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Cold quenching treatment method of waste antomobile tyre

A kind of automobile tire, technology of treatment method

Inactive Publication Date: 2009-09-09
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method usually has the following disadvantages: the toughness of waste tires is relatively high at room temperature, the crushing energy consumption is large, the efficiency is low, it is difficult to produce fine powder, a large amount of heat is generated, the rubber powder is aged and deformed, and the quality is deteriorated. The advantage is that the equipment is simple and the investment less, low cost
However, operating at high temperature not only has high processing costs, but also produces a lot of pyrolysis gas and oil. Due to the complex composition, it is easy to produce a large amount of toxic and harmful gases. It must be equipped with strict environmental protection measures, so it is difficult to use and treat.
[0005] Looking at the existing treatment methods, the common problem is that the cost of the treatment process is high, secondary pollution occurs, and resource reuse is difficult

Method used

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  • Cold quenching treatment method of waste antomobile tyre

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 As shown, a waste automobile tire 1 (tire diameter of 0.5 meters and thickness of 0.2 meters) is placed flat in the melting furnace 2 as a whole. The melting furnace is a customized stainless steel cylindrical melting furnace with an inner diameter of 1.2 meters and an effective volume of 1.1 cubic meters. It is jacketed and heated by electricity. After the melting furnace is heated to 330°C by electric heating, the waste tires stay in the furnace for 20 minutes to be heated and softened. The hydrocarbon, alcohol, and organic acid pyrolysis gas 8 generated during the heating and softening process enters the lower part of the combustion furnace 9 from the top of the melting furnace and is mixed with air 10 and burned. The softened tire is discharged from the bottom of the melting furnace and quickly enters the cold quenching tank 3 containing 24°C water from the top, so that the softened tire is quickly cooled to 35°C to achieve the purpose of cold quenching...

Embodiment 2

[0019] The device and process are the same as in Example 1. The different places are as follows: the melting furnace temperature is 350°C, the residence time is 13 minutes, the cooling water temperature is 15°C, the cold quenching target temperature is 25°C, and the temperature of the hot flue gas 11 produced by the combustion furnace is 672°C. The yield of crushed solid matter (excluding steel wire) was 78%.

Embodiment 3

[0021] The device and process are the same as in Example 1. The differences are as follows: 2 tires, melting furnace temperature of 250°C, residence time of 60 minutes, cooling water temperature of 25°C, and cold quenching target temperature of 30°C. Due to too little pyrolysis gas, there is no burning phenomenon. The yield of crushed solid matter (excluding steel wire) was 93%.

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Abstract

The waste tyre cold quenching process belongs to the field of solid waste treating pyrolysis technology. The process includes pyrolysis of waste tyre in smelting furnace at 250 450 deg.c, cold quenching in cooling water tank at 1-70 deg.c, taking out and draining, beating or extruding to crush and separate rubber from steel wire, coking with the separated organic matter and reutilizing the steel wire. The said process separates steel from rubber effectively at low cost to utilize waste tyre resource.

Description

Technical field [0001] The invention relates to a cold quenching treatment method for waste automobile tires, which belongs to the pyrolysis technology in the field of solid waste treatment. Background technique [0002] With the rapid development of the automobile industry, the storage of waste tires in my country is increasing, and the huge amount of waste tires is putting more and more pressure on the environment. Because waste tires have strong heat resistance, mechanical resistance, and are difficult to degrade, direct stacking not only occupies land, but is prone to fire, and is called "black pollution". How to recycle, reduce and make waste tires harmless and prevent environmental pollution is not only a global problem. At the same time, with the shortage of raw material oil and natural rubber resources in the tire industry, the recycling and utilization of waste tires is also related to the sustainable development of the world. The strategic issue of my country is also a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B29B17/00C08J11/00
CPCY02W30/62
Inventor 张书廷刘勇王乔力
Owner TIANJIN UNIV