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A tire rubber pyrolysis method combined with pyrolysis gas circulation heating and microwave

A technology of circulating heating and cracking gas, which is applied in special forms of carbonization, coking ovens, petroleum industry, etc., can solve the problems of cracking products not meeting environmental protection requirements, low controllability of cracking treatment process, low cracking efficiency, etc. Utilization efficiency, improvement of microwave absorption capacity, and effect of increasing cracking efficiency

Active Publication Date: 2017-10-31
SICHUAN HOT PULSE MICROWAVE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of high energy consumption, low cracking efficiency, cracking products that do not meet environmental protection requirements, and low controllability of the cracking process in the cracking process of tire rubber, and provides a new cracking method for tire rubber. The particularity of waste tires, the gas obtained from the cracking of tire rubber is innovatively combined with microwave cracking after treatment, and recycled for the cracking of tire rubber. By adopting specific method steps and parameters, the cracking method invented can be used in energy The consumption has been qualitatively reduced, the cracking efficiency has been qualitatively improved, and at the same time, the controllability of the cracking treatment process has been improved to avoid the generation of harmful and toxic gases, and the treated liquid oil, gas, and carbon residues are used as fuel. It is used to heat the circulating gas, improve the recycling rate of resources, and reduce the pressure on the environment

Method used

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  • A tire rubber pyrolysis method combined with pyrolysis gas circulation heating and microwave
  • A tire rubber pyrolysis method combined with pyrolysis gas circulation heating and microwave
  • A tire rubber pyrolysis method combined with pyrolysis gas circulation heating and microwave

Examples

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Effect test

Embodiment 1

[0040] A tire rubber cracking method combined with pyrolysis gas circulation heating and microwave, said method comprises the following steps:

[0041] A. Tire rubber pretreatment; mainly to clean the tire rubber and then break it into 25cm 2 left and right small pieces;

[0042] B, the tire rubber pretreated in step A is sent into the composite cracking chamber;

[0043] C. Use a gas heating device to heat the gas medium to 350°C;

[0044] D, the gas heated in step C is continuously fed into the composite cracking chamber and the microwave acts on the tire rubber simultaneously for cracking to obtain a solid product and a mixed gaseous product;

[0045] E, the mixed gaseous product that step D obtains carries out oil-gas separation and removes cracking oil;

[0046] F. Part of the gas obtained through oil and gas separation in step E is passed into the gas heating device described in step C and heated to 350 ° C for step D cyclic cracking, and the rest is discharged, and t...

Embodiment 2

[0048] A tire rubber cracking method combined with pyrolysis gas circulation heating and microwave, said method comprises the following steps:

[0049] A. Tire rubber pretreatment; mainly to clean the tire rubber and then break it into 25cm 2 left and right small pieces;

[0050] B, the tire rubber pretreated in step A is sent into the composite cracking chamber;

[0051] C. Use a gas heating device to heat the gas medium to 700°C; the gas medium is an inert gas;

[0052] D, the gas heated in step C is continuously fed into the composite cracking chamber and the microwave acts on the tire rubber simultaneously for cracking to obtain a solid product and a mixed gaseous product;

[0053] E, the mixed gaseous product that step D obtains carries out oil-gas separation and removes cracking oil;

[0054] F. Pass the part of the gas obtained through oil and gas separation in step E into the gas heating device described in step C and heat it to 700 ° C for step D cyclic cracking, a...

Embodiment 3

[0056] A tire rubber cracking method combined with pyrolysis gas circulation heating and microwave, said method comprises the following steps:

[0057] A. Tire rubber pretreatment; mainly to clean the tire rubber and then break it into 25cm 2 left and right small pieces;

[0058] B, the tire rubber pretreated in step A is sent into the composite cracking chamber;

[0059] C. Use a gas heating device to heat the gas medium to 450°C; the gas medium is water vapor;

[0060] D, the gas heated in step C is continuously fed into the composite cracking chamber and the microwave acts on the tire rubber simultaneously for cracking to obtain solid products and mixed gaseous products; the microwave frequency of cracking is 2450MHz ± 50MHz;

[0061] E, the mixed gaseous product that step D obtains carries out oil-gas separation and removes cracking oil;

[0062] F. Part of the gas obtained through oil and gas separation in step E is passed into the gas heating device described in step ...

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Abstract

Provided is a method for tyre rubber pyrolysis, comprising the following steps: A, pretreating a tyre rubber; B, feeding the tyre rubber treated in step A into a composite pyrolysis chamber (2); C, heating a gas medium with a gas heating device (3) to a temperature of from 350°C to 700°C; D, continuously supplying the gas heated in step C to the composite pyrolysis chamber (2) and allowing the gas to act simultaneously with microwaves on the tyre rubber to conduct pyrolysis to obtain a solid product and a mixed gaseous product; E, subjecting the mixed gaseous product obtained in step D to oil-gas separation to remove a pyrolysis oil; and F, supplying part of the gases obtained in the oil-gas separation in step E to the gas heating device (3) described in step C and heating said part of the gases to a temperature of from 350°C to 700°C so as to recycle the same for reuse in the pyrolysis of step D. The method of the present invention can effectively reduce the energy consumption and time of pyrolysis and save costs.

Description

technical field [0001] The invention relates to a treatment technology for waste tires, in particular to a tire rubber cracking method combining pyrolysis gas circulation heating and microwaves, and belongs to the technical field of waste material treatment and resource utilization. Background technique [0002] With the gradual improvement of people's living standards and the rapid development of the logistics industry, the number of private cars and trucks in my country has increased year by year. The increase in the number of vehicles has driven the development of the economy, and the consumption and wear of automobile tires has also produced a lot of garbage - waste tires. The disposal of waste tires has become a difficult problem in waste disposal. At present, there are mainly the following methods for the treatment of waste tires: landfill method, incineration method, recycling and cracking method, etc. The current cracking methods include thermal cracking, microwave ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/10C10B53/07
CPCC10B53/07C10G1/10Y02P20/143
Inventor 周昆康琪姚波
Owner SICHUAN HOT PULSE MICROWAVE SCI & TECH CO LTD
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