Comprehensive Research On Dust Removal Of Coal Conveying System In Guangxi Guigang Power Plant

Thermal power plant coal handling system ensures the safe operation of the plant, is the lifeblood of the thermal power plants. It contains fired unloading, transport, screening, crushing, conveying and other complex aspects. Coal handling system is easy to produce a lot of dust, which not only undermines the work environment, affect health of workers, but also bring safe hidden trouble, affect the production process. So, it is of great significance to control dust.According to the dust problem produced by coal handling system, this paper analyzed the reason and introduced the conventional dust suppression and dust removing facilities such as water spray dust suppression, electrostatic precipitation, wet dust collection etc. And described the advantages and disadvantages of these facilities, put forward the corresponding improvement measures.According to the research on dust physical properties and a variety of dust removal method, this paper designed a comprehensive treatment plan for Guangxi guigang power plant. We mainly used the prevent dust suppression technology to transform the coal crusher chamber including installing the streamlined coal drop pipe, double seal guide chute, unpowered inertia dust removal unit etc. After modification, the dust concentration in coal crusher chamber decreased from 30~50mg/m3 to 6~9mg/m3, eased the phenomenon of spray powder, and improved the environment coal crusher room, reduced the dust concentration greatly in transfer station.