Rotary kiln system capable of incinerating waste tires

Abstract

The invention relates to rotary kilns on a dry cement production line, in particular to a rotary kiln system capable of incinerating a junked tire. The rotary kiln system comprises tire conveying equipment and a rotary kiln, a first feeding scraper-trough conveyer is arranged below a conveying terminal of the tire conveying equipment, a lower scraper-trough conveyer opening of the first feeding scraper-trough conveyer is connected with a feeding port of a power-driven triple air blockage valve, a discharge port of the power-driven triple air blockage valve is connected with a feeding port of a pneumatic gate valve, a discharge port of the pneumatic gate valve is connected with an upper scraper-trough conveyer opening of a second feeding scraper-trough conveyer, a lower scraper-trough conveyer opening of the second feeding scraper-trough conveyer is connected with a feed-end chamber of the rotary kiln, and a feeding point on the feed-end chamber is located at the position enabling the tire to exactly fall in the center of the rotary kiln. According to the system, material conveying can be carried out by adjusting conveying speed and weight metering, hot air losses and exhaust emissions generated when the junked tire enters the kiln can be avoided, the fed tire can exactly fall in the center of the kiln, combustion time and combustion temperature are guaranteed, and it is guaranteed that the ash content of the tire after combustion is fully mixed and reacts with materials in the kiln.

Description

technical field [0001] The invention relates to a rotary kiln on a dry process cement production line, in particular to a rotary kiln system capable of incinerating waste tires. Background technique [0002] The use of cement rotary kiln to incinerate hazardous waste has been widely practiced in the world. Many power plants, paper mills, steel mills and smelters in foreign countries use waste tires as alternative fuels. China's research in this area started relatively late, and only a few manufacturers have carried out test burning experiments. So far, there is no such thing in China. A cement plant has set up an industrial waste tire incineration process system. [0003] The rotary kiln in the cement plant has ideal incineration conditions: high incineration temperature (the highest flame temperature can reach 1800°C), long residence time in the kiln for waste tires (up to 25 minutes), and can always be in motion together with the raw materials, which can make Waste tires...

AI Technical Summary

Problems solved by technology

Many power plants, paper mills, steel mills and smelters in foreign countries use waste tires as alternative fuels. China's research in this area started relatively late, and only a few manufacturers have carried out test burning experiments. So far, there is no such thing in China. A cement factory has set up an industrial waste tire incineration process system

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