Method for preparing carbon black by electrocracking waste and old tyre

A waste tire and arc cracking technology, which is used in the preparation of liquid hydrocarbon mixtures, fibrous fillers, petroleum industry, etc., can solve the problems of small specific surface area of ​​carbon black, low utilization value, pollution, etc. The effect of high and large specific surface area

Inactive Publication Date: 2008-07-09
王胤
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Problems solved by technology

The above method has low thermal efficiency due to indirect heating; at the same time, the steel wire in the waste tire is sandwiched in the carbon layer, which needs to be mechanically separated and recovered again, causing pollution; the carbon black obtained at the dry distillation temperature has a small specific surface area and low utilization value

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  • Method for preparing carbon black by electrocracking waste and old tyre

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Embodiment Construction

[0008] (1) airtight holding furnace in the electric arc cracking furnace is made up of (2) electrode, (18) oxygen control device, (4) gas outlet, (5) tap hole, (6) residual oil return port. 〔7〕The tire enters the 〔1〕 airtight holding furnace through the 〔3〕 tire entrance, and the electrode〔2〕 generates an 〔8〕 high-temperature electric arc to suddenly raise the temperature of the 〔7〕 tire, wherein the steel wire is melted into 〔9〕 molten steel, and 〔9〕 molten steel Recycling along the (5) tapping port; (7) tires are vaporized after pyrolysis to generate (10) gas containing carbon black, carbon monoxide and hydrogen, and the (10) gas enters the (11) temperature regulating device through the (4) gas outlet , (12) dedusting device reclaims (13) finished carbon black; (10) gas is separated from (15) residual oil through (14) deoiling device, and (15) residual oil returns along (6) residual oil return port 〔1〕The airtight holding furnace is used for cyclic cracking; 〔10〕 gas is desu...

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Abstract

The invention relates to a process for preparing carbon black by utilizing electric arc to crack waste and old tires, which utilizes a closed container and electric arc to regulate and control oxygen to constitute an electric-arc cracking furnace, and waste and old tires are cracked in the electric-arc cracking furnace. Steel lines in the waste tires are fused in the electric-arc temperature, steel ingots are directly prepared to recycle, the chemical bond of rubber in the waste and old tires are fractured under the electric-arc temperature and are cracked into carbon black, carbon monoxide, hydrogen gas and the like. The carbon black which is prepared by the upper method has the advantages of big specific surface area, high activity and high utilization valve, the surface characteristic of the carbon black which is originally added in the waste and old tires is restored and improved after the electric-arc temperature. Gases such as carbon monoxide, hydrogen gas and the like which are produced in the electric-arc temperature can be directly utilized by city gas after the process of de-oiling and desulfurizing, the process has no waste gas to be discharge and no pollution.

Description

[0001] The invention relates to a method for harmlessly treating waste tires, in particular to a method for producing carbon black and city gas by cracking waste tires. Background technique: [0002] At present, the main method of processing waste tires is to use a closed furnace to indirectly heat and dry waste tires to vaporize and crack the rubber in waste tires to obtain fuel oil, combustible gas and carbon black. The above method has low thermal efficiency due to indirect heating; meanwhile, the steel wire in the waste tire is sandwiched in the carbon layer, which needs to be mechanically separated and recovered again, causing pollution; the carbon black obtained at the dry distillation temperature has a small specific surface area and low utilization value. Invention content: [0003] The task of the present invention is to provide a pollution-free method for directly producing steel ingots and city gas by cracking waste tires. [0004] Technical solution: In order to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/10C09C1/48C10G1/10
CPCY02W30/62
Inventor 王胤
Owner 王胤
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