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WO2008151363A1 - Appareil et procédé servant à traiter un déchet contenant une matière plastique - Google Patents

Appareil et procédé servant à traiter un déchet contenant une matière plastique Download PDF

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Publication number
WO2008151363A1
WO2008151363A1 PCT/AU2008/000834 AU2008000834W WO2008151363A1 WO 2008151363 A1 WO2008151363 A1 WO 2008151363A1 AU 2008000834 W AU2008000834 W AU 2008000834W WO 2008151363 A1 WO2008151363 A1 WO 2008151363A1
Authority
WO
WIPO (PCT)
Prior art keywords
waste
liquid metal
conveyor device
gas
metal bath
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/AU2008/000834
Other languages
English (en)
Inventor
Martin Löffler
Thomas Kaiser
Siegfried Römer
Richard Schimko
Carlos Ramon Maria Sorentino
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.)
RFT PLASTICS Inc
Original Assignee
RFT PLASTICS Inc
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 RFT PLASTICS Inc filed Critical RFT PLASTICS Inc
Publication of WO2008151363A1 publication Critical patent/WO2008151363A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • 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
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the present invention relates to an apparatus for and a method of a method of obtaining liquid and gaseous organic raw materials from waste containing plastic material by way of thermolysis.
  • EP-A-O 592 057 discloses a process for the pyrolysis of used vehicle tyres, and an apparatus for carrying out the process.
  • the pyrolysis takes place with the exclusion of air and water and is operated under reduced pressure at an operating temperature of 450-550°C, preferably below 500°C.
  • This process can have limited applicability with respect to the types of waste materials which maybe processed, for example, upon thermolysis or pyrolysis some plastic materials there is a tendency to give off large amounts of gas in a short time severely disrupting the efficacy of the overall process.
  • Another common disadvantage of the known methods and apparatus for processing of hydrocarbon containing waste materials is that the resultant product mixture is of a low grade and only contains relatively small amounts of high-grade fractions such as gasoline and kerosene.
  • many of the known processes are batch processes which generally do not easily lend themselves to economical scaling. It is desirable that the present invention provide an apparatus and a method with which it is possible to process a wide variety of plastic wastes which, for example, contain polyethylene, polypropylene or polystyrene.
  • the apparatus and the method are to be such that as far as possible no harmful substances such as for example dioxins are produced in the thermolysis of the plastic material-containing waste.
  • an apparatus having a container which is closed except for inlets and outlets and which in operation is to be filled with a liquid metal bath up to a liquid metal level and which has a gas space above the liquid metal level.
  • the container has a waste feed opening for feeding waste to be treated and a residual material outlet opening for solid waste residues.
  • a substantially horizontally extending waste conveyor device Arranged between the waste feed opening and the residual material outlet opening is a substantially horizontally extending waste conveyor device which is adapted to convey waste, at least in portion-wise manner, beneath the liquid metal level from the waste feed opening to the residual material outlet opening and in that operation to periodically dip the waste which floats up in the liquid metal bath deeper into the liquid metal bath.
  • the apparatus also has a gas feed line for an inert gas, which opens into the gas space, and a gas outlet which is connected to the gas feed line to afford a gas circuit, by way of conduits.
  • a condenser for condensing condensable gas constituents of the gas which is flushed out of the gas space and which is produced by thermolysis or pyrolysis.
  • Opening into the condenser is a carrier liquid feed line by way of which a for example parafins-dissolving carrier liquid can be introduced into the condenser in such a way that for example condensed parafins which are deposited at the condenser walls can be dissolved by the carrier liquid and flushed away.
  • thermolysis products Arranged at the base point of the condenser is a liquid discharge line in order to be able to discharge the carrier liquid together with the thermolysis products dissolved therein.
  • liquid thermolysis products such as for example oils can also be discharged by way of the liquid discharge line.
  • a sacrificial tub is provided for the liquid metal bath, which tub can be replaced without the complete container having to be renewed. That is advantageous because the liquid metal used is preferably liquid tin which results in severe corrosion of other metals.
  • Some of the component parts of the apparatus including the container and the waste conveyor device preferably comprise stainless steel of type 1.43.01.
  • the conveyor device is preferably enclosed by its own casing within the container.
  • the casing extends in a first portion of the conveyor device near the waste feed opening, in part above the liquid metal level, so that its own gas space is formed within the casing.
  • the casing of the conveyor device and thus the conveyor device itself extends beneath the level of the liquid metal.
  • the conveyor device preferably has conveyor elements which are arranged around an at least approximately horizontally extending axis of rotation of the conveyor device.
  • the conveyor elements preferably include rotating blade-like entrainment members which rotate about the axis of rotation and which extend at least approximately as far as the casing of the conveyor device and which preferably go in the proximity of the axis of rotation into a chute plate extending inclinedly relative to the axis of rotation.
