A method for preparing carbon black by treating waste tires with a horizontal rotary pyrolysis processor

Abstract

The invention relates to the technical field of preparation of carbon black by cracking processing of waste tires, and in particular relates to a method for preparing carbon black by processing waste tires by a horizontal rotary cracking processor. According to the method, the waste tires are processed by the horizontal rotary cracking processor, and by controlling parameters of temperature, pressure and the like in the processor, 8-10 tons of the waste tires can generate 100-200 jins of light oil, 50-60 jins of heavy oil and 4.5-5.5t of coarse carbon black, thereby reducing the consumption of resources; moreover, by processing the prepared coarse carbon black by using an activating agent and a desulfurizing agent, the carbon black is relatively high in quality, relatively strong in activity, relatively less in impurity and relatively high in purity, and can be used as a chemical raw material applied to various fields.

Description

technical field [0001] The invention relates to the technical field of cracking and treating waste tires to prepare carbon black, in particular to a method for preparing carbon black by treating waste tires with a horizontal rotary cracking processor. Background technique [0002] With the rapid development of the automobile industry, the annual output of waste tires has reached more than hundreds of millions, which has brought serious problems to environmental pollution. [0003] For this reason, some researchers recycle waste tires, and reuse the beneficial resources in waste tires after making chemical raw materials from waste tires; for example, after crushing waste tires, they are prepared into rubber powder, and then the rubber powder After the activation treatment, it is prepared into reclaimed rubber. However, due to the relatively low performance of reclaimed rubber in traditional technology, low tensile strength, and low elongation at break, it is difficult to recy...

AI Technical Summary

Problems solved by technology

[0003] For this reason, some researchers recycle waste tires, and reuse the beneficial resources in waste tires after making chemical raw materials from waste tires; for example, after crushing waste tires, they are prepared into rubber powder, and then the rubber powder After the activation treatment, it is prepared into reclaimed rubber. However, due to the relatively low performance of reclaimed rubber in traditional technology, low tensile strength, and low elongation at break, it is difficult to recycle waste tires to produce reclaimed rubber. Technology is hindered, therefore, a large number of researchers use high temperature treatment to thermally crack waste tires to prepare products such as fuel oil, gas and carbon black

However, the traditional pyrolysis treatment process is to crush or cut the tire into particles, and then carry out pyrolysis treatment in a high temperature environment. Generally, the temperature is first raised to about 200-300°C, and after a certain period of time, the temperature is adjusted. At about 400-700°C, the waste tires are further cracked, and the purpose of recycling the beneficial resources in the waste tires is achieved; however, the above-mentioned treatment in the prior art will not only make a large amount of polluting substances in the waste tires volatilize into the air, It will cause secondary pollution to the environment, and it will also make the amount of fuel oil, gas and carbon black obtained is relatively small, and the quality is low, resulting in high processing costs; especially the ash content in carbon black is high, and the content of sulfur components Higher, resulting in the limitation of the application range of carbon black products obtained from waste tire recycling, and in the process of pyrolysis, it is often necessary to raise the temperature to above 400 ° C, which will result in greater energy consumption, and will also affect the Carbon-carbon bonds or carbon-oxygen bonds are seriously damaged, but it is difficult to destroy sulfur-sulfur bonds and sulfur-carbon bonds, which will affect the quality of the obtained carbon black and hinder the wide-scale application of carbon black products