CN114058394A - Method for self-cleaning coke and uniformly thermally cracking waste tire - Google Patents
Method for self-cleaning coke and uniformly thermally cracking waste tire Download PDFInfo
- Publication number
- CN114058394A CN114058394A CN202110476786.4A CN202110476786A CN114058394A CN 114058394 A CN114058394 A CN 114058394A CN 202110476786 A CN202110476786 A CN 202110476786A CN 114058394 A CN114058394 A CN 114058394A
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- China
- Prior art keywords
- thermal cracking
- cracking furnace
- waste tire
- inner cylinder
- ceramic balls
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Classifications
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- 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
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- 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
-
- 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
Abstract
A method for self-cleaning coke and uniformly heating a thermal cracking waste tire comprises the steps that waste tire colloidal particles and ceramic balls are simultaneously conveyed into an inner cylinder of a thermal cracking furnace through a variable-pitch screw conveyor, a transmission mechanism of the thermal cracking furnace drives the inner cylinder of the thermal cracking furnace to rotate, the waste tire colloidal particles and the ceramic balls rotate together in the inner cylinder of the thermal cracking furnace, and the throwing, impacting and self-grinding operations are completed in the inner cylinder of the thermal cracking furnace, carbon black generated after the waste tire colloidal particles are pyrolyzed is ground into powder by the ceramic balls, and the powder carbon black and the ceramic balls are discharged through a discharge hole of the thermal cracking furnace; the invention can prevent the waste tire from coking on the cylinder in the thermal cracking furnace in the thermal cracking process, improve the thermal efficiency, greatly prolong the service life of the thermal cracking furnace, grind the thermal cracking product massive carbon black into powder by ceramic balls, save electric power in the subsequent carbon black treatment working section and reduce the production cost.
Description
Technical Field
The invention relates to the technical field of recycling comprehensive utilization of solid wastes, in particular to a method for self-cleaning, uniformly heating and thermally cracking waste tires.
Background
China is a country with large production of waste tires, according to incomplete statistics, the production of the waste tires in China in 2020 exceeds 2000 ten thousand tons, the current common treatment equipment is a thermal cracking furnace, and thermal cracking is to crack and convert waste tires (rubber) into fuel oil, carbon black, steel wires and the like with high added values under the condition of no oxygen. In the thermal cracking process of tires, the raw materials such as colloid and asphaltene are easy to cause coking, and due to the reasons of uneven temperature, local high temperature, slow flow rate, poor heat exchange contact surface and the like, the thermal cracking furnace is very serious in coking and difficult in coke cleaning, and even can be scrapped after running for 2 to 3 years.
In a thermal cracking furnace, the carbon black thermally decomposed is in a blocky form, and the blocky carbon black is crushed in the subsequent carbon black treatment process, so that the electric power is consumed; the technical problem which is difficult to solve for a long time is how to overcome the defects of the processing modes and technologies such as serious coking, uneven heating, large power consumption in the subsequent processing of the massive carbon black and the like in the existing waste tire thermal cracking process.
In view of the above, a method for self-cleaning, thermally and uniformly thermally cracking waste tires has been developed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a method for self-cleaning and uniformly heating the thermal cracking waste tires, which can prevent the waste tires from coking on a cylinder body in a thermal cracking furnace in the thermal cracking process, improve the thermal efficiency, greatly prolong the service life of the thermal cracking furnace, grind the thermal cracking product massive carbon black into powder by ceramic balls, save the electric power in the subsequent carbon black treatment section and reduce the production cost.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for self-cleaning heated uniform thermal cracking of waste tires comprises the steps that waste tire colloidal particles and ceramic balls are simultaneously conveyed into an inner cylinder of a thermal cracking furnace through a variable-pitch screw conveyor, a transmission mechanism of the thermal cracking furnace drives the inner cylinder of the thermal cracking furnace to rotate, the waste tire colloidal particles and the ceramic balls rotate together in the inner cylinder of the thermal cracking furnace, the throwing, impacting and self-grinding operations are completed in the inner cylinder of the thermal cracking furnace, carbon black generated after pyrolysis of the waste tire colloidal particles is ground into powder by the ceramic balls, and the powder carbon black and the ceramic balls are discharged through a discharge hole of the thermal cracking furnace.
