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WO2004037949A1 - Appareil de pyrolyse de pneus laceres - Google Patents

Appareil de pyrolyse de pneus laceres Download PDF

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Publication number
WO2004037949A1
WO2004037949A1 PCT/HU2003/000087 HU0300087W WO2004037949A1 WO 2004037949 A1 WO2004037949 A1 WO 2004037949A1 HU 0300087 W HU0300087 W HU 0300087W WO 2004037949 A1 WO2004037949 A1 WO 2004037949A1
Authority
WO
WIPO (PCT)
Prior art keywords
reactor
valve
slide
shredded
wall
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/HU2003/000087
Other languages
English (en)
Inventor
István LEKRINSZKI
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.)
Individual
Original Assignee
Individual
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
Priority claimed from HU0200305U external-priority patent/HU0200305V0/hu
Priority claimed from HU0300207U external-priority patent/HU2683U/hu
Application filed by Individual filed Critical Individual
Priority to AU2003280029A priority Critical patent/AU2003280029A1/en
Publication of WO2004037949A1 publication Critical patent/WO2004037949A1/fr
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
    • 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
    • C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
    • C10B47/18—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge
    • 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
    • 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 invention relates to an apparatus for the pyrolysis of shredded tyres.
  • Prior art pyrolysis reactors are suitable for the processing of whole or shredded tyres.
  • the cost of shredding is eliminated, but the reactor must be very large, and in addition it is very complicated to charge and discharge the reactor. This problem can be avoided if shredded material is used. In this case, however, the shredding costs must not make the process uneconomic.
  • WO 03/029384 A1 comprises a reactor, an external casing at least partly surrounding the reactor, a combustion space between the external casing and the reactor, a rotatable agitating member arranged within the reactor, a discharging mechanism arranged at the bottom of the reactor, and a charging mechanism arranged at the top of the reactor, wherein the charging mechanism comprises an upper slide-valve and a lower slide-valve.
  • the double locking of the charging mechanism is advantageous, because it simply ensures the feed-in of the shredded tyres (upper slide-valve) and protection against gas leakage (lower slide-valve).
  • the burner heads are usually directed tangentially to the cylindrical reactor. Using this design, however, because the introduced heat is not directed straight to the reactor, the efficiency of the apparatus is lower. Furthermore, there is no solution for the problem of uniformly guiding and distributing hot gases introduced by the burner heads over the external wall of the reactor.
  • the inventive idea is that if proper cooling is applied above the lower slide-valve of the charging mechanism, and furthermore, if we make sure by appropriate guiding that pieces falling down during the charging process do not contact the high temperature sections of the lower slide-valve, the object outlined above can be achieved.
  • the invention is an apparatus for pyrolysis of shredded tyres, the apparatus comprising a reactor, an external casing at least partly surrounding the reactor, a combustion space between the external casing and the reactor, a rotatable agitating member arranged within the reactor, a discharging mechanism arranged at the bottom of the reactor, and a charging mechanism arranged at the top of the reactor, the charging mechanism comprising an upper slide-valve and a lower slide-valve.
  • the charging mechanism is equipped with a liquid cooling above the lower slide-valve, and the lower slide-valve has a transfer opening with a diameter larger than that of a pipe end cross section leading the shredded tyre into the transfer opening.
  • 200 °C can be maintained in the section between the two slide-valves, and less than 100 °C above the upper slide-valve.
  • the narrowed cross section of the feed-in pipe end ensures that the rubber pieces do not fall on the closing surfaces of the lower slide-valve.
  • the liquid cooling is preferably formed as a circulated water cooling and is arranged below a closing member of the upper slide-valve at least on a portion of the external surface of a housing of the upper slide-valve.
  • the pipe end cross section leading the shredded tyre into the transfer opening is preferably formed by a lower flange of a guiding ring narrowing down conically.
  • This guiding ring can be simply produced, and easily secured by welding above the lower slide-valve.
  • a particularly preferred embodiment of the invention is characterised in that the discharging mechanism has a closing member of a truncated cone shape narrowing upwards, which in its closed position fitting into a complementary opening formed in a bottom part of the reactor has a top surface aligned with an inner surface of the bottom part.
  • This structure will ensure that the pieces of wire in the shredded tyres do not get tangled up and block the discharging opening, thereby preventing discharge.
  • a circular sealing for preventing escape of gases from the reactor is arranged at the cone-surface of the closing member.
  • heat deflection wall(s) are arranged in the combustion space for directing the heat of burner head(s) to the wall of the reactor.
  • Heat deflection plates arranged along a rising spiral line on the external reactor wall can be used expediently to uniformly distribute and guide the hot gases emitted by the burner heads.
  • the spiral line has a preferred elevation angle of 10 to 30 degrees.
  • the agitating member preferably comprises a vertical shaft, a horizontal lower support bar and a horizontal upper support bar both secured to said vertical shaft, and two opposite spiral plate ribbons arranged in a rising spiral way along the wall of the reactor, each of said spiral plate ribbons connecting an end of the lower support bar with an end of the upper support bar.
  • the elevation angle of the spiral plate ribbons is preferably less than 30 degrees, and their distance from the inner wall of the reactor is at least 10 mm.
  • Fig.1 is a schematic view partly in cross-section of a pyrolysis apparatus according to the invention
  • Fig. 2 is a view of an inventive charging mechanism partial in cross- section
  • Fig. 3 is a schematic diagram partly in cross-section of a discharging mechanism according to the invention.
  • Fig. 4 is a sectional view taken along plane A-A of Fig. 1
  • Figs. 5A and 5B are side view and bottom view drawings depicting the location of heat deflecting plates and
  • Fig. 6 is a schematic three-dimensional view of an agitating member according to the invention.
  • the pyrolysis apparatus shown in Fig. 1 comprises a reactor 10 known per se, an external casing 11 at least partly surrounding reactor 10, a combustion space 12 between the external casing 11 and the reactor 10, an agitating member 13 driven by a motor 16 and arranged in a way to allow rotation in the reactor 10, a discharging mechanism 14 at the bottom of the reactor 10, and a charging mechanism 15 mounted at the top of the reactor 10.