  • the chute plate is arranged in such a way that it moves away from an edge of the entrainment members, which is near the casing, to an increasing extent in the conveyor direction, and is also arranged on the flat side of the entrainment member, which leads in the direction of rotation, so that waste material engaged by the entrainment member is pushed in a downward movement of the entrainment member beyond the horizontal by buoyancy forces along the entrainment member in the direction of the axis of rotation of the conveyor device and there encounters the chute plate.
  • the conveyor device preferably has further entrainment plates which extend in the longitudinal direction of the conveyor device in parallel relationship with the axis of rotation and which extend in the radial direction to close to the casing wall. In comparison with the entrainment members however the entrainment plates are substantially shorter in the radial direction.
  • the conveyor device preferably has a plurality of longitudinal portions with a respective entrainment member and a chute.
  • One or two first longitudinal portions of the conveyor device, which are near the waste feed opening, are of a larger diameter than further longitudinal portions, adjoining same, of the conveyor device.
  • the larger diameter of the conveyor device in its initial region also results in a casing of larger diameter which - as already mentioned - projects upwardly at least in part beyond the liquid metal level. That part of the casing of the conveyor device has its own gas space for receiving the pyrolysis gases which are almost abruptly produced when the waste to be treated dips into the liquid metal bath.
  • a waste feed means which passes through an outer upper wall of the container and which opens from above into the casing of the conveyor device.
  • the casing of the conveyor device At the end of the conveyor device in the proximity of the residual material outlet the casing of the conveyor device, on its top side, beneath the liquid metal level, also has an opening which opens into a discharge chamber whose flat bottom extends precisely at the level of the liquid metal surface.
  • solid residual materials of the waste can float up to the level of the liquid metal.
  • a rotating bladed wheel Preferably arranged in the discharge chamber is a rotating bladed wheel having blades which extend as far as the bottom of the discharge chamber and the edge of the discharge chamber.
  • Those blades are of such a configuration that they pass uniformly over an entry opening of the discharge chamber, which opening is in communication with the outlet opening of the casing of the conveyor device at its end, and in so doing entrain solid residues which are floating on the surface of the liquid metal.
  • a fall opening is arranged in the bottom of the discharge chamber, on the side remote from the entry opening, through which residual materials transported by the blades of the bladed wheel can drop out of the discharge chamber.
  • the individual longitudinal portions of the conveyor device are preferably fixedly connected together so that they can rotate jointly at the same speed about a common axis of rotation. Alternatively it can also be provided that individual longitudinal portions of the conveyor device can move at different speeds of rotation.
  • electrical heating elements are provided for heating the liquid metal bath.
  • tubular heating element receiving means which are accessible from an upper cover of the container and which extend to below the level of the liquid metal are provided for receiving the electrical heating elements.
  • the arrangement has a plurality of those heating element receiving means so that the liquid metal can be heated with a plurality of electrical heating elements.
  • the arrangement of the heating element receiving means, extending from an upper cover of the container has the advantage that no liquid metal can escape to the exterior from the container through the heating element receiving means, in the event of damage to the heating element receiving means.
  • the method according to the invention for the treatment of plastic material- containing waste comprises the following steps: introducing waste into a container containing a liquid metal bath and a gas atmosphere thereabove; immersing the waste into the liquid metal bath; conveying the waste within the liquid metal bath and thereby producing thermolysis gas and solid residue materials; flushing the gas atmosphere with an inert gas; separating the thermolysis gas from the inert gas in a condenser; dissolving condensed pyrolysis gas in a carrier liquid; draining the carrier liquid and liquid condensed thermolysis products from the condenser, and removing remaining solid materials from the liquid metal bath.
  • the method is carried out continuously.
  • an oil or tuluol is used as the carrier liquid.
  • lime is added to the liquid metal bath for binding chlorine which is produced in the course of the thermolysis operation.
  • the method is carried out at temperatures of between 450°C and 500°C.
  • tin is entirely or predominantly used as the metal for the liquid metal bath.
  • the method is carried out in such a way that the residence time of waste to be treated in the liquid metal bath is about two minutes.
  • the waste to be treated is conveyed in an at least approximately horizontal direction in the liquid metal bath.
  • Figure Ia shows an external top view of the apparatus for the treatment of waste
  • Figure Ib shows an external bottom view of the apparatus for the treatment of waste
  • Figure 2 shows a section through the apparatus for the treatment of waste
  • Figure 3 shows a view of the apparatus with the cover removed
