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Method for controlling flue gas of coal-fired boiler

A technology for coal-fired boilers and control methods, which is applied in separation methods, chemical instruments and methods, and multiple fluid ratio control, etc., can solve problems such as desulfurization system equipment and slurry pollution.

Inactive Publication Date: 2016-01-20
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0003] Based on this, it is necessary to provide a coal-fired boiler flue gas control method in view of the technical problem that the above-mentioned devices cause pollution to the desulfurization system equipment and slurry

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  • Method for controlling flue gas of coal-fired boiler

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Embodiment Construction

[0012] The specific implementation of the method for controlling flue gas of a coal-fired boiler provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0013] refer to figure 1 , figure 1 Shown is a flow chart of a coal-fired boiler flue gas control method of an embodiment, including the following steps:

[0014] S10, detecting whether the working water pressure of the flue accident sprinkler at the entrance of the absorption tower in the coal-fired boiler is within the preset water pressure range;

[0015] In the above step S10, in the coal-fired boiler desulfurization system with a bypass, the desulfurization bypass is always turned on when the boiler is ignited to separate the desulfurization system. After the boiler starts up and enters the normal combustion state, after the electrostatic precipitator is put into operation, the bypass baffle is closed, and the desulfurization inlet bypass baffle is opened to p...

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Abstract

The invention relates to a method for controlling flue gas of a coal-fired boiler. The method comprises the steps of detecting whether the water pressure of a flue accident spray thrower at the inlet of the absorption tower of a coal-fired boiler is within a preset water pressure range or not; acquiring the stirring frequency of the stirrer of the absorption tower on the condition that the water pressure of the flue accident spray thrower is within the preset range; acquiring the concentration of the flue gas at the inlet of the absorption tower after the slurry feeding adjustment system of the absorption tower is put to use, on the condition that the stirring frequency is within a preset frequency range; adjusting the running parameters of the electrostatic precipitator of the coal-fired boiler according to the concentration of the flue gas; running the electrostatic precipitator at the above running parameters of the electrostatic precipitator, switching on the coal-fired boiler and discharging the flue gas. In this way, the normal operation of the above coal-fired boiler can be ensured. Meanwhile, the sulfur content of the discharged flue gas is lowered. Moreover, the influence of the associated coal-fired operation on the environment is lowered.

Description

technical field [0001] The invention relates to a coal-fired boiler control technology, in particular to a coal-fired boiler flue gas control method. Background technique [0002] After removing the bypass of the desulfurization system, the coal-fired boiler can realize the advantages of simplifying the related equipment and reducing the coal-burning process; , carbon particles and high-concentration dust flue gas will enter the desulfurization system of the coal-fired boiler, causing pollution to the desulfurization system equipment and slurry. Contents of the invention [0003] Based on this, it is necessary to provide a coal-fired boiler flue gas control method for the technical problem that the above-mentioned device causes pollution to the desulfurization system equipment and slurry. [0004] A method for controlling flue gas of a coal-fired boiler, comprising the steps of: [0005] Detect whether the water pressure of the flue accident sprinkler at the entrance of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D11/13B01D53/80B01D53/48B01D53/18
Inventor 李德波李方勇陈磊许凯钟俊尹凯奇陈拓周杰联徐齐胜
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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