Dust control system and method of underground coal-unloading ditch

Abstract

The invention provides a dust control system and method of an underground coal-unloading ditch. The system comprises an air supply vertical shaft, an air supply pipe, exhaust openings, an air returning pipe and an exhaust vertical shaft; the air supply vertical shaft introduces fresh air on the ground into the air supply pipe, the air supply pipe is connected with the air supply vertical shaft, and extends on the upper end of the underground coal-unloading ditch, air supply openings are formed in the lower end of the air supply pipe at intervals, the multiple exhaust openings are formed in thelower side of the side wall of the underground coal-unloading ditch at intervals, air flow flowing from top to bottom is formed in the underground coal-unloading ditch, the air returning pipe is arranged on the exhaust opening, the air returning pipe communicates with the exhaust vertical shaft, and exhausted gas is introduced into a dust removal device. Through the system and method, it can be ensured that the air cleanliness degree of the channel pedestrian area can be met.

Description

technical field [0001] The present disclosure relates to a dust control system and method for an underground coal unloading ditch. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] At present, the design of dust control in the underground corridor (coal unloading ditch) has always been a difficult point in the industry. Since the dust pollution source is a mobile pollution source, it is difficult to control it. So far, there has been no effective solution. The industry has used it The design options are as follows: [0004] 1. The design scheme of mechanical air intake and mechanical exhaust. This scheme adopts the ventilation method of mechanical air supply by the fan box and mechanical exhaust by the roof fan through the ventilation shaft. Since the roof fan is used for mechanical exhaust, this solution cannot solve the problem of dust ...

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Problems solved by technology

Excessive moisture will affect boiler efficiency

If the follow-up dust removal equipment is a bag filter, it is easy to cause compaction of the bag filter and affect the dust removal effect of the bag filter

The water quality requirements are high, the nozzles are easy to block and wear, the water spray system needs to be protected, and the nozzles need to be replaced

At the same time, it is very unfavorable from the perspective of safe and economical operation of the power plant, because too much water in the coal will affect the drying output of the pulverizing system and lead to the phenomenon of arching of the raw coal bunker and coal canopy.

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