CN109096798B - Micro-oxidation activation method for waste tire pyrolytic carbon black - Google Patents
Micro-oxidation activation method for waste tire pyrolytic carbon black Download PDFInfo
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- CN109096798B CN109096798B CN201810974556.9A CN201810974556A CN109096798B CN 109096798 B CN109096798 B CN 109096798B CN 201810974556 A CN201810974556 A CN 201810974556A CN 109096798 B CN109096798 B CN 109096798B
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- 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
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- 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
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- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
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Abstract
The invention belongs to the technical field of waste resource utilization, and discloses a micro-oxidation activation method for waste tire pyrolytic carbon black. Compared with the traditional pyrolytic carbon black, the pyrolytic carbon black prepared by the invention removes most of volatile matters, carbonaceous sediments and coking substances accumulated on the surface of the carbon black, improves the surface property of the pyrolytic carbon black, greatly increases the porosity and surface activity of the pyrolytic carbon black, provides high-quality raw materials for the application of the subsequent pyrolytic carbon black in the fields of rubber, coating, active carbon, asphalt modifier and the like, reduces the subsequent commercialization cost, enlarges the application range of the pyrolytic carbon black, and promotes the advance of the recycling industrial chain of the waste tire; meanwhile, gas products generated in each unit can enter the catalytic combustion furnace for combustion, so that energy is provided for the waste tire pyrolysis furnace and the micro-oxidation activation furnace, the energy consumption is reduced, and the cost is saved.
Description
Technical Field
The invention belongs to the technical field of waste resource utilization, and particularly relates to a micro-oxidation activation method for pyrolysis carbon black of a waste tire.
Background
With the popularization of automobiles, the tire industry has been developed to a great extent, but the waste tires belong to thermosetting polymer materials and are difficult to degrade under natural conditions, so that the pyrolysis technology appears in the field of public use, and the pyrolysis realizes the complete degradation of organic matters of the waste tires in an oxygen-free environment, thereby avoiding the problem of secondary pollution in the disposal process. And pyrolysis products with high added values are generated in the group, so that the method really accords with the treatment principle of reduction, harmlessness and recycling of solid wastes.
Pyrolytic carbon black is an important product of pyrolysis of waste tires, mainly consisting of carbon black and inorganic fillers added during tire production, and coke deposits formed due to secondary reactions during pyrolysis, with a yield of 30 to 40%. The main component of the pyrolytic carbon black is industrial carbon black which has a pore structure, and volatile substances are separated out in the pyrolytic process to form new pores inside and on the surface of the pyrolytic carbon, but on the other hand, the ash or coke substances are accumulated on the surface of the carbon black to block partial pore diameters, so that the surface activity of the carbon black is influenced, the subsequent fine processing is not facilitated, and the commercialization of the industrial chain for recycling the waste tires is also not facilitated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a micro-oxidation activation method for the pyrolytic carbon black of the waste tire, compared with the traditional pyrolytic carbon black, the prepared pyrolytic carbon black removes most of volatile matters, carbonaceous sediments and coking substances accumulated on the surface of the carbon black, improves the surface property of the pyrolytic carbon black, greatly increases the porosity and the surface activity of the pyrolytic carbon black, provides a high-quality raw material for the application of the subsequent pyrolytic carbon black in the fields of rubber, paint, active carbon, asphalt modifier and the like, reduces the subsequent commercialization cost, enlarges the application range of the pyrolytic carbon black and promotes the advance of the recycling industrial chain of the waste tire; meanwhile, gas products generated in each unit can enter the catalytic combustion furnace for combustion, so that energy is provided for the waste tire pyrolysis furnace and the micro-oxidation activation furnace, the energy consumption is reduced, and the cost is saved.
