2004018592A1 true WO2004018592A1 (en) 2004-03-04

Family

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EP1647589A3 (en) * 2004-09-25 2006-05-10 Alpo Co., Ltd. Pyrolysis system for treating waste synthetic highly polymerized compound
WO2006093373A1 (en) * 2005-03-03 2006-09-08 Eos System Co., Ltd. Pyrolysis device for high molecular waste materials
WO2007014489A1 (en) * 2005-08-03 2007-02-08 Weitian Zhang A pyrolysis method for treating waste rubber and plastics and materials containing resins
ES2294964A1 (en) * 2007-04-27 2008-04-01 Sistemas De Reciclaje Y Energia, S.L Plastic recycling system, has reception hopper, and system is provided for introducing plastic in hopper, and system is also provided for introducing plastics and mineral oil in trommel
US7588665B2 (en) * 2005-09-20 2009-09-15 Smith Steven W Apparatus for converting waste products into usable fossil fuel
WO2021087057A1 (en) * 2019-10-31 2021-05-06 Eastman Chemical Company Pyrolysis method and system for recycled waste
WO2021087054A1 (en) * 2019-10-31 2021-05-06 Eastman Chemical Company Pyrolysis method and system for recycled waste
US11319262B2 (en) 2019-10-31 2022-05-03 Eastman Chemical Company Processes and systems for making recycle content hydrocarbons
US11473017B1 (en) * 2021-09-08 2022-10-18 Chevron Phillips Chemical Company Lp Pyrolysis oil reactor and process improvements for enhancing plastics recycling
US11939534B2 (en) 2019-11-07 2024-03-26 Eastman Chemical Company Recycle content alpha olefins and fatty alcohols
US11946000B2 (en) 2019-05-24 2024-04-02 Eastman Chemical Company Blend small amounts of pyoil into a liquid stream processed into a gas cracker
US11945998B2 (en) 2019-10-31 2024-04-02 Eastman Chemical Company Processes and systems for making recycle content hydrocarbons
US11999920B2 (en) 2020-09-14 2024-06-04 Ecolab Usa Inc. Cold flow additives for plastic-derived synthetic feedstock
US12031097B2 (en) 2021-10-14 2024-07-09 Ecolab Usa Inc. Antifouling agents for plastic-derived synthetic feedstocks
US12031091B2 (en) 2019-05-24 2024-07-09 Eastman Chemical Company Recycle content cracked effluent
US12104121B2 (en) 2019-11-07 2024-10-01 Eastman Chemical Company Recycle content mixed esters and solvents
US12195674B2 (en) 2021-09-21 2025-01-14 Eastman Chemical Company Using spent caustic solution from pygas treatment to neutralize halogens from liquified waste plastic
US12304888B2 (en) 2021-03-10 2025-05-20 Ecolab Usa Inc. Stabilizer additives for plastic-derived synthetic feedstock
US12338211B2 (en) 2019-07-29 2025-06-24 Eastman Chemical Company Recycle content (C4)alkanal
US12497467B2 (en) 2020-05-22 2025-12-16 Exxon Mobil Product Solutions Company Recycle content cellulose ester

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Cited By (25)

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EP1647589A3 (en) * 2004-09-25 2006-05-10 Alpo Co., Ltd. Pyrolysis system for treating waste synthetic highly polymerized compound
WO2006093373A1 (en) * 2005-03-03 2006-09-08 Eos System Co., Ltd. Pyrolysis device for high molecular waste materials
WO2007014489A1 (en) * 2005-08-03 2007-02-08 Weitian Zhang A pyrolysis method for treating waste rubber and plastics and materials containing resins
US7588665B2 (en) * 2005-09-20 2009-09-15 Smith Steven W Apparatus for converting waste products into usable fossil fuel
ES2294964B1 (en) * 2007-04-27 2009-04-16 Sistemas De Reciclaje Y Energia, S.L PLASTIC RECYCLING SYSTEM AND PROCESS.
ES2294964A1 (en) * 2007-04-27 2008-04-01 Sistemas De Reciclaje Y Energia, S.L Plastic recycling system, has reception hopper, and system is provided for introducing plastic in hopper, and system is also provided for introducing plastics and mineral oil in trommel
US12031091B2 (en) 2019-05-24 2024-07-09 Eastman Chemical Company Recycle content cracked effluent
US11946000B2 (en) 2019-05-24 2024-04-02 Eastman Chemical Company Blend small amounts of pyoil into a liquid stream processed into a gas cracker
US12338211B2 (en) 2019-07-29 2025-06-24 Eastman Chemical Company Recycle content (C4)alkanal
WO2021087057A1 (en) * 2019-10-31 2021-05-06 Eastman Chemical Company Pyrolysis method and system for recycled waste
WO2021087054A1 (en) * 2019-10-31 2021-05-06 Eastman Chemical Company Pyrolysis method and system for recycled waste
US11319262B2 (en) 2019-10-31 2022-05-03 Eastman Chemical Company Processes and systems for making recycle content hydrocarbons
CN114641555A (en) * 2019-10-31 2022-06-17 伊士曼化工公司 Pyrolysis method and system for recycling waste
US11787754B2 (en) 2019-10-31 2023-10-17 Eastman Chemical Company Processes and systems for making recycle content hydrocarbons
US11945998B2 (en) 2019-10-31 2024-04-02 Eastman Chemical Company Processes and systems for making recycle content hydrocarbons
US12312540B2 (en) 2019-10-31 2025-05-27 Eastman Chemical Company Pyrolysis method and system for recycled waste
US11939534B2 (en) 2019-11-07 2024-03-26 Eastman Chemical Company Recycle content alpha olefins and fatty alcohols
US12104121B2 (en) 2019-11-07 2024-10-01 Eastman Chemical Company Recycle content mixed esters and solvents
US12497467B2 (en) 2020-05-22 2025-12-16 Exxon Mobil Product Solutions Company Recycle content cellulose ester
US11999920B2 (en) 2020-09-14 2024-06-04 Ecolab Usa Inc. Cold flow additives for plastic-derived synthetic feedstock
US12304888B2 (en) 2021-03-10 2025-05-20 Ecolab Usa Inc. Stabilizer additives for plastic-derived synthetic feedstock
US11473017B1 (en) * 2021-09-08 2022-10-18 Chevron Phillips Chemical Company Lp Pyrolysis oil reactor and process improvements for enhancing plastics recycling
US12195674B2 (en) 2021-09-21 2025-01-14 Eastman Chemical Company Using spent caustic solution from pygas treatment to neutralize halogens from liquified waste plastic
US12031097B2 (en) 2021-10-14 2024-07-09 Ecolab Usa Inc. Antifouling agents for plastic-derived synthetic feedstocks
US12503663B2 (en) 2024-04-26 2025-12-23 Ecolab Usa Inc. Cold flow additives for plastic-derived synthetic feedstock

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