Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
  • B29B17/02—Separating plastics from other materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
  • B29B17/04—Disintegrating plastics, e.g. by milling
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
  • B29B17/04—Disintegrating plastics, e.g. by milling
  • B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/44—Carbon
  • C09C1/48—Carbon black
  • C09C1/482—Preparation from used rubber products, e.g. tyres
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/44—Carbon
  • C09C1/48—Carbon black
  • C09C1/487—Separation; Recovery
• • 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
  • C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
• • 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
  • C10B53/06—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of oil shale and/or or bituminous rocks
• • 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
  • C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
  • C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
• • 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
  • C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
  • C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
  • C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
  • B29B17/04—Disintegrating plastics, e.g. by milling
  • B29B2017/0424—Specific disintegrating techniques; devices therefor
  • B29B2017/0468—Crushing, i.e. disintegrating into small particles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
  • B29B17/04—Disintegrating plastics, e.g. by milling
  • B29B2017/0424—Specific disintegrating techniques; devices therefor
  • B29B2017/0496—Pyrolysing the materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2030/00—Pneumatic or solid tyres or parts thereof
• • 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
  • C10B47/44—Other processes in ovens with mechanical conveying means with conveyor-screws
• • 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
• • 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
  • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
• • 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 invention relates to the field of processing of raw materials from rubber-containing products and can be used in the disposal of worn-out tires or other rubber products with the production of carbon-containing material and other products.
• Utilization of secondary raw materials is an important direction for reducing environmental pollution and a source of secondary raw materials for new production.
• a significant source of such raw materials are rubber products, including worn tires, make up about 90% of the total volume of this type of secondary raw materials.
• an environmentally important and economically relevant problem is the creation of an efficient processing technology in which a carbon-containing material suitable for recycling in the production of new car tires can be obtained from the solid pyrolysis residue.
• a known method of extracting soot and hydrocarbons from used tires comprising splitting the tires into fragments less than 1, 5 inches; pyrolysis of fragments in a pyrolysis reaction vessel at a temperature of 750 to 1800 degrees Fahrenheit and in oxygen-limited hydrocarbon vapors at a pressure of 1 to 20 PSIA for 90 minutes to obtain a solid phase and vapor phase; obtaining a separate high-boiling condensate process stream from a portion of said vapor phase in said reaction vessel; distillation of a portion of said condensate back to said fragments; fractionation of the second part of the specified vapor phase to obtain pyrolysis oil and gas; processing the solid phase after it leaves the reaction vessel for pyrolysis includes: crushing in a jet mill with a stream of supplied air; passing an air stream leaving the mill through a mechanical separator to obtain a waste stream of waste particles and an air stream containing soot particles; passing an air stream with soot particles through a cyclone separator to remove 80-90% of relatively large so
• a known method of manufacturing soot and hydrocarbons from worn tires including: cutting tires into fragments; pyrolysis of fragments in a pyrolysis reaction vessel at a temperature and pressure and reaction time sufficient for the fragments to dissociate into a vapor phase and a solid phase; recycling part of the solid phase back to the reactor; the specified stage of pyrolysis, including indirect, internal heating of the fragments in the reaction vessel with molten salt; obtaining carbon black from a solid phase; and processing said vapor phase to produce hydrocarbons ["Process for recovering carbon black and hydrocarbons from used tires” US4284616A (INTENCO INC) (US) C01B31 / 02; C01B31 / 00; C09C1 / 48; 08/18/1981] [2].
• a disadvantage of the known methods is that the carbon-containing material obtained during processing has a low surface activity and cannot be used as a filler in the manufacture of new tires.
• the closest in purpose, technical essence and the achieved result is a method of producing carbon-containing material from recycled tires and / or rubber products, including:
• the disadvantage of this method is that the obtained carbon-containing material has a low surface activity and contains a large amount of impurities, which excludes the use of the obtained carbon-containing material as a filler in the production of new car tires, as it will reduce their strength and performance.
• the basis of the present invention is the task of creating such a method of processing recycled tires and / or rubber products, application which would allow eliminating harmful impurities, increase the activity of the surface of the obtained carbon-containing material, which will allow using the obtained carbon-containing material as a filler in the production of new car tires.
• a coke formation inhibitor is introduced into it, in an amount of 3-20% by weight of the mixture, consisting of a solid component, which is any combination of thermoplastic linear polymers from the group: polyethylene, polypropylene, polyethylene terephthalate, polystyrene, and the liquid component - polymethylsiloxane , in an amount of 0.5 - 1.0% by weight of the inhibitor, charge pyrolysis in the reactor is carried out at a temperature of from 350 ° C in the main working zone to 600 ° C at the outlet of the reactor;
• metal removal from the crushed solid residue is carried out to a metal content of not more than 0.1% of the total mass of the solid residue, then processing and activation of the solid residue by superheated steam at a temperature of 250-350 ° C in a steam chamber are performed and the activated solid residue is ground in a vortex mill;
• a two-stage classification of the solid residue is carried out: on the air-passage separator, from which the fine fraction is sent to a further fine classification in the electro-mass classifier, and the large fraction is screened, sent to the hopper, and then to the thermal furnace, where the residual carbon is removed and an additional target product - a mineral component or for re-grinding into a vortex mill, and the separation of the fine fraction of the solid residue is carried out in the electro-mass classifier into the F1 fraction, less than 45 ckm (Fl ⁇ 45 ckm), and the F2 fraction, more than 45 rkm (F2> 45 ckm);
