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Online monitoring device of denitration CEMS (Continuous Emission Monitoring System) system

A technology of monitoring device and mixed gas chamber, which is applied in the field of data monitoring of denitrification system, can solve the problem of uneven single-point measurement of NO concentration, and achieve the effect of reducing economic cost and good packaging performance

Inactive Publication Date: 2018-06-22
安徽蓝盾光电子股份有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to solve the deficiencies of the prior art, provide an out-of-stock CEMS system online monitoring device, solve the problem of uneven single-point measurement of NO concentration under denitrification conditions, mix the sample gas evenly through multi-point sampling, and then measure the reaction Representative NO measurement value in the denitrification flue, effectively improving the accuracy of online monitoring

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  • Online monitoring device of denitration CEMS (Continuous Emission Monitoring System) system
  • Online monitoring device of denitration CEMS (Continuous Emission Monitoring System) system
  • Online monitoring device of denitration CEMS (Continuous Emission Monitoring System) system

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Embodiment Construction

[0019] Combine below Figure 1 to Figure 6 , to further illustrate the present invention.

[0020] As shown in the figure, an out-of-stock CEMS system online monitoring device includes a sampling unit and an analysis unit;

[0021] Sampling unit-comprising multi-point sampling mechanism and blowback mechanism; multi-point sampling mechanism includes several sampling passages, and the sampling passages are collected in the mixed gas chamber 6, and the mixed gas chamber 6 is connected to the analysis unit; the mixed gas chamber Including a filter bottle 8, one end of the filter bottle 8 is threadedly connected to the air inlet 12, and the other end is threadedly connected to the filter head 7 of the mixed gas chamber, the filter bottle 8 is provided with a mixed gas chamber pillar 10, and the mixed gas chamber One end of the pillar 10 is threadedly connected to the filter head 7 of the mixed gas chamber, and the other end is connected to the ceramic filter 9; the air inlet 12 i...

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Abstract

The invention discloses an online monitoring device of a denitration CEMS (Continuous Emission Monitoring System) system. The online monitoring device comprises a sampling unit and an analysis unit, wherein the sampling unit comprises a multi-point sampling mechanism and a back blowing mechanism; the analysis unit comprises a host machine cabinet and a secondary machine cabinet. Sine samples are taken from multiple points, sample gases are uniformly mixed, and measurement of gas concentrations is achieved through an ultraviolet differential absorption spectrums, an actual NO concentration value of a denitration working condition can be precisely reflected, out-of-standard emission caused by great NO concentration variations is avoided, and the economic cost can be reduced for users. The online monitoring device is good in packaging property, small in number of external equipment and exposed devices, and effectively applicable to various complex environments.

Description

technical field [0001] The invention relates to the field of data monitoring of a denitrification system, in particular to an online monitoring device for an out-of-stock CEMS system. Background technique [0002] In order to prevent excessive NOx pollution of the environment after coal combustion in the boiler, the coal should be denitrified. The denitrification treatment methods are divided into denitrification before combustion, denitrification during combustion, and denitrification after combustion. The CEMS system is mainly used to monitor NO X Concentration monitoring, divided by function, generally consists of a monitoring system consisting of sampling and preprocessing units, data acquisition and processing subsystems. The system adopts ultraviolet differential spectrum gas analyzer as NO analysis instrument, adopts advanced diode array detection, full spectrum analysis, optical fiber transmission and other technologies, and can realize real-time measurement of NO ...

Claims

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Application Information

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IPC IPC(8): G01N21/33G01N1/26G01N1/22G01N1/38G01N1/40
CPCG01N1/2258G01N1/26G01N1/38G01N1/4077G01N21/33G01N2001/2261G01N2001/2282G01N2001/386G01N2001/4088
Inventor 张强杨波韩正松吕长彬
Owner 安徽蓝盾光电子股份有限公司
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