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Coal yard fire coal control system and method

A technology of control system and pulverizing system, applied in combustion method, controlled combustion, block/powder fuel preparation, etc., can solve the problems of coal-fired inventory deviating from the optimal inventory of power plants, lack of scientific decision support, etc.

Active Publication Date: 2021-04-20
国电电力邯郸东郊热电有限责任公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the coal-fired control strategy of thermal power plants is based on historical experience and lacks scientific decision-making support, which makes the coal-fired inventory not or seriously deviates from the optimal inventory of the power plant

Method used

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  • Coal yard fire coal control system and method
  • Coal yard fire coal control system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0128] This embodiment provides a coal blending and burning system, wherein 6 temperature detectors 21 and 6 showers 22 are set in the stacking system, and the 6 temperature detectors 21 and 6 showers 22 are all based on coal piles. Arranged around the center. Wherein the temperature detector 21 and the shower 22 are all within the normal range to ensure that the temperature in each zone of the coal pile. The coal quality detector is installed in the coal bunker so that workers can check the quality of coal in the coal pile at any time.

Embodiment 2

[0130] This embodiment provides a coal blending and burning system, wherein the gas outlet of the coal mill 11 is provided with a pulverization system sensor 13, and the sensor 13 monitors the outlet temperature, outlet coal fineness and The primary wind speed is transmitted to the control unit 30 . The combustible gas detection equipment 14 is arranged on the ceiling of the room where the coal mill 11 is located, and multiple shielding gas systems 15 can be installed and evenly distributed in the room to ensure that the room is filled with shielding gas at the fastest speed. The protective gas can be nitrogen and other inert gases. Explosion-proof doors 16 are arranged around the coal mill 11, generally with 1-3 floors, so as to reduce the explosion range as much as possible.

Embodiment 3

[0132] This embodiment provides a coal blending combustion system, wherein lean coal powder and bituminous coal powder are respectively blown into the swirl burner from two feed channels at a wind speed of 50 m / s according to a mass ratio of 1:1. The two air streams entering the swirl burner are blown in parallel through the stirring paddle in the mixing chamber, so that the stirring paddle rotates to mix the lean coal powder and bituminous coal powder in the air stream. Simultaneously, two air streams are designed to leave the mixing chamber from one air outlet to further mix the two pulverized coals.

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Abstract

The invention relates to a coal yard fire coal control system and method, relates to the technical field of coal yard fire coal control, and aims to solve the problems that a fire coal control strategy of a thermal power plant lacks scientific decision support. The coal yard fire coal control system comprises a coal blending combustion system, a control unit and a data acquisition unit, wherein the coal blending combustion system comprises a coal pulverizing system and a combustion system; the coal pulverizing system comprises a coal mill and a coal pulverizing system sensor; the coal pulverizing system sensor is used for detecting a first coal pulverizing parameter of an outlet of the coal mill; the combustion system comprises a first feeding channel for introducing meager coal powder and a second feeding channel for introducing bituminous coal powder; the data acquisition unit is used for acquiring the coal pulverizing parameter of the coal pulverizing system and a combustion parameter of the combustion system; the control unit can control feeding parameters of the first feeding channel and the second feeding channel and send an optimized second pulverizing parameter instruction to the coal mill according to a preset pulverizing parameter and the first pulverizing parameter. The coal yard fire coal control system and method can scientifically and effectively reduce the fire coal cost.

Description

technical field [0001] The invention relates to the technical field of coal burning control in coal yards, in particular to a coal burning control system and method in coal yards. Background technique [0002] Fuel management is the basic work of thermal power plants and one of the core competitiveness of thermal power enterprises. At present, my country's thermal power plants have achieved digital and scientific fuel management to varying degrees, but there are still some gaps between the degree of digitalization and the actual requirements. It is still an urgent problem to be solved to continuously improve the digitization of the coal yard model, the real-time coal yard dynamics, and the closed-loop management of the coal yard. . For thermal power plants, coal-fired accounts for 60%-70% of the cost of power generation, how to control the cost of coal-fired is very important to save power costs of power plants. For some types of coal with high volatile content, since the...

Claims

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Application Information

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IPC IPC(8): F23K1/00F23K3/02F23N5/00
Inventor 华兴鲁张宇宁任子明李奇伟范志壮巩建勋
Owner 国电电力邯郸东郊热电有限责任公司
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