Ash sealing device for preventing low-temperature gas from entering high-temperature dust remover

Abstract

The invention discloses an ash sealing device for preventing low-temperature gas from entering a high-temperature dust remover. The ash sealing device comprises an ash bucket of the dust remover, an ash discharging chamber and an ash conveying device which are arranged from top to bottom, wherein an ash column with certain height is retained in the ash bucket; a sealing valve is arranged between the ash bucket and the ash discharging chamber; the ash conveying device comprises an ash conveying pipeline and an ash cleaning mechanism in the ash conveying pipeline. The ash column is in a closely dense state, and certain pressure intensity is formed at the bottom of the ash bucket by the ash column; furthermore, sealing is executed by ingeniously using ash of the dust remover, so that the effect of turning waste into wealth is achieved, the technical effect of well preventing low-temperature gas from entering the dust remover is achieved, and the utilization rate of the dust remover is increased.

Description

technical field [0001] The invention belongs to the technical field of ash unloading devices for dust collectors, and in particular relates to an ash sealing device for preventing low-temperature gas from entering a high-temperature dust collector. Background technique [0002] At present, high-temperature dust-containing gases are often produced in chemical, petroleum, metallurgical and other industries, and dust collectors are the most important dust removal process equipment. Dust collectors used in special flue gas working conditions (such as containing coal gas, etc.) have very high air tightness requirements due to the need to maintain high temperature conditions, and the ash unloading part is one of the key points to ensure air tightness. The currently adopted ash unloading method is a manual flapper valve and an electric air locker. When dealing with special flue gas conditions, the ash unloading method of the dust collector is a manual flapper valve and an electric ...

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Problems solved by technology

The ash unloading device for the above-mentioned dust collector is equipped with two asynchronous pneumatic valves and an intermediate chamber, so that the ash first enters the intermediate chamber through the first pneumatic valve, then closes the first pneumatic valve and then opens the second pneumatic valve to discharge the ash. In order to ensure that the dust collector will not produce air leakage during the ash unloading process, the principle design is feasible, but the following defects exist in the actual use process: 1) Normal operation will generate a large amount of deposited dust, and the dust unloaded from the intermediate bin of ash unloading A large amount of dust accumulates and needs to be transferred, but the speed of self-weight ash unloading is slow, and the removal is not complete; 2) The valve closing effect is not good under high temperature and high pressure conditions, and there are often cases of lax closing, which is difficult to implement effectively; Further improvements and innovations have been made in ash unloading and anti-low temperature gas entry to ensure safe operation of equipment

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