Pulverized coal preparation device based on pulverized coal combustion furnace, rotary dryer and mill

Abstract

The invention discloses a pulverized coal preparation device based on a pulverized coal combustion furnace, a rotary dryer and a mill, comprising a pulverized coal combustor, a pulverized coal combustion furnace, a coal feeding pipe, a rotary dryer, a mill, an elevator and a pulverized coal bin, wherein the pulverized coal combustor, the pulverized coal combustion furnace, the rotary dryer, the miller, the elevator and the pulverized coal bin are successively connected; the coal feeding pipe is communicated with the rotary dryer; the pulverized coal combustor injects the pulverized coal into the pulverized coal combustion furnace to be combusted; heat enters the rotary dryer to dry the coal entering the rotary dryer from the coal feeding pipe; the dried coal is ground in the mill; and the ground pulverized coal enters the elevator and is elevated into the pulverized coal bin.

Description

technical field [0001] The invention is a pulverized coal preparation device based on a pulverized coal combustion furnace, a rotary dryer and a mill. Background technique [0002] At present, my country's main energy is still dominated by coal. Except for large-scale power stations and power plants that use advanced pulverized coal combustion technology (the burnout rate of pulverized coal is as high as 99%), others are still dominated by traditional chain grates and fluidized fluidized furnaces. The chain grate burnout rate is less than 85%, which wastes energy and seriously pollutes the environment. Combustion of pulverized coal is energy-saving and environmentally friendly, and it is a general trend of social development. However, the existing coal grinding device has complex structure, inconvenient operation, and it is difficult to realize automatic control. Contents of the invention [0003] The invention provides a pulverized coal preparation device based on a pulv...

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Problems solved by technology

[0002] At present, my country's main energy is still dominated by coal. Except for large-scale power stations and power plants that use advanced pulverized coal combustion technology (the burnout rate of pulverized coal is as high as 99%), others are still dominated by traditional chain grates and fluidized fluidized furnaces. The burnout rate of the chain grate is less than 85%, which wastes energy and seriously pollutes the environment

However, the existing coal grinding device has complex structure, inconvenient operation, and it is difficult to realize automatic control.

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