Pulverizing system and process for reducing ash and improving quality of circulating materials in medium-speed coal mill in coal-fired power plant
A coal-fired power plant and pulverizing system technology, applied in the direction of block/powder fuel preparation, fuel supply, solid fuel pretreatment, etc., can solve the problem of difficult operation of circulating material diversion, reduce the internal circulation rate of the mill and wear, reduce adverse effects, and improve the quality of qualified pulverized coal
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[0021]The present invention will be described in detail below with reference to the accompanying drawings:
[0022]figure 1It is shown as a powder process for the lifting of circulating materials in the medium speed coal mill in coal-fired power plant, mainly including the original coal bun 1, belt conveyor 2, medium speed coal 3, pulverized coal classifier 4, cyclone grading The pulsating valve 6, a pulsating air flow selection bed 7, a mesh warehouse 8, a boiler 9, and the inlet port of the medium-speed coating machine 3 is connected to the unloading port of the original coal bin 1 through the belt conveyor 2, which is connected. The discharge port of the medium speed mill 3 is connected to the feed port of the cyclone classifier 5, and the overflow port of the cyclone classifier 5 is connected to the boiler 9 feed port, the bottom of the cyclone classifier 5 and the pulsation The gas flow is connected to the gas flow, and the coal discharge port of the pulling air flow indexed bed 7...
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