Bypass exhaust device and treatment method for cooperative household refuse treatment of cement kiln

Abstract

The invention provides a bypass exhaust device and a treatment method for cooperative household refuse treatment of a cement kiln. A high pressure fan is connected with a collecting box through a pipeline, and the collecting box is connected with a cyclone dust collector connected with a multitubular air cooled box. The bottom of the multitubular air cooled box is connected with the upper portion of a dust remover through a pipeline; and the bottom of the dust remover is connected with a dust collecting bin through a chain conveyor. The treatment method comprises the steps that high-temperature smoke discharged out of a smoke chamber enters the collecting box; the cooled smoke enters the cyclone dust collector through the pipeline; collected dust is recovered by the smoke chamber, and discharged waste gas enters the multitubular air cooled box; and dust collected by the multitubular air cooled box is fed into the dust collecting bin through the chain conveyor, and the dust in the dust collecting bin can be transported away through a bulk vehicle to serve as cement mixtures or cement raw materials. The content of alkali in the kiln exhaust smoke drops to 0.43% from 0.62%, the content of sulphur drops to 0.2% from 0.36%, and the content of chlorine drops to 0.31% from 0.76%.

Description

technical field [0001] The invention relates to the technical field of cement production and manufacturing, in particular to a bypass ventilation device for co-processing household garbage in a cement kiln. Background technique [0002] The technology of cement kiln co-processing domestic waste is to divide urban domestic waste into combustibles and kitchen waste after full treatment according to the specified process. The ratio and the measured cement raw materials are fed into the raw material vertical mill to grind into cement raw material, and then the raw material is sent to the kiln to be calcined into cement clinker. In the process of calcination of garbage combustibles and kitchen waste into cement clinker, a large number of compounds containing alkali, chlorine and sulfur and low melting point will be produced. The crust adheres to the feeding pipe and other parts, and the thicker the crust, it seriously affects the ventilation in the kiln, increases the operating ...

AI Technical Summary

Problems solved by technology

In the process of calcination of garbage combustibles and kitchen waste into cement clinker, a large number of compounds containing alkali, chlorine and sulfur and low melting point will be produced. The crust adheres to the feeding pipe and other parts, and the thicker the crust, it seriously affects the ventilation in the kiln, increases the operating resistance of the kiln system, affects the normal production of the cement kiln, and even leads to the shutdown of the kiln; at the same time, frequent cleaning of the crust also increases the number of employees. Labor intensity and unsafe factors

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