  • Figures 4a, 4b and 4c show perspective views of the conveyor device from the outside
  • Figure 5 shows a perspective view of rotating conveyor elements of the conveyor device
  • Figure 6 shows a perspective view of a bladed wheel for the discharge of solid waste residues from a discharge chamber of the apparatus.
  • the apparatus 10 for the treatment of waste materials has a container 12 with a tub-like lower portion 14 and a three-part cover 16.
  • the apparatus has a first electric drive 18 for driving rotating conveyor elements in the interior of the container.
  • the apparatus has a second electric drive 20 for driving a bladed wheel for the discharge of solid waste residues.
  • a central portion 22 of the three-part cover 16 has a total often heating element receiving means 24 which project from the cover 16 in the direction of the bottom of the tub-shaped lower portion 14 of the container 12.
  • a respective electrical heating element can be introduced into each of the heating element receiving means 24.
  • Figure 2 shows a view in longitudinal section through the container 12 and discloses a conveyor device 30 which is arranged in the container, as an external view.
  • the conveyor device 30 has a waste feed opening which is connected to a waste feed line 32.
  • a residual material outlet opening which is connected by way of a short pipe connection 34 to a discharge chamber 36 of the apparatus 10.
  • the conveyor device 30 is enclosed by a casing 40 disposed in the container 12.
  • FIG. 3 shows the apparatus for the treatment of waste with the cover removed. That means that the conveyor device 30 in the interior of the tub-shaped lower portion
  • Figures 4a, b and c illustrate the complete conveyor device 30 including the first electric drive 18 and the discharge chamber 38. Connected to the casing 40 of the conveyor device are gas discharge lines 42 which serve for the discharge of vapours and gases produced as a consequence of the thermolysis operation. Figure 4a also clearly shows the waste feed opening 44 for the feed of waste to be treated, to the conveyor device 30.
  • FIG. 5 shows the rotating conveyor elements 50 disposed in the interior of the casing 40 of the conveyor device 30.
  • the conveyor elements 50 have a total of four longitudinal portions of which two longitudinal elements 52 which are near the waste feed opening are of a larger diameter than four other longitudinal portions 54.
  • Each longitudinal portion 52 or 54 of the rotating conveyor elements 50 has an entrainment member 56 which extends as far as the casing of the conveyor device 30 and which in the proximity of an axis of rotation of the rotating conveyor elements 50 goes into a chute 58, the chute plate bottom 60 of which extends inclinedly with respect to the axis of rotation.
  • the rotating conveyor elements 50 rotate in a counter-clockwise direction in relation to Figure 5. Waste material is engaged by a respective entrainment member 56 and when an entrainment member 56 moves downwardly in its downward movement beyond the horizontal, as a result of buoyancy forces, it slides in the direction of the chute 58. As a consequence of the chute bottom 60 extending inclinedly with respect to the axis of rotation of the rotating conveyor elements 50 the upwardly floating waste substances are conveyed in the conveyor direction into the next longitudinal portion of the rotating conveyor elements 50 until the rotating waste materials reach the end of the rotating conveyor elements, which is shown at top left in relation to Figure 5.
  • the rotating conveyor elements 50 have a plurality of entrainment plates 62 which project from the inside as far as the casing 40 of the conveyor device 30.
  • the rotating conveyor elements 50 instead of the entrainment plates, have a plurality of shafts with freely rotating toothed wheels 64 which are arranged thereon and which have an axis of rotation extending parallel to the axis of rotation of the rotating conveyor elements and which project to close to the casing 40 of the conveyor device 30.
  • the wheels 64 are suitable for comminuting solid waste constituents which pass between the casing 40 of the conveyor device 30 and the wheels 64.
  • FIG. 6 shows a portion 70 of the cover 16, which covers the discharge chamber 38.
  • Figure 6 shows the bladed wheel 46 and the second electric drive 20 for driving the bladed wheel 46.
  • the bladed wheel 46 is arranged in such a way that it passes over the bottom 72 of the discharge chamber 38.
  • the bottom 72 of the discharge chamber 38 is disposed exactly at the level of the surface of the liquid metal in the container 12.
  • Upwardly floating solid waste residue materials which issue from the conveyor device 30 by way of the connection 36 therefrom float in the entry opening of the discharge chamber 38 on the surface of the liquid metal bath and can thus be engaged by the blades 48 of the bladed wheel 46 when the bladed wheel 46 rotates.
  • the discharge chamber 38 is of a round configuration in plan, the diameter thereof corresponding to the width of the blades 48 of the bladed wheel 46.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention concerne un appareil et un procédé servant à traiter des déchets contenant des matières plastiques par pyrolyse. Le procédé consiste à décomposer de façon pyrolytique par thermolyse les déchets contenant des matières plastiques pour obtenir des matières premières brutes organiques liquides et gazeuses utiles. De préférence, le procédé est effectué en continu.
PCT/AU2008/000834 2007-06-12 2008-06-12 Appareil et procédé servant à traiter un déchet contenant une matière plastique Ceased WO2008151363A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710027629 DE102007027629A1 (de) 2007-06-12 2007-06-12 Vorrichtung und Verfahren zum Behandeln von Kunststoff enthaltenden Abfall
DE102007027629.1 2007-06-12