• a method of obtaining a carbon-containing material from recycled tires and / or rubber products is as follows.
• the metal side rings are removed from the disposed tires on the side ring removal machine 1, which eliminates the cost of crushing and removing the fragmented parts.
• an industrial shredder can be used as a grinder.
• the solid component of the coke formation inhibitor is fed through the batcher 4 to the grinder 2 from the hopper 3.
• the crushed rubber-containing raw materials and the solid component of the coke formation inhibitor from the grinder 2 are fed into the loading hopper of the conveyor 7.
• the coke formation inhibitor is 3-20% of the mass of the charge and consists of solid and liquid components.
• the solid charge component is any mass combination of thermoplastic linear polymers from the group: polyethylene, polypropylene, polyethylene terephthalate, polystyrene.
• the liquid component is polymethylsiloxane, in an amount of 0.5 - 1.0% of the total mass of the inhibitor.
• coke formation inhibitor can significantly reduce or completely eliminate the formation of coke on carbon particles during pyrolysis in reactor 8, which provides a carbon-containing material with high surface activity.
• the prepared mixture, together with an inhibitor of coke formation, is fed by a conveyor 7 to the pyrolysis reactor 8.
• Pyrolysis in the reactor 8 is carried out at a temperature of from 350 ° C in the main working zone of the reactor and up to 600 ° C at the outlet of the reactor.
• This provides effective thermal decomposition of the mixture and obtaining a solid residue with a given content of volatile components.
• the solid residue is discharged through a metering gateway 1 1 and fed to a hopper-cooler 12, where it is cooled to ambient temperature.
• Condensate of gaseous products is fed into the hopper 10 of the liquid fraction, and combustible gas is fed into the pyrolysis furnace of reactor 8 to burn and maintain an optimal pyrolysis temperature.
• the solid residue is conveyed by conveyor 13 to the crusher 14 for coarse crushing it to a fraction of 1-5 mm, and then to the magnetic separator 15.
• metal is removed from the crushed solid residue to a metal content of not more than 0.1% of the total mass of the solid residue, and the amount of metal in it is controlled using a metal identifier 17.
• the metal content of more than 0.1% of the total mass of the solid residue will not allow to provide rubber made using such a carbon-containing material, one of its normalized performance indicators - "rubber aging".
• the metal is fed into the storage hopper 16, and the crushed solid residue is fed into the steam chamber 18.
• the solid residue is activated by superheated steam at a temperature of 250-350 ° C.
• the activated solid residue is sent to fine grinding in a vortex mill 19, after which the finely divided activated solid residue is fed to a two-stage classification in the air-passage separator 20. From the air-passage separator 20, the small and light fraction is sent to the fine classification in the classifier 22, and the large and heavy fraction is sent to the hopper 21.
• the final fine classification is carried out into the F1 fraction less than 45 ckm (Fl ⁇ 45 ckm) and the F2 fraction, more than 45 ckm (F2> 45 ckm).
• the powder of the solid residue of fraction F2 greater than 45 ccm (F2> 45 ckm) from the electromasses of classifier 22 is returned for repeated fine grinding (recirculation) to the vortex mill 19.
• the solid residue powder of fraction F1, less than 45 tcm (Fl ⁇ 45 tcm) —the marketable carbon-containing material is fed to the storage hopper 23, and then to the granulator 25 and the filling machine 24 or to the granulator 25, and then to the filling machine 26.
• the packaged carbon-containing material is sent to the consumer or to the warehouse.
• the side rings were removed, after which the tires were fed into the grinder (shredder) 2 for grinding.
• the solid component of the inhibitor in the form of polyethylene and polypropylene waste from film materials in the amount of 10 - 12% of the total ground mass was fed from the hopper 3 to the grinder 2 through a batcher.
• the ground mass was fed by conveyor 7 to the pyrolysis reactor 8, where simultaneously from the hopper 5 through the metering pump 6 liquid polymethylsiloxane was fed in an amount of 1% of the total amount of loaded polyethylene and polypropylene waste.
• the prepared mixture by means of a conveyor 7 was fed into a pyrolysis reactor 8 with two heating zones, which was rotated and heated by furnace gases.
• the temperature of 370 ° ⁇ was maintained in the main working zone of reactor 8, and the temperature of 600 ° ⁇ was maintained at the outlet of reactor 8, which completely ensured the release of liquid and gaseous gyrolysis products.
• Condensate of gaseous products was supplied to the liquid fraction hopper 10, and combustible gas was supplied to the pyrolysis furnace of reactor 8 to burn and maintain an optimal pyrolysis temperature in reactor 8.
• the solid pyrolysis residue in the cooling bunker 12 was cooled to a temperature of 50 ° C, after which the conveyor 13 was transferred to a crusher 14 for preliminary coarse crushing to a particle size of not more than 5 mm and then to a two-stage magnetic separator 15 to remove iron to a normalized content (not more than 0.1%), which was controlled using a metal determinant 17.
• the separated iron-containing part of the solid residue was sent to a metal storage bin 16.
• the carbon-containing part of the solid residue was processed in the steam chamber 18 in a stream of superheated steam with a temperature of 300 ° C, and then cooled to 40 ° C and fed into the vortex mill 19 for fine grinding.
• the carbon-containing material from the vortex mill 19 was fed into the air-passage separator 20, where heavy mineral components were partially removed.
• the powdery product entered the electro-mass classifier 22, where the final fine classification was carried out for the F1 fraction less than 45 ckm (F 1 ⁇ 45 ckm) and the F2 fraction more than 45 ccm (F2> 45 ckm).
• the powder of the solid residue of the F2 fraction is greater than 45 ccm (F2> 45 ckm) from the electromassage of classifier 22 was returned for repeated fine grinding (recirculation) to the vortex mill 19.
• a powder of the solid residue of fraction F1 was obtained, less than 45 tcm (F 1 ⁇ 45 tcm).
• a carbon-containing material with an average particle size of 5-10 ccm is obtained, which is fed to the storage hopper 23 and then for packaging in the filling apparatus 24 or in the granulator 25.
• Prepackaged product is delivered to the consumer or to the warehouse.
• the quality indicators of the obtained carbon-containing material of the test samples according to ASTM methods were:

