Low-pollution coal pulverizing system for thermal power generation

Abstract

The invention relates to the field of coal pulverizing for thermal power generation, in particular to a low-pollution coal pulverizing system for thermal power generation, which comprises a rack, a raw coal hopper, a coal feeder and a coal mill, a discharging device is further arranged at the output end of the coal mill and comprises a connecting shell, a rotating shaft, a first motor, air blowing blades and a filter screen. The discharging device is connected with the output end of a coal mill through a first conveying channel on a connecting shell to convey powdery coal powder, the coal powder is conveyed into a second conveying channel through the first conveying channel, at the moment, a first motor drives a rotating shaft and an air blowing blade to rotate, the air blowing blade blows air to blow the powder to a filter screen in front, and then the powder is conveyed into the second conveying channel. Large briquettes are blocked through the first through holes with the fixed diameter in the filter screen, the large briquettes and a small amount of processed pulverized coal are conveyed from the first discharging port, qualified powdery pulverized coal can penetrate through the filter screen to be conveyed through the second discharging port, and the technical problem of how to screen the briquettes which are not powdery is solved.

Description

technical field [0001] The invention relates to the field of thermal power generation pulverizing, in particular to a low-pollution thermal power generation pulverizing system. Background technique [0002] With the improvement of industrial productivity, people's demand for energy has greatly increased, and more and more power plants are being built. The most existing power plants are still thermal power plants, and thermal power generally refers to coal-fired generator sets. Coal-fired power generation, as the name implies, is to burn coal in the furnace to heat water to turn it into steam, and then the steam enters the steam turbine to do work, which drives the generator rotor to rotate to generate electricity. Before the coal, a pulverizing process is required to pulverize the coal. [0003] Existing pulverizing systems for thermal power generation, such as a new pulverizing system for thermal power plants disclosed in Patent No. CN202021231303.1, can reduce the cloggi...

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Problems solved by technology

[0003] Existing pulverizing systems for thermal power generation, such as a new type of pulverizing system for thermal power plants disclosed in Patent No. CN202021231303.1, can reduce the blockage of coal at the pulverizing port through the transmission device, so that the pulverized coal can be transported to the furnace Combustion, but there must be some large particles that cannot be pulverized in the pulverized coal, which will reduce the power generation effect

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