Method for catalytic cracking treatment of waste/used tires

A technology for catalytic cracking and waste tires, applied in the field of waste tire recycling, can solve the problems of difficult to effectively use rubber products, low recovery rate of pyrolysis oil and gas, low surface activity, etc., to shorten the required time, reduce the reaction temperature, The effect of reducing carbon deposits and coking

Inactive Publication Date: 2018-07-31
山东铂铠环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The recovery rate of pyrolysis oil and gas in this process is low, and the carbon black particles produced are relatively coarse, contain a large amount of impurities, and have low surface activity, so it is difficult to be effectively used in rubber products, resulting in long-term accumulation of environmental pollution

Method used

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  • Method for catalytic cracking treatment of waste/used tires

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Effect test

Embodiment 1

[0022] The method for treating waste tires by catalytic cracking includes raw material pretreatment, primary catalytic cracking, secondary cracking, distillation and desulfurization processes;

[0023] The primary catalytic cracking process is to mix the clean rubber with a particle size of 2mm and the organic waste of the heat-conducting hydrogenation agent according to the mass ratio of 1:0.2 and add them to a vacuum catalytic cracking furnace for cracking, wherein the cracking temperature is 500°C. The solid phase residence time is 10 minutes. The cracked gas produced by cracking is divided into non-condensable gas and cracked oil after cooling. A part of the non-condensable gas is stored, and a part is used as fuel to heat the vacuum catalytic cracking furnace, while the cracked oil enters the next distillation process. , the solid cracking product enters the secondary cracking process.

[0024] The secondary cracking refers to mixing the solid cracking product and the bin...

Embodiment 2

[0026] The method for treating waste tires by catalytic cracking includes raw material pretreatment, primary catalytic cracking, secondary cracking, distillation and desulfurization processes;

[0027] The primary catalytic cracking process is to mix the clean rubber with a particle size of 8mm and the waste engine oil of the heat-conducting hydrogenation agent according to the mass ratio of 1:0.5 and add them to the vacuum catalytic cracking furnace for cracking, wherein the cracking temperature is 650°C, solid The phase residence time is 18 minutes. The cracked gas produced by cracking is divided into non-condensable gas and cracked oil after cooling. A part of the non-condensable gas is stored, and a part is used as fuel to heat the vacuum catalytic cracking furnace, while the cracked oil enters the next distillation process. The solid cracking product enters the secondary cracking process.

[0028] The secondary cracking refers to mixing the solid cracking product and the ...

Embodiment 3

[0030] The method for treating waste tires by catalytic cracking includes raw material pretreatment, primary catalytic cracking, secondary cracking, distillation and desulfurization processes;

[0031] The primary catalytic cracking process is to mix clean rubber with a particle size of 10 mm and heat-conducting hydrogenation agent waste plastics according to a mass ratio of 1:0.6 and add them to a vacuum catalytic cracking furnace for cracking, wherein the cracking temperature is 700 ° C, solid The phase residence time is 20 minutes. The cracked gas produced by cracking is divided into non-condensable gas and cracked oil after cooling. A part of the non-condensable gas is stored, and a part is used as fuel to heat the vacuum catalytic cracking furnace, while the cracked oil enters the next distillation process. The solid cracking product enters the secondary cracking process.

[0032] The secondary cracking refers to mixing the solid cracking product and the binder produced b...

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Abstract

The invention discloses a method for catalytic cracking treatment of waste/used tires and belongs to the technical field of reutilization of the waste/used tires. The method is used for solving the problems in the prior art that the recovery rate is low, carbon black granules are large in size, and the pollution is heavy. The method for the catalytic cracking treatment of the waste/used tires comprises the procedures of raw material pretreatment, primary catalytic cracking, secondary cracking, distillation and desulfurization, wherein the secondary cracking means adding a solid-state cracked product produced from primary catalytic cracking into a secondary cracker for secondary cracking, subjecting produced cracked gas to dedusting and desulfurizing, and then, storing up the cracked gas. The method can be applied to the catalytic cracking treatment of the waste/used tires.

Description

technical field [0001] The invention relates to a method for catalytic cracking treatment of waste tires, which belongs to the technical field of waste tire recycling. Background technique [0002] As solid waste, waste tires are piled up in the open air and affect the environment. They are called "black pollution", and their recycling is a worldwide problem. The treatment method of waste tires, the most advanced technology at the present stage mainly includes three processes of tire crushing and slicing, thermal cracking treatment, and carbon black crushing and packaging. , and then through magnetic separation, the steel wire is recovered, and then sent to the secondary crusher for crushing into rubber particles with a diameter of less than 25mm. The thermal cracking process includes transporting the rubber particles obtained in the previous process to the thermal cracking furnace for thermal cracking. Pellets are thermally cracked at 480-700°C and a slight negative pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/10
Inventor 孙尚峰张广军
Owner 山东铂铠环保科技有限公司
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