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Materials Engineering (AREA)
• Environmental & Geological Engineering (AREA)
• Mechanical Engineering (AREA)
• Combustion & Propulsion (AREA)
• Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
• Carbon And Carbon Compounds (AREA)
• Tires In General (AREA)
• Coke Industry (AREA)
• Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
• Disintegrating Or Milling (AREA)
• Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
• Processing Of Solid Wastes (AREA)

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Publications (1)

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Citations (5)

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• 2019
  • 2019-03-05 CN CN201980026845.9A patent/CN112055741B/zh not_active Expired - Fee Related
  • 2019-03-05 EA EA202092411A patent/EA202092411A1/ru unknown
  • 2019-03-05 US US17/045,777 patent/US11084937B2/en active Active
  • 2019-03-05 KR KR1020207032606A patent/KR102453460B1/ko not_active Expired - Fee Related
  • 2019-03-05 JP JP2021506076A patent/JP7186279B2/ja not_active Expired - Fee Related
  • 2019-03-05 WO PCT/IB2019/000374 patent/WO2019202387A1/ru not_active Ceased
  • 2019-03-05 EP EP19734496.3A patent/EP3798285B1/en active Active
  • 2019-03-05 CA CA3097633A patent/CA3097633C/en active Active
• 2020
  • 2020-10-03 IL IL277762A patent/IL277762B2/en unknown

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