Wet desulphurization slurry supply adjusting method

A wet desulfurization and slurry conditioning technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of fluctuating discharge of pollutants at the outlet, slow response of the slurry supply system, etc.

Pending Publication Date: 2021-03-30
XIAN THERMAL POWER RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This not only requires a lot of manpower, but also due to factors such as system response time, manual adjust...

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  • Wet desulphurization slurry supply adjusting method
  • Wet desulphurization slurry supply adjusting method
  • Wet desulphurization slurry supply adjusting method

Examples

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Embodiment 1

[0047] Taking a domestic power plant as an example, a 330MW unit in this plant is a subcritical boiler produced by Harbin Boiler Factory, and a set of wet limestone-gypsum flue gas desulfurization system is built to support the removal of two boilers by limestone-gypsum wet flue gas desulfurization process Sulfur dioxide in the tail flue gas, under the design conditions, the flue gas volume at the inlet of the desulfurization system is 1211221m 3 / h (standard state, dry basis, 6% O 2 ).

[0048] Firstly, according to the operation requirements, the operator sets the flue gas sulfur dioxide concentration C in the outlet flue of the wet desulfurization system SO2-设置 25mg / m 3 . The flue gas sulfur dioxide concentration C at the inlet flue of the wet desulfurization system is collected through the original DCS system data SO2-原 , flue gas sulfur dioxide concentration C in the outlet flue SO2-净 , The flue gas sulfur dioxide concentration C of the outlet flue before unit time ...

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Abstract

The invention discloses a wet desulphurization slurry supply adjusting method, which comprises the following steps: 1) setting the concentration CSO2-setting of flue gas sulfur dioxide of an outlet flue of a wet desulphurization system according to operation requirements; 2) respectively obtaining the flue gas sulfur dioxide concentration CSO2-original of the inlet flue of the wet desulphurizationsystem, the flue gas sulfur dioxide concentration CSO2-net of the outlet flue, the flue gas sulfur dioxide concentration CSO2-front of the outlet flue before unit time, and the slurry supply flow value Q supply-measurement of the slurry supply system, flue gas flow Q and the slurry supply density rho of the inlet flue of the wet desulphurization system, the slurry supply flow value Q supply-measurement, and the flue gas flow Q of the inlet flue of the wet desulphurization system and the slurry density rho from the original measurement system; 3) calculating a slurry supply flow value; and 4)comparing the calculated slurry supply flow value with the maximum output of the slurry supply system, and if the calculated slurry supply flow value exceeds the maximum output, reminding an operator;otherwise, automatically adjusting the slurry supply flow of the slurry supply system.

Description

technical field [0001] The invention belongs to the field of energy saving and environmental protection, and relates to a wet desulfurization regulating slurry supply method. Background technique [0002] Coal accounts for 90% of my country's primary energy reserves. my country's energy consumption is dominated by coal, and the total consumption of coal accounts for about 75% of my country's primary energy consumption. A large amount of coal combustion has caused my country to present a typical soot-type pollution. The main pollutants include SO 2 . In order to deal with environmental pollution and reduce pollutant emissions, most coal-fired industries in my country are equipped with desulfurization and environmental protection facilities. Among them, the wet desulfurization process is the most mature and widely used desulfurization technology. [0003] In the wet desulfurization process, it is necessary to continuously replenish new slurry to replace the old slurry that ...

Claims

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Application Information

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IPC IPC(8): B01D53/50B01D53/34B01D53/79
CPCB01D53/79B01D53/50B01D53/346
Inventor 宦宣州吴晓龙李楠何育东李兴华牛拥军雷鸣余福胜余昭王韶晖王定帮孟令海何仰朋郭浩然石振晶杨博
Owner XIAN THERMAL POWER RES INST CO LTD
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