The technical scheme of the invention is as follows:
a micro-oxidation activation method for pyrolytic carbon black of waste tires mainly comprises a waste tire pyrolysis furnace, a micro-oxidation activation furnace, a gas storage tank, a catalytic combustion furnace, a condensing device, a pyrolytic oil storage tank and a flue gas purification device;
the method comprises the following steps that waste tires are crushed, screened and then sent into a waste tire pyrolyzing furnace to be pyrolyzed at a low temperature of 400-500 ℃, pyrolysis volatile matters generated in the pyrolyzing process are sent into a condensing device, condensed pyrolysis oil is sent into a pyrolysis oil storage tank to be stored, and pyrolyzed gaseous products are sent into a catalytic combustion furnace through a gas storage tank; feeding pyrolytic carbon black formed in a pyrolysis furnace into a micro-oxidation activation furnace, carrying out surface micro-oxidation activity treatment on the pyrolytic carbon black at 500-800 ℃ under the condition of introducing trace air, wherein trace oxygen is in short-time contact with volatile matters, carbonaceous deposits and coking substances blocking pores on the surface of the pyrolytic carbon black to carry out oxidation reaction, so that the deposits are removed, internal polar functional groups are exposed, the blocked pore passages are opened, the modified carbon black after activation is discharged, volatile gas generated in the process is fed into a catalytic combustion furnace, the volatile gas and pyrolytic gaseous products generated in the process of pyrolysis are fully combusted in the catalytic combustion furnace, a small amount of generated high-temperature flue gas and trace air are fed back to the micro-oxidation activation furnace for energy supply, and most of the high-temperature flue gas supplies energy to the waste tire pyrolysis furnace; and sending the cooled flue gas after heat exchange into a flue gas purification device for treatment, and discharging after reaching the standard.
The invention has the beneficial effects that:
(1) compared with the traditional pyrolytic carbon black, the prepared pyrolytic carbon black removes most of volatile matters, carbonaceous sediments and coking substances accumulated on the surface of the carbon black, improves the surface property of the pyrolytic carbon black, greatly increases the porosity and surface activity of the pyrolytic carbon black, and provides a high-quality raw material for the application of the subsequent pyrolytic carbon black in the fields of rubber, coating, active carbon, asphalt modifier and the like;
(2) the subsequent commercialization cost is reduced, the range of the application field of the pyrolytic carbon black is expanded, and the advance of the waste tire recycling industrial chain is promoted;
(3) the gas products generated in each unit can enter the catalytic combustion furnace for combustion, so that energy is provided for the waste tire pyrolysis furnace and the micro-oxidation activation furnace, the energy consumption is reduced, and the cost is saved.
Drawings
FIG. 1 is a schematic flow chart of the method for micro-oxidation activation of pyrolytic carbon black of waste tires.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings and technical solutions.
Referring to fig. 1, the method for micro-oxidation activation of pyrolytic carbon black of waste tires of the invention mainly comprises a waste tire pyrolysis furnace, a micro-oxidation activation furnace, a gas storage tank, a catalytic combustion furnace, a condensing device, a pyrolytic oil storage tank and a flue gas purification device;
the method comprises the following steps that waste tires are crushed, screened and then sent into a waste tire pyrolyzing furnace to be pyrolyzed at a low temperature of 400-500 ℃, pyrolysis volatile matters generated in the pyrolyzing process are sent into a condensing device, condensed pyrolysis oil is sent into a pyrolysis oil storage tank to be stored, and pyrolyzed gaseous products are sent into a catalytic combustion furnace through a gas storage tank; feeding pyrolytic carbon black formed in a pyrolysis furnace into a micro-oxidation activation furnace, carrying out surface micro-oxidation activity treatment on the pyrolytic carbon black at 500-800 ℃ under the condition of introducing trace air, wherein trace oxygen is in short-time contact with volatile matters, carbonaceous deposits and coking substances blocking pores on the surface of the pyrolytic carbon black to carry out oxidation reaction, so that the deposits are removed, internal polar functional groups are exposed, the blocked pore passages are opened, the modified carbon black after activation is discharged, volatile gas generated in the process is fed into a catalytic combustion furnace, the volatile gas and pyrolytic gaseous products generated in the process of pyrolysis are fully combusted in the catalytic combustion furnace, a small amount of generated high-temperature flue gas and trace air are fed back to the micro-oxidation activation furnace for energy supply, and most of the high-temperature flue gas supplies energy to the waste tire pyrolysis furnace; and sending the cooled flue gas after heat exchange into a flue gas purification device for treatment, and discharging after reaching the standard.
