Method for continuously thermal decomposing waste tire using gas burning kiln

Abstract

The process of continuously thermal decomposing waste tire in a gas burning kiln belongs to the field of solid waste treating technology. The process includes setting cleaned and air dried waste tire and catalyst in the thermal decomposing container on a push plate, pushing the container with a hydraulic device into the tunnel kiln via a sealing cabin, moving the push plate on rollers and pushing out the thermal decomposed product; condesing the gaseous product exhausted from the kiln top in a condensator to obtain mixed fuel oil or returning the gaseous product to the kiln for use as heat source; and collecting the carbon slag from the container for preparing carbon black filler and other material. The present invention can operate continuously, has great treating capacity, low power consumption and other advantages, and may be used in treating other solid wastes.

Description

technical field [0001] The invention relates to a method for continuously pyrolyzing waste tires using a gas kiln, and belongs to the technical field of solid waste, especially waste tire treatment methods. Background technique [0002] With the development of society, the consumption of rubber products such as tires is increasing year by year. At the same time, the massive disposal of waste tires has brought enormous pressure to the environment. In 2004, China's rubber consumption reached 4.2 million tons, becoming the world's largest rubber consumer for three consecutive years. Nearly 70% of the total rubber consumption is used to produce tires. In 2004, China's tire output was 239 million. At the same time, the generation of waste tires has increased sharply, exceeding 112 million pieces. It is estimated that by 2010, the production of waste tires in my country will reach more than 200 million. At present, our country still mainly treats reclaimed rubber with high ene...

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Problems solved by technology

[0005] It can be seen from the above that the current waste tire pyrolysis technology basically uses waste tire fragments as the feed material, which requires that the waste tires should be crushed first when the raw materials are processed, and as tires are an elastic body, it is very difficult to crush and can be crushed. The consumption is very huge; there are also a large part of the technology that adopts intermittent operation, which has small processing capacity, low efficiency, and is prone to secondary pollution; while the technology that adopts continuous operation, in order to prevent coking, it is necessary to use devices such as stirring and spiral to continuously Clean up coking, which makes the structure of the reactor complex, and it is difficult to achieve sealing; most of the heat source in the pyrolysis process requires external energy, which is not only costly, but also easy to cause new pollution

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