The thermal cracking temperature of the inner cylinder body of the thermal cracking furnace is 800 ℃.
The ceramic ball is made of high-temperature-resistant and high-hardness ceramic, and the diameter of the ceramic ball is 1.2-1.7 cm.
The size of the waste tire colloidal particles is 3.5-4.5 cm.
The invention has the beneficial effects that: when the treated waste tire colloidal particles are fed, ceramic balls are simultaneously fed, the main components of the ceramic balls are alumina, the ceramic balls can resist temperature of 1600 ℃, the hardness is Mohs 9.9, the problems of ball breaking and the like can not be generated in the thermal cracking process, the quality of thermal cracking product carbon black is not influenced, a transmission device is used for driving a cylinder body in a thermal cracking furnace, the waste tire colloidal particles and the ceramic balls are rotated by the rotation of the cylinder body in the thermal cracking furnace and the cylinder body in the thermal cracking furnace rotate together, and the throwing, impacting and self-grinding operations are completed in the cylinder body, so that the contact area is large, the heat conduction is strong, and the heating is uniform; compared with the working method of the existing thermal cracking furnace, the thermal cracking furnace has the advantages that the thermal cracking furnace is heated uniformly in the thermal cracking process, ceramic balls roll, the barrel in the thermal cracking furnace is difficult to coke, the thermal cracking product massive carbon black is ground into powder by the ceramic balls, the subsequent carbon black treatment working section saves electric power, the ceramic balls are reused after the mixture of the powdery carbon black and the ceramic balls is screened, through accounting, coke bodies are difficult to form on the heating surfaces and the inner surface of the furnace, the thermal cracking oil in the product is increased by 1.2 percent, the thermal cracking gas is increased by 1 percent, the service life of equipment is prolonged by more than 10 years, the thermal cracking furnace with the self-grinding function has the outlet carbon black in powder form, and the electric power is saved by 1Kw.h for each 1 ton of waste tires; the invention can prevent the waste tire from coking on the cylinder in the thermal cracking furnace in the thermal cracking process, improve the thermal efficiency, greatly prolong the service life of the thermal cracking furnace, grind the thermal cracking product massive carbon black into powder by ceramic balls, save electric power in the subsequent carbon black treatment working section and reduce the production cost.
Detailed Description
The present invention will be described in further detail with reference to the following examples and embodiments:
example 1
The waste tire colloidal particles and the ceramic balls are simultaneously conveyed into an inner cylinder of the thermal cracking furnace through a variable-pitch screw conveyor, a transmission mechanism of the thermal cracking furnace drives the inner cylinder of the thermal cracking furnace to rotate, the waste tire colloidal particles and the ceramic balls rotate together in the inner cylinder of the thermal cracking furnace and finish throwing, impacting and self-grinding operations in the inner cylinder of the thermal cracking furnace, carbon black generated after pyrolysis of the waste tire colloidal particles is ground into powder by the ceramic balls, and the powder carbon black and the ceramic balls are discharged through a discharge hole of the thermal cracking furnace.
Example 2
The thermal cracking temperature of the inner cylinder body of the thermal cracking furnace is 800 ℃.
Example 3
The ceramic ball is made of high-temperature-resistant and high-hardness ceramic, and the diameter of the ceramic ball is 1.2-1.7 cm.
Example 4
The size of the waste tire colloidal particles is 3.5-4.5 cm.
Claims (4)
1. A method for self-cleaning, uniformly heating and thermally cracking waste tires is characterized by comprising the following steps: the waste tire colloidal particles and the ceramic balls are simultaneously conveyed into an inner cylinder of the thermal cracking furnace through a variable-pitch screw conveyor, a transmission mechanism of the thermal cracking furnace drives the inner cylinder of the thermal cracking furnace to rotate, the waste tire colloidal particles and the ceramic balls rotate together in the inner cylinder of the thermal cracking furnace and finish throwing, impacting and self-grinding operations in the inner cylinder of the thermal cracking furnace, carbon black generated after pyrolysis of the waste tire colloidal particles is ground into powder by the ceramic balls, and the powder carbon black and the ceramic balls are discharged through a discharge hole of the thermal cracking furnace.
