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System and method for reducing ash content of pyrolysis carbon black of waste tires and recovering Zn

A technology of waste tires and carbon black, which is applied in the direction of fibrous fillers, etc., can solve the problems of large water consumption, unresolved Zn efficient recovery, unresolved chemical consumption, etc., and achieve the effects of reduced ash content, high recovery rate, and improved performance

Active Publication Date: 2020-02-07
珠海格力绿色再生资源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Most of the existing technologies for reducing the ash content of pyrolysis carbon black are by adjusting the amount, type, and adding process of the chemical agent, which have not solved the problems of large chemical consumption, large water consumption, and complicated waste liquid treatment. At the same time, most of them do not Zn is not efficiently recovered

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  • System and method for reducing ash content of pyrolysis carbon black of waste tires and recovering Zn

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Such as figure 1As shown, a kind of system of reducing waste tire pyrolysis carbon black ash and reclaiming Zn of the present embodiment, described system comprises the distillation chamber connected in sequence, the first condensing tower, the second condensing tower, described first condensing tower A zinc collection tank is also connected, the second condensation tower is also connected with an oil collection tank and a tail gas treatment device, and the distillation chamber is connected with a vacuum pump. A vacuum valve is arranged between the distillation chamber and the vacuum pump, and the vacuum control of the distillation chamber can be realized by controlling the opening or closing of the vacuum valve. A check valve that only allows gas to enter the first condensation tower from the distillation chamber in one direction is arranged between the distillation chamber and the first condensation tower. The check valve of the present invention can make the gas in t...

Embodiment 2

[0045] The total ash content in the waste tire pyrolysis carbon black described in this example is 16.8%, and the content of zinc oxide is 8.5%.

[0046] A kind of method of utilizing the system of embodiment 1 to reduce waste tire pyrolysis carbon black ash and reclaim Zn of the present embodiment, described method comprises the steps:

[0047] (1) Send waste tire pyrolysis carbon black to the distillation chamber through the feed port, and close the feed port;

[0048] (2) Turn on the vacuum pump, vacuumize the distillation chamber to 30-40Pa to achieve a basic anaerobic environment, close the vacuum pump and the vacuum valve, and preheat the first condensation tower to 200°C through the heating device;

[0049] (3) start to heat the distillation chamber, and along with the raising of temperature, the oil part in the pyrolysis carbon black begins to volatilize and pass through the first condensation tower and the second condensation tower successively, the temperature of the...

Embodiment 3

[0053] The total ash content in the waste tire pyrolysis carbon black described in this example is 16.8%, and the content of zinc oxide is 8.5%.

[0054] A kind of method of utilizing the system of embodiment 1 to reduce waste tire pyrolysis carbon black ash and reclaim Zn of the present embodiment, described method comprises the steps:

[0055] (1) Send waste tire pyrolysis carbon black to the distillation chamber through the feed port, and close the feed port;

[0056] (2) Turn on the vacuum pump, vacuumize the distillation chamber to 10-30Pa to achieve a basic anaerobic environment, close the vacuum pump and the vacuum valve, and preheat the first condensation tower to 300°C through the heating device;

[0057] (3) start to heat the distillation chamber, and along with the raising of temperature, the oil part in the pyrolysis carbon black begins to volatilize and pass through the first condensation tower and the second condensation tower successively, the temperature of the...

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Abstract

The invention relates to a system and a method for reducing the ash content of pyrolysis carbon black of waste tires and recovering Zn. The system comprises a distillation chamber, a first condensation tower and a second condensation tower which are sequentially connected, wherein the first condensation tower is also connected with a zinc collecting tank; the second condensation tower is also connected with an oil collecting tank and a tail gas treatment device; and the distillation chamber is connected with a vacuum pump. According to the method disclosed by the invention, the pyrolysis carbon black is reprocessed by using a vacuum distillation chamber, carbon black and zinc oxide in the pyrolysis carbon black are subjected to a carbothermic reduction reaction under a high-temperature vacuum environment to generate zinc and vaporize at a high temperature, condensation recovery is realized, and residual oil in the carbon black is removed by high-temperature vaporization at the same time; according to the method disclosed by the invention, the ash content of the pyrolysis carbon black can be reduced, the performance of the pyrolysis carbon black is greatly improved, meanwhile, the purposes of recovering zinc and removing excess oil are achieved, the treated carbon black achieves the purposes of deodorization and oil removal, the ash content of the treated carbon black can be obviously reduced, and the recovery rate of crude zinc and oil is high.

Description

technical field [0001] The invention belongs to the technical field of waste tire treatment, and in particular relates to a system and method for reducing the pyrolysis carbon black ash content of waste tires and recovering Zn. Background technique [0002] With the rapid development of economy and industrialization, the number of waste tires has increased sharply. Therefore, how to realize the recycling and utilization of waste tire resources is of great significance to the sustainable development of circular economy, industrial ecology and society. [0003] The main products of pyrolysis of waste tires are pyrolysis oil and pyrolysis carbon black. Pyrolysis carbon black can be used as tire reinforcement carbon black and pigment after deep processing, which greatly increases the added value. ZnO and SiO are often added in the tire manufacturing process 2 , sulfur and other chemical additives, these additives will be enriched and pyrolyzed in carbon black with the cracking...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/56C22B19/00
CPCC09C1/56C22B19/00
Inventor 王九飙姚璎珈陈龙张青罗云杨圣月周文明
Owner 珠海格力绿色再生资源有限公司
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