Method for feeding fly ash in electric power plant

A power plant fly ash and fly ash technology, which is applied in chemical instruments and methods, electrostatic effect separation, human health protection, etc., can solve the problems of large occupied site area, environmental pollution of the factory area, and large amount of maintenance, etc. The effect of small area, low maintenance and compact arrangement

Inactive Publication Date: 2008-08-27
国能河北衡丰发电有限责任公司
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Problems solved by technology

Therefore, the method of conveying fly ash has the disadvantages of many equipments, a large area occupied by the site, a large amount of maintenance, and the leakage of the ash conveying bin pump can easily cause environmental pollution in the factory area.

Method used

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  • Method for feeding fly ash in electric power plant

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing, the delivery method of the power plant fly ash provided by the invention is described in further detail:

[0015] As shown in the figure is a schematic flow chart of the fly ash conveying method in a coal-fired power plant, that is, the fly ash flows directly into the branch through the ash hopper switching valves 5, 6, 7, and 8 of the four electrostatic precipitators 1, 2, 3, and 4. In the ash conveying pipe 9 of election system. Wherein the air separation system is composed of the ash conveying pipe 9, two sets of coarse and fine fly ash air separation machines 13, 14 and fan 10 connected in series. Under the action of the air distribution of the fan to the ash conveying pipe 9, the fly ash and the flowing air in the pipe are fully mixed to form a dilute gas-solid two-phase fluid, and the dilute gas-solid two-phase fluid in the ash conveying pipe 9 Under the action of the power of the selection system, it is first trans...

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Abstract

A method for delivering powder coal ash of electric power plant includes such steps as discharging the powdered coal ash from the ash hopper of electric duster, delivering it via the wind distributing pipe communicated with the air inlet and outlet of lower, wind separation by the wind separation system composed of serially connected at least two wind separation unit for separating coarse powdered coal ash from fine one, and delivering the coarse powdered coal ash and fine one into respective ash storehouses by respective pump. Its advantages are compact structure, less possessed ground, and no environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of material conveying, and in particular relates to a method for conveying fly ash in the power generation process of a thermal power plant. Background technique [0002] At present, coal-fired thermal power plants use the dry removal and dry discharge method to transport the fly ash produced after being discharged by the electrostatic precipitator, that is, connect dozens of ash delivery bin pumps at the lower end of each electrostatic precipitator, and directly The fly ash is transported to the ash store, and then the fly ash in the ash store is classified and processed according to the size of the ash particles by independent sorting equipment. In the conveying process of the fly ash, since the method of conveying first and then sorting is adopted, more than a dozen ash conveying bin pumps must be connected to the lower end of each electrostatic precipitator (for example, a 300,000-kilowatt generator set)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B9/00B03C3/017
CPCY02A50/2351
Inventor 杨同贺康世杰张永红郭邢军郑占国胡兰海李海涛张燕飞
Owner 国能河北衡丰发电有限责任公司
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