2. The method of claim 1, wherein the step of self-cleaning the thermally homogenized thermal waste tires comprises: the thermal cracking temperature of the inner cylinder body of the thermal cracking furnace is 800 ℃.
3. The method of claim 1, wherein the step of self-cleaning the thermally homogenized thermal waste tires comprises: the ceramic ball is made of high-temperature-resistant and high-hardness ceramic, and the diameter of the ceramic ball is 1.2-1.7 cm.
4. The method of claim 1, wherein the step of self-cleaning the thermally homogenized thermal waste tires comprises: the size of the waste tire colloidal particles is 3.5-4.5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476786.4A CN114058394A (en) | 2021-04-29 | 2021-04-29 | Method for self-cleaning coke and uniformly thermally cracking waste tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476786.4A CN114058394A (en) | 2021-04-29 | 2021-04-29 | Method for self-cleaning coke and uniformly thermally cracking waste tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114058394A true CN114058394A (en) | 2022-02-18 |
Family
ID=80233206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110476786.4A Pending CN114058394A (en) | 2021-04-29 | 2021-04-29 | Method for self-cleaning coke and uniformly thermally cracking waste tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114058394A (en) |
Citations (16)
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|---|---|---|---|---|
| US4063903A (en) * | 1975-09-08 | 1977-12-20 | Combustion Equipment Associates Inc. | Apparatus for disposal of solid wastes and recovery of fuel product therefrom |
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| CN106916601A (en) * | 2017-03-29 | 2017-07-04 | 山东铂铠环保科技有限公司 | A kind of apparatus and method of the junked tire pyrolysis low ash content low-sulfur carbon black of production |
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| US20180051876A1 (en) * | 2015-03-05 | 2018-02-22 | Standard Gas Limited | Pyrolysis retort methods and apparatus |
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-
2021
- 2021-04-29 CN CN202110476786.4A patent/CN114058394A/en active Pending
Patent Citations (16)
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| US4063903A (en) * | 1975-09-08 | 1977-12-20 | Combustion Equipment Associates Inc. | Apparatus for disposal of solid wastes and recovery of fuel product therefrom |
| US4160719A (en) * | 1977-09-28 | 1979-07-10 | Phillips Petroleum Company | Iron-containing refractory balls for retorting oil shale |
| JPH09328354A (en) * | 1996-06-07 | 1997-12-22 | Kurosaki Refract Co Ltd | Recycling for raw material from used refractory |
| JP3023479B1 (en) * | 1998-05-13 | 2000-03-21 | 株式会社豊栄商会 | Processing apparatus, processing method, and soil processing method |
| JP2001031793A (en) * | 1999-07-19 | 2001-02-06 | Japan Electric Cable Technology Center Inc | Method for removing chlorine from cover waste material of polyvinyl chloride covered wire |
| US20040079262A1 (en) * | 2000-12-19 | 2004-04-29 | Andreas Hornung | Plant for the thermal treatment of material and operation process thereof |
| JP2007332220A (en) * | 2006-06-13 | 2007-12-27 | Toshiba Corp | Pyrolytic treatment apparatus |
| EP2465904A1 (en) * | 2010-12-20 | 2012-06-20 | Eco Logic Sp. z o.o. | A method and apparatus for manufacturing of carbon black/mineral filler from scrap tires and a carbon black/mineral filler |
| CN103374377A (en) * | 2012-04-27 | 2013-10-30 | 北京低碳清洁能源研究所 | Carbonaceous material pyrolysis device, pyrolysis system comprising pyrolysis device, and method for pyrolyzing carbonaceous material |
| US20160194567A1 (en) * | 2012-10-25 | 2016-07-07 | Bary Wallace Wilson | System for reprocessing carbonaceous waste materials to produce energy and carbon-free materials |
| US20180051876A1 (en) * | 2015-03-05 | 2018-02-22 | Standard Gas Limited | Pyrolysis retort methods and apparatus |
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| CN109251756A (en) * | 2018-11-19 | 2019-01-22 | 北京万向新元科技股份有限公司 | A kind of damaged tire cracking black carbon carbonization system |
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