  • the charging mechanism 15 comprises a motor-driven upper slide-valve 21 and lower slide-valve 22. Above the lower slide-valve 22, the charging mechanism 15 is fitted with fluid cooling, in a way to be described later on.
  • the discharging mechanism 14 is connected to a discharge opening 30 formed on a bottom plate 17 of the reactor 10.
  • burner heads 40 supplying heat Fig. 4 are directed, and their heat is tangentially guided to the wall of the reactor 10 by heat deflection walls 18.
  • Fig. 2 shows the charging* mechanism 15 in details.
  • the upper slide-valve 21 preferably includes a closing blade 29, which enables the feed of the shredded tyres from the feeding tank 25.
  • the closing member of the lower slide-valve 22 is a wedge-shaped closing tongue 26 preventing gas leakage, which closing tongue fits tightly into the complementary housing of the slide-valve 22.
  • the transfer opening 24 of the slide-valve 22 is fully opened.
  • the transfer opening 24 is depicted by dashed lines in Fig. 2.
  • the charging mechanism 15 above the lower slide-valve 22 is fitted with a liquid cooling.
  • a liquid cooling can be preferably implemented by cooling water circulated through an inlet stub 28B and an outlet stub 28K, and consequently, the cooling effect can be achieved for example in the section below the closing blade 29 of the upper slide-valve 21 housing by external circulation, i.e. by means of a cooled housing 28.
  • the cooling water can be circulated in a way known perse.
  • the wedge shaped closing tongue 26 performs closure by tightly fitting into a finely machined surface in the housing of the slide-valve 22. It is required for the appropriate operation of the charging mechanism 15 that the lower slide- valve 22 preventing the leakage of a high temperature gas ensures an appropriate gas-tight closure. To do so, it is necessary to make sure that at the time of charging, shredded rubber falling from the upper slide-valve 21 into the transfer opening 24 of the lower slide-valve 22 does not fall onto the closing surfaces of the lower slide-valve 22, because in this case the rubber burns on the closing surfaces, thereby deteriorating and in extreme cases even preventing gas-tight closure.
  • the transfer opening 24 of the lower slide-valve 22 is of a larger diameter than that of a pipe end cross section 23 ending into the transfer opening 24 for introducing the shredded tyre into the transfer opening 24.
  • This pipe end cross section 23 is preferably formed by a lower flange of a guiding ring 27 narrowing downwards and welded above the closing tongue 26 to the housing of the lower slide-valve 22.
  • the discharging mechanism 14 has a closing member 31 of a truncated cone shape narrowing upwards, which - in its closed position fitting into the complementary opening 30 formed in the bottom part of the reactor 10 - has a top surface 31' in the same plain as the inner surface 17' of the bottom plate 17. This structure prevents the wire pieces of the shredded tyres to get tangled in a way so as to prevent discharge at the discharge opening 30.
  • the closing member 31 is arranged on a lever 33 that can be rotated around a shaft 34.
  • a round or circular sealing 32 is arranged on the external conical surface of the closing member 31 to prevent the outflow of the gases from the reactor 10.
  • the closing member 31 of truncated cone shape can be divided in two parts in the depicted way, and the soft flexible sealing 32 can be fitted between the matching disk-shaped parts in a way that an axial displacement against one another is ensured. In this way, a compression of the two parts provides a perfect seal upon closure.
  • the cost efficiency of heating in an enclosed space i.e. pyrolysis is determined basically by the amount of energy input.
  • This energy input is defined by two processing steps: the energy demand of shredding prior to pyrolysis and the energy demand of heating.
  • the apparatus according to the invention is suitable even for processing shreds of an 80 x 120 mm size on average. This size can be achieved already in a single shredding phase, consequently no subsequent shredding is required, and this improves the cost efficiency of the process.
  • the two burner heads 40 ending tangentially in the combustion space supply the heat input required for the pyrolysis.
  • the heat deflection walls 18 arranged in the combustion space guide the heat of the burner heads 40 tangentially to the wall of the reactor 10, thereby greatly improving the efficiency of the apparatus.
  • a further substantial improvement of the efficiency can be achieved by fixing heat deflection .plates 19 in a spirally rising arrangement on the external wall of the reactor 10 - which is preferably of a conic design at its bottom part - as shown in Fig. 1 , 5A and 5B. According to our experiments, it is advantageous if the spiral line has an elevation angle of 10 to 30 degrees.
  • the heat deflection plates 19 are preferably made of the same material as that of the reactor 10. By means of the heat deflection plates 19, the heat transfer surface is many times larger, and a more uniform distribution of the heat input is ensured.
  • Fig. 6 shows an example embodiment of the agitating member 13, which includes a vertical shaft 50, a horizontal lower support bar 51 and a horizontal upper support bar 52 both fixed to vertical shaft 50, as well as two spiral plate ribbons 53, 54 each arranged raising upwards along the wall of the reactor 10, and each connecting one end of the lower support bar 51 with one end of the upper support bar 52.
  • the oppositely arranged spiral plate ribbons 53, 54 are preferably made of flat steel.
  • the function of the agitating member 13 is mixing the shredded rubber gently, and at the same time providing good heat transfer. According to our experiments, this function can be ensured by the above described ribbon agitator in the most advantageous way if the elevation angle of the spiral plate ribbons 53, 54 is less than 30 degrees, and their distance from the inner wall of the reactor 10 is at least 10 mm.
  • the lower support bar 51 is preferably of a flat design, and its angle of inclination as against the plane of the bottom plate 17 is 10 to 20 degrees, and its distance from the bottom plate 17 is not more than 5 mm. Such design of the lower support bar 51 is advantageous for preventing the formation of wire bundles on the bottom plate 17.
  • the fluid cooling can be for example implemented in a different way, a different design of the reactor or casing can be applied or the number of burner heads and/or heat deflection walls may be other than two.
  • the casing may fully enclose the reactor. Instead of the narrowing ring, a different similar solution implementing an appropriate inlet pipe end cross section may be applied.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Processing Of Solid Wastes (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