Publications (1)

Publication Number Publication Date
WO2008151363A1 true WO2008151363A1 (fr) 2008-12-18

Family

ID=39986160

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2008/000834 Ceased WO2008151363A1 (fr) 2007-06-12 2008-06-12 Appareil et procédé servant à traiter un déchet contenant une matière plastique

Country Status (4)

Country Link
US (1) US20090014311A1 (fr)
AU (1) AU2008202608A1 (fr)
DE (1) DE102007027629A1 (fr)
WO (1) WO2008151363A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014106650A2 (fr) * 2013-01-03 2014-07-10 EZER, Argun Procédés et dispositifs de dépolymérisation d'une matière première hydrocarbonée
EP3234071B1 (fr) 2014-12-17 2021-02-24 Pilkington Group Limited Four
GB202104712D0 (en) 2021-04-01 2021-05-19 Riedewald Frank Process and system for the recycling of composite materials, mixed and pure waste plastics.
CN117264645B (zh) * 2023-11-07 2024-03-22 湖南奔骥环保能源科技有限责任公司 一种连续式污泥废胎废塑处理装置及工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770419A (en) * 1971-07-19 1973-11-06 Lewis E Pyrolysis process system for recycling of refuse
US5693188A (en) * 1994-06-27 1997-12-02 Unique Tire Recycling (Canada) Inc. Hydrocarbon thermal processing apparatus
US6051110A (en) * 1998-04-30 2000-04-18 Dell'orfano; William Thermolytic distillation of carbonaceous material
AU2005227358A1 (en) * 2005-01-04 2006-07-20 Carlos M.R. Sorentino Continuous thermolytic recycling of plastic and rubber wastes
US20070213572A1 (en) * 2003-12-11 2007-09-13 Zbigniew Tokarz Transverse-flow pyrocatalytic reactor for conversion of waste plastic material and scrap rubber

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1681808A (en) * 1928-08-21 op london
US1601777A (en) * 1926-10-05 Method and apparatus eos
US1606666A (en) * 1923-06-04 1926-11-09 Thermal Ind & Chem Tic Res Co Apparatus for the heat treatment of materials by means of molten metal
US4374499A (en) * 1977-02-25 1983-02-22 Board Of Control Of Michigan Technological University Treatment during transport of solid waste
JPS5665084A (en) 1979-08-30 1981-06-02 Jensen Frank C Thermal decomposition and device
DE3817437A1 (de) * 1988-05-21 1989-11-30 Asea Brown Boveri Verfahren zum aufarbeiten von abfallmaterial
DE4234385A1 (de) 1992-10-06 1994-04-07 Formex Trading Gmbh Verfahren zur Pyrolyse von organischen Stoffen
DE69707361T2 (de) * 1996-06-06 2002-05-02 Mitsubishi Heavy Industries, Ltd. Verfahren und Apparat zur Konvertierung von Kunststoffabfällen in Öl
SK279397B6 (sk) * 1997-03-03 1998-11-04 Ivan Ma�Ar Spôsob termálnej a/alebo katalytickej dekompozície

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770419A (en) * 1971-07-19 1973-11-06 Lewis E Pyrolysis process system for recycling of refuse
US5693188A (en) * 1994-06-27 1997-12-02 Unique Tire Recycling (Canada) Inc. Hydrocarbon thermal processing apparatus
US6051110A (en) * 1998-04-30 2000-04-18 Dell'orfano; William Thermolytic distillation of carbonaceous material
US20070213572A1 (en) * 2003-12-11 2007-09-13 Zbigniew Tokarz Transverse-flow pyrocatalytic reactor for conversion of waste plastic material and scrap rubber
AU2005227358A1 (en) * 2005-01-04 2006-07-20 Carlos M.R. Sorentino Continuous thermolytic recycling of plastic and rubber wastes

Also Published As

Publication number Publication date
AU2008202608A1 (en) 2009-01-22
US20090014311A1 (en) 2009-01-15
DE102007027629A1 (de) 2008-12-18

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