A Rotary Fixed Bed Raw Gas Dust Removal System and Method

Abstract

The invention relates to a dust removal system and method for raw coke oven gas by virtue of a rotary type fixed bed. The dust removal system comprises a dust remover, a filter material regeneration furnace, a high-temperature bucket elevator and a high-temperature vibrating screen, wherein the filter material outlet of the dust remover is communicated with the feeding hole of the filter material regeneration furnace; the discharge hole of the filter material regeneration furnace is communicated with the feeding hole of the high-temperature bucket elevator; the discharge hole of the high-temperature bucket elevator is communicated with the high-temperature vibrating screen; and the high-temperature vibrating screen is respectively communicated with the filter material inlet of the dust remover through a pipeline. According to the dust removal system and method, updating of the filter material is achieved by using the displacement fixing and circumference rotating mechanisms of a turntable; regeneration and sieving of the filter material are achieved through the filter material regeneration furnace, the high-temperature bucket elevator and the high-temperature vibrating screen; and continuous regeneration of the filter material is achieved, thus the problem that the fixed bed filter material is difficult to regenerate due to carbon deposition is effectively solved; the dust removal efficiency is greatly improved; heat loss is reduced; the dust removal method disclosed by the invention is simple in process, stable in operation, low in cost, and suitable for industrial production; continuous regeneration of the filter material can be achieved; and the dust removal efficiency is greatly improved.

Description

technical field

[0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a system and method for dedusting raw gas produced by coal pyrolysis with a rotary fixed bed. Background technique

[0002] Over the years, a series of studies have been carried out at home and abroad on the production of semi-coke, coal tar and gas by pyrolysis of pulverized coal. So far, a large number of pilot tests or industrial tests have been carried out, but almost none of them can produce continuously and stably. However, the main bottleneck restricting this industry is the failure to break through the dust removal of raw gas.

[0003] At present, the coarse dust removal method for raw gas is mainly the cyclone dust collector, but due to the limitation of the cyclone cutting particle size, the dust below 10um cannot be removed, resulting in a large amount of dust in the recovered coal tar, which turns into sludge, and the device cannot operate. ...

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