A method and device for producing low-ash carbon black by pyrolysis of waste tires

A technology for tire pyrolysis and waste tires, applied in the direction of fibrous fillers, can solve the problems of high reaction temperature, demanding process conditions, large energy consumption, etc., and achieve the effects of low equipment investment cost, compact process and high thermal efficiency

Inactive Publication Date: 2016-07-06
QINGDAO TECHNOLOGICAL UNIVERSITY
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Problems solved by technology

The ash content of carbon black produced by this method is less than 1%, but the process conditions are harsh, requiring high reaction temperature and large energy consumption

Method used

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  • A method and device for producing low-ash carbon black by pyrolysis of waste tires

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Embodiment 1

[0024] Such as figure 1 As shown, the present invention provides a device for producing low-ash and low-sulfur carbon black by pyrolysis of waste tires, which mainly consists of a tire pyrolysis chamber 1 and an oil-gas carbonization chamber 2 .

[0025] The tire pyrolysis chamber 1 is composed of inner and outer layers, the outer layer is the heating zone 3, and the inner layer is the tire pyrolysis zone 4;

[0026] The two ends of the heating zone 3 of the tire pyrolysis chamber 1 are respectively provided with a heating gas inlet 5 and an outlet 6; one end of the pyrolysis zone 4 of the tire pyrolysis chamber 1 is provided with a raw material inlet 7, and the other end is provided with a pyrolysis oil gas outlet 8 and pyrolysis carbon outlet 9;

[0027] The oil-gas carbonization chamber 2 is equipped with a gas-solid separation device 10 in the middle, an oil carbonization zone 11 at the lower part of the baffle plate, and a gas combustion zone 12 at the upper part of the ...

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Abstract

The invention provides a method and device for producing low-ash and low-sulfur carbon black by pyrolysis of waste tires, which can produce carbon black products with an ash content of less than 1% and a sulfur content of less than 0.1%. The technical solution is to carry out secondary pyrolysis of the oil-containing gas generated by pyrolysis of tires. During the pyrolysis process, hydrogen gas is introduced to remove sulfur in carbon black, thereby realizing the production of low-ash and low-sulfur carbon black. The invented carbon black preparation device is mainly composed of a tire pyrolysis chamber and an oil-gas carbonization chamber. The tire pyrolysis chamber is composed of an outer layer heating zone and an inner layer tire pyrolysis zone; The lower part of the plate is the oil carbonization area, and the upper part is the gas combustion area. Since the gaseous oil generated by tire pyrolysis does not need to be condensed, it can be directly pyrolyzed and carbonized, and the carbonized oil is directly heated by using the tire pyrolysis gas, and the desulfurization process is realized while preparing carbon black. The whole process is compact and has high thermal efficiency. Carbon black products high quality.

Description

technical field [0001] The invention relates to the technical field of pyrolysis treatment of waste tires, in particular to a method and device for producing low-ash and low-sulfur carbon black by pyrolysis of waste tires. Background technique [0002] Pyrolytic carbon black is the key product of waste tire pyrolysis, its quality and market application value directly restrict the economy of waste tire pyrolysis process. However, because waste tire pyrolysis carbon black contains recycled carbon black fillers, inorganic ash (such as ZnO and ZnS, etc.) and carbonaceous deposits generated during pyrolysis, its surface activity is poor and its commercial value is very low, making it Practical applications are greatly limited. [0003] Usually, the ash content in carbon black prepared by direct pyrolysis of waste tires is about 20%, and the process of separating ash from carbon black is relatively difficult. In addition, a certain amount of sulfur in carbon black also has an ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/54
Inventor 罗思义马晨卜庆洁
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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