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Accurate measurement method of SO2 emissions after desulfurization tower of thermal power plant

A thermal power plant, accurate measurement technology, applied in the direction of measurement devices, instruments, scientific instruments, etc., to avoid the deviation of flue gas composition measurement, avoid SO2 condensation, easy to operate

Inactive Publication Date: 2018-09-18
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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Problems solved by technology

[0004] The object of the present invention is to provide a kind of SO 2 Accurate measurement method of emissions, used to solve the problem of SO flowing through the desulfurization tower of a thermal power plant 2 Technical Issues in Accurate Measurement of Emissions

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  • Accurate measurement method of SO2 emissions after desulfurization tower of thermal power plant
  • Accurate measurement method of SO2 emissions after desulfurization tower of thermal power plant
  • Accurate measurement method of SO2 emissions after desulfurization tower of thermal power plant

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[0020] In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and techniques are omitted herein to avoid unnecessarily limiting the present invention.

[0021] Such as figure 1 As shown, the SO in a thermal power plant desulfurization tower 2 Method for precise measurement of emissions; includes the following steps:

[0022] (1) At a certain position behind the desulfurization tower, select the section 4 of the rectangular flue wall as the measurement plane, and divide the section of the flue into m×n measuring points;

[0023] (2) Put the flue gas sampling device 1 into any measuring point, the flue gas enters the fly ash filter device 2 under the action of the air pump 7...

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Abstract

The invention provides an accurate measurement method of SO2 emissions after a desulfurization tower of a thermal power plant. The accurate measurement method of the SO2 emissions after the desulfurization tower of the thermal power plant is used for solving a technical problem of accurately measuring the SO2 emissions after flowing through the desulfurization tower of the thermal power plant. Theaccurate measurement method of the SO2 emissions after the desulfurization tower of the thermal power plant comprises the following steps: selecting a rectangular flue section as a measurement planeat a position after the desulfurization tower, and dividing the flue section into m*n measuring points; measuring SO2 concentration at each point; correcting the flow rate of flue gas, and conductingarithmetic average calculation on an actual value of SO2 at each sampling time in a sampling period, that is, obtaining an actual escape ammonia value SO2 in the measurement period. The accurate measurement method of the SO2 emissions after the desulfurization tower of the thermal power plant has the beneficial effects that the measurement method is simple and the measurement result is more accurate.

Description

technical field [0001] The present invention relates to SO 2 Measurement method technical field, specifically a kind of SO 2 Accurate measurement methods for emissions. Background technique [0002] As the country pays more and more attention to power plant emissions, more and more thermal power plants have carried out desulfurization tower transformation. The desulfurization efficiency of the desulfurization tower is an important indicator for the transformation evaluation. 2 The emission concentration itself is very low, and the flue gas contains a lot of water, which is easy to condense and absorb SO at low temperature 2 , and currently with the increase of unit capacity, the cross-sectional area of ​​the flue increases accordingly, the phenomenon of stratification of the flue gas is very obvious, the non-uniformity of the flue gas flow rate is large, and the flow rate deviation of different measuring points is large, so the accurate measurement of the outlet of the des...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
CPCG01N33/0004G01N33/0011G01N33/0042
Inventor 崔福兴王家新张绪辉王守恩王海超刘科董信光段传俊
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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