L'invention concerne un appareil de pyrolyse de pneus lacérés. Cet appareil comprend un réacteur (10), un logement extérieur qui entoure au moins partiellement ce réacteur (10), un espace de combustion ménagé entre le logement extérieur et le réacteur (10), un agitateur rotatif disposé dans le réacteur (10), un mécanisme d'évacuation ménagé à la base du réacteur (10), ainsi qu'un mécanisme de chargement qui est disposé au sommet du réacteur (10) et comprend un distributeur à tiroir supérieur (21) ainsi qu'un distributeur à tiroir inférieur (22). Selon l'invention, ce mécanisme de chargement est pourvu d'un système de refroidissement à liquide situé au-dessus dudit distributeur à tiroir inférieur (22), et ce distributeur à tiroir inférieur (22) comporte une ouverture de transfert (24) qui présente un diamètre supérieur à celui d'une section transversale terminale de conduit (23) menant les pneus lacérés vers l'ouverture de transfert (24).
PCT/HU2003/000087 2002-10-28 2003-10-28 Appareil de pyrolyse de pneus laceres Ceased WO2004037949A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003280029A AU2003280029A1 (en) 2002-10-28 2003-10-28 Apparatus for pyrolysis of shredded tyres

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
HU0200305U HU0200305V0 (en) 2002-10-28 2002-10-28 Equipment for pyrolisis of choped tyres
HUU0200305 2002-10-28
HUU0300207 2003-08-08
HU0300207U HU2683U (en) 2003-08-08 2003-08-08 Equipment for pyrolisis of choped tyres

