A dust removal device for slag unloading in slag bin or ash unloading in ash store

Abstract

The invention discloses a dust removal device used for unloading slag of a slag bin or unloading dust of a dust silo. The dust removal device comprises a sealed housing, a vehicle entrance-exit and a dust isolating device, wherein the inner cavity of the sealed housing forms a flying dust blocking space which is suitable for a vehicle to enter and exit around an unloading hole of the slag bin or the dust silo; the vehicle entrance-exit is formed in the side wall of the sealed housing, and is used for allowing a slag transportation vehicle or a dust transportation vehicle to pass; and the dust isolating device can be used for sealing the vehicle entrance-exist when the vehicle unloads the slag or the dust. The dust removal device can completely isolate the flying dust from the outside, is less in water consumption, and is low in energy consumption and equipment maintenance charge, so that air disturbance formed by slag unloading of the slag bin or the dust unloading of the dust silo is prevented from generating influence on the dust removal device, and therefore, the technical problem that the slag bin or the dust silo generates much flying dust is solved.

Description

technical field [0001] The invention belongs to the technical field of dedusting devices, and in particular relates to a dedusting device for unloading slag from a slag bin or ash from an ash store. Background technique [0002] There has been no effective solution to the unloading of slag from the slag storehouse or the dust from the ash storehouse, which has always plagued the staff of the power plant and seriously affected the environment of the plant area. At present, the slag discharge system of thermal power plants often adopts the method of dust removal by dust suction fan. The dust suction fan is installed next to the bulk machine, and is equipped with a bag filter. Blow the cloth bag to collect the dust. Dust is removed by a vacuum fan with a power of at least 4KW. The system structure is complicated, the power consumption is large, and the maintenance cost is high. At the same time, the slag bin equipped with a dust suction fan is affected by air disturbance, and ...

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned patent documents, there are the following problems: 1) the negative pressure of the dust suction fan is used to suck dust, which will generate strong air disturbance at the moment of unloading, which will cause a large amount of dust and destroy the fog curtain formed by the spray equipment, so that The dust is not enough to be sucked away by the negative pressure suction pipe connected to the dust collection hood, that is, it overflows from the gap between the dust collection hood and the bucket of the ash truck, and the dust collection effect is poor; 2) The position of the discharge port of the slag bin is Fixed, in order to fill up the vehicle, the position of the vehicle needs to be moved. Setting the spray head on the outside of the dust collection hood cannot completely isolate the dust from the outside world; the nozzles installed around the discharge port need a large flow rate to overcome Effect of Air Turbulence on Fog Curtain

A large amount of water sprayed by the nozzle will cause problems such as slippery ground, dusty car tires, environmental pollution, etc., and waste of water resources; high maintenance costs

[0005] With the rise of calls for smog control and the improvement of national environmental protection awareness, power plants have spared no expense in controlling pollution sources, making coal-fired emission standards lower than gas, which has reached an extremely high level, but there has been no effective solution to the problem of unloading slag and dust.

Due to the poor dust absorption effect and high operation and maintenance costs of the existing technology, most power plants are abandoned and become decorations.

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