Claims (1)
1. A micro-oxidation activation method of pyrolytic carbon black of waste tires is characterized in that a device used by the method comprises a pyrolytic furnace of waste tires, a micro-oxidation activation furnace, a gas storage tank, a catalytic combustion furnace, a condensing device, a storage tank of pyrolytic oil and a flue gas purification device;
the method comprises the following steps of (1) crushing and screening waste tires, then sending the waste tires into a waste tire pyrolysis furnace for pyrolysis at a low temperature of 400-500 ℃, and sending pyrolysis volatile matters generated in the pyrolysis technological process into a condensing device; the pyrolysis oil condensed by the condensing device is sent into a pyrolysis oil storage tank for storage, and the gaseous products of pyrolysis are sent into the catalytic combustion furnace through a gas storage tank; feeding pyrolytic carbon black formed in a waste tire pyrolysis furnace into a micro-oxidation activation furnace, carrying out surface micro-oxidation activation treatment on the pyrolytic carbon black at 500-800 ℃ under the condition of introducing trace air, wherein trace oxygen is in short contact with volatile matters, carbonaceous deposits and coking substances blocking pores on the surface of the pyrolytic carbon black to carry out oxidation reaction, so that the deposits are removed, internal polar functional groups are exposed, the blocked pore channels are opened, the modified carbon black after activation is discharged, volatile gas generated in the process is fed into a catalytic combustion furnace, the volatile gas and pyrolysis gaseous products generated in the pyrolysis process are fully combusted in the catalytic combustion furnace, a small amount of generated high-temperature flue gas and trace air are fed back to the micro-oxidation activation furnace for energy supply, and most of the high-temperature flue gas supplies energy to the waste tire pyrolysis furnace; and (4) sending the cooling flue gas subjected to heat exchange of the waste tire pyrolyzing furnace into a flue gas purifying device for treatment, and discharging after reaching the standard.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109647341A (en) * | 2019-01-29 | 2019-04-19 | 北京云水浩瑞环境科技有限公司 | The system and method for preparing adsorbent material using sludge |
| CN112341843A (en) * | 2020-11-09 | 2021-02-09 | 江西省永固新能源炭黑有限公司 | Micro-oxidation activation method for waste tire pyrolytic carbon black |
| CN114074941B (en) * | 2021-01-31 | 2023-07-04 | 天津绿展环保科技有限公司 | Comprehensive utilization and cooperative treatment method for activated carbon |
| CN113213451A (en) * | 2021-05-31 | 2021-08-06 | 华中科技大学 | Efficient carbon-rich waste tire recycling treatment method |
| CN113717550B (en) * | 2021-08-25 | 2022-07-15 | 中策橡胶集团股份有限公司 | Device and method for preparing environment-friendly carbon black by pyrolyzing waste tire rubber particles |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350092A (en) * | 2016-10-10 | 2017-01-25 | 格林美（武汉）城市矿产循环产业园开发有限公司 | Method for catalyzing and thermally cracking automobile waste tires at low temperature into gas and oil |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106350092A (en) * | 2016-10-10 | 2017-01-25 | 格林美（武汉）城市矿产循环产业园开发有限公司 | Method for catalyzing and thermally cracking automobile waste tires at low temperature into gas and oil |
Non-Patent Citations (1)
| Title |
|---|
| "ACTIVATION OF WASTE TYRES CHAR UPON CYCLIC OXYGEN CHEMISORPTION-DESORPTION";Francisco Heras等;《Ind. Eng. Chem. Res.》;20090331;第48卷(第10期);第4664-4670页 * |
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