Publications (1)

Publication Number Publication Date
WO2004037949A1 true WO2004037949A1 (fr) 2004-05-06

Family

ID=32178931

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU2003/000087 Ceased WO2004037949A1 (fr) 2002-10-28 2003-10-28 Appareil de pyrolyse de pneus laceres

Country Status (2)

Country Link
AU (1) AU2003280029A1 (fr)
WO (1) WO2004037949A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005021685A1 (fr) * 2003-08-27 2005-03-10 S.C. Pyroinvest S.A. Procede et installation de craquage thermique utilises pour la decomposition de dechets composes de caoutchouc et de matieres plastiques
WO2006039764A1 (fr) * 2004-10-14 2006-04-20 'ekoprocess' Ad Procede et equipement de pyrolyse de pneus entiers
WO2006056818A1 (fr) 2004-11-26 2006-06-01 New Energy Kft. Dispositif permettant d'effectuer la pyrolyse de copeaux de caoutchouc et de separer les produits recuperes
WO2010088878A3 (fr) * 2009-02-05 2010-11-25 Eurotherm Technologies Ag Dispositif en forme de réacteur de thermolyse et procédé pour faire fonctionner un tel dispositif pour la décomposition thermique de déchets
WO2014090574A1 (fr) * 2012-12-13 2014-06-19 Qinetiq Limited Système de traitement thermique comportant un agencement de vis sans fin et son procédé d'utilisation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423688A (en) * 1982-04-21 1984-01-03 General Motors Corporation Brush feeder for disposal of thermoplastic waste in a fluidized bed reactor
DE19630564A1 (de) * 1996-07-19 1998-01-22 Bos Berlin Oberspree Sondermas Vorrichtung zum Einbringen von zu verbrennendem oder pyrolytisch umzusetzendem Gut
WO1999008849A1 (fr) * 1997-08-19 1999-02-25 Nylander Per Ivar Appareil de recyclage de pneus usages en caoutchouc et d'autres produits en matieres polymeres au moyen de pyrolyses effectuees en l'absence d'oxygene dans un systeme connecte a fonctionnement continu
HU2291U (en) * 2001-10-02 2002-05-28 Ferenc Czako Pirtolisating apparatus for processing coarse chips produced from plastic and rubber waste

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423688A (en) * 1982-04-21 1984-01-03 General Motors Corporation Brush feeder for disposal of thermoplastic waste in a fluidized bed reactor
DE19630564A1 (de) * 1996-07-19 1998-01-22 Bos Berlin Oberspree Sondermas Vorrichtung zum Einbringen von zu verbrennendem oder pyrolytisch umzusetzendem Gut
WO1999008849A1 (fr) * 1997-08-19 1999-02-25 Nylander Per Ivar Appareil de recyclage de pneus usages en caoutchouc et d'autres produits en matieres polymeres au moyen de pyrolyses effectuees en l'absence d'oxygene dans un systeme connecte a fonctionnement continu
HU2291U (en) * 2001-10-02 2002-05-28 Ferenc Czako Pirtolisating apparatus for processing coarse chips produced from plastic and rubber waste
WO2003029384A1 (fr) * 2001-10-02 2003-04-10 Zoltan Szinay Appareil de pyrolyse permettant de traiter des granules grossiers de dechets de plastique et de caoutchouc

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005021685A1 (fr) * 2003-08-27 2005-03-10 S.C. Pyroinvest S.A. Procede et installation de craquage thermique utilises pour la decomposition de dechets composes de caoutchouc et de matieres plastiques
WO2006039764A1 (fr) * 2004-10-14 2006-04-20 'ekoprocess' Ad Procede et equipement de pyrolyse de pneus entiers
AU2004324028B2 (en) * 2004-10-14 2009-11-19 "Ekoprocess" Ad Method and equipment for whole tyre pyrolysis
WO2006056818A1 (fr) 2004-11-26 2006-06-01 New Energy Kft. Dispositif permettant d'effectuer la pyrolyse de copeaux de caoutchouc et de separer les produits recuperes
WO2010088878A3 (fr) * 2009-02-05 2010-11-25 Eurotherm Technologies Ag Dispositif en forme de réacteur de thermolyse et procédé pour faire fonctionner un tel dispositif pour la décomposition thermique de déchets
WO2014090574A1 (fr) * 2012-12-13 2014-06-19 Qinetiq Limited Système de traitement thermique comportant un agencement de vis sans fin et son procédé d'utilisation

Also Published As

Publication number Publication date
AU2003280029A1 (en) 2004-05-13

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