Vetical cracking tower for cracking used tyre and recovering industrial carbon black and fuel oil

Abstract

A vertical cracking tower for cracking used tyre and recovering industrial carbon black and fuel oil is composed of sealed vertical tower body, upper scrape stirrer, tyre feeding port, cracked gas outlet, upper hollow heating disc, lower hollow cooling disc, lower scrape stirrer and carbon black discharging port. Its advantages are convenient regulation and control, high quality and safety, liguht weight, and high crakcing performance.

Description

technical field [0001] The invention relates to a vertical cracking tower used for cracking waste tires to recover industrial carbon black and fuel oil. Background technique [0002] With the rapid development of the automobile industry, the number of scrap tires increases rapidly every year. Most of these waste tires are regarded as open-air dumps or simply landfilled and incinerated. The accumulation of waste tires not only takes up space and arable land, but also pollutes the environment, breeds mosquitoes, and infects diseases. At the same time, a large number of piles of waste tires have also buried hidden dangers for fires. Canada, the United States, Japan and other countries have reported fires caused by burning waste tires. Although landfill can avoid the occurrence of fire, it will reduce the cultivated land and pollute the groundwater. Incineration will increase the content of harmful substances such as carbon dioxide, nitrogen dioxide,...

AI Technical Summary

Problems solved by technology

Due to the dynamic sealing problem of the large-diameter rotary cylinder in this structure, it is not easy to adopt a segmented heating method, and if only a single-stage heating method is used, the cracking reaction concentration area is the low temperature area of ​​the flue gas. A certain cracking temperature must have a higher inlet flue gas temperature

When the processing capacity increases and the length of the pyrolysis furnace body lengthens, the problem becomes more prominent

In addition, there is also a dynamic seal between the spiral belt on the outer wall of the body and the shell, and the flue gas flow rate in the cracking reaction is generally as high as 20m / s or more, so the flue gas is prone to short circuit, and the heat transfer coefficient will be greatly reduced if it is not properly controlled.

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