Device and method for processing kiln ash generated in cement kiln household garbage co-processing

Abstract

The invention provides a device and method for processing kiln ash generated in cement kiln household garbage co-processing. A raw material vertical mill is connected to a cyclone dust collector and then connected to a big cloth bag dust collector. The bottom of the big cloth bag dust collector is connected to a spiral reamer through a chain conveyor, an elevator, and an ash collecting chamber. The spiral reamer is connected to an impeller feed machine, and the impeller feed machine is connected to a decomposing furnace. According to the method, kitchen garbage and cement raw materials are fed into the raw material vertical mill and grinded, the combustible garbage is fed into the decomposing furnace, after dust absorption, the combustible garbage is delivered to a kiln and burned to obtain clinker; the dust in the high temperature flue gas from the cyclone dust collector is absorbed by the big cloth bag dust collector, and the collected kiln ash is calcined in the decomposing furnace. After improvement, the daily garbage processing amount is increased from 30-50 tons to 200-300 tons, the daily garbage processing efficiency is largely improved, the normal operation of the garbage processing equipment is guaranteed, and the pollution caused by the garbage to the city is reduced.

Description

technical field [0001] The invention relates to the technical field of cement clinker calcination, in particular to a processing method for kiln dust produced by co-processing household garbage in a cement kiln. Background technique [0002] The cement kiln co-processing domestic waste technology is to divide the municipal domestic waste into combustibles and kitchen waste after being fully processed according to a certain process. Feed the raw meal vertical mill together with the measured cement raw material and grind it into cement raw meal. Since the kitchen waste sorted from the garbage contains some oily organic matter, the oily organic matter has an obvious grinding aid effect after entering the raw meal mill, and it is very easy to have over-grinding phenomenon under the existing process conditions; at the same time, the combustibles are burning The resulting fly ash particles are light and fine. When the gas-solid separation is carried out in the preheating system, ...

AI Technical Summary

Problems solved by technology

Since the kitchen waste sorted from the garbage contains some oily organic matter, the oily organic matter has an obvious grinding aid effect after entering the raw meal mill, and it is very easy to have over-grinding phenomenon under the existing process conditions; at the same time, the combustibles are burning The resulting fly ash particles are light and fine. When the gas-solid separation is carried out in the preheating system, these light and fine kiln dust will be enriched in the preheater system, which will increase the load of the bag filter. , reducing the heat transfer efficiency of the preheater; in addition, these fine kiln dust even adhere to the inner wall of the zipper machine and the hoist, seriously affecting the stable operation of production

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