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Device and method for simultaneous sampling and time-sharing wheel measurement of NOx of SCR denitration system

A denitrification and sampling tube technology, which is applied to the structural details of measuring devices, sampling devices, gas analyzers, etc., can solve the problems of high-efficiency, stable and economical operation of ultra-low emission, uneven distribution of flue concentration field, and inability to effectively reflect Gas composition distribution and other issues to achieve the effect of reducing impact, reducing costs, and improving accuracy

Pending Publication Date: 2020-12-29
HUADIAN ELECTRIC POWER SCI INST CO LTD
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Problems solved by technology

[0003] Currently NO, NO 2 , N 2 O and O 2 Most of the detection and analysis of such indicators adopt the method of sampling and analyzing in the flue, while the existing flue sampling usually adopts the single-point sampling method. The single-point sampling method cannot effectively reflect the distribution of gas components on the entire flue section, which is not conducive to the efficient, stable and economical operation of ultra-low emissions

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  • Device and method for simultaneous sampling and time-sharing wheel measurement of NOx of SCR denitration system
  • Device and method for simultaneous sampling and time-sharing wheel measurement of NOx of SCR denitration system
  • Device and method for simultaneous sampling and time-sharing wheel measurement of NOx of SCR denitration system

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0025] Such as figure 1 , a device for simultaneous sampling and time-sharing testing of NOx in an SCR denitrification system, comprising a simultaneous sampling system 1, a sample gas storage system 2, a time-sharing testing system 3 and a flue gas analyzer 4, a simultaneous sampling system 1, a sample gas storage system 2. The time-sharing wheel measurement system 3 and the flue gas analyzer 4 are connected in sequence, and the sampling system 1 simultaneously collects flue gas samples at multiple measuring points at the cross section of the flue through the sampling pipe 5, and then enters the sample gas storage system 2 for storage. Finally, enter the flue gas analyzer 4 for measurement and analysis through the ...

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Abstract

The invention discloses a device and method for simultaneous sampling and time-sharing wheel measurement of NOx of an SCR denitration system. The device comprises a simultaneous sampling system, a sample gas storage system, a time-sharing wheel measurement system and a flue gas analyzer, wherein the simultaneous sampling system, the sample gas storage system, the time-sharing wheel measurement system and the flue gas analyzer are connected in sequence, the simultaneous sampling system simultaneously collects flue gas samples at multiple measuring points by a sampling pipe at the section of a flue, then the flue gas samples enter the sample gas storage system to be stored, and finally the flue gas samples enter the flue gas analyzer through the time-sharing wheel measurement system to be measured and analyzed, so that simultaneous sampling and time-sharing wheel measurement of NOx in the same section of the denitration system are realized. According to the device, the NOx concentrationfield distribution condition of the same section can be monitored on line in real time, the sampled flue gas is flue gas at the same moment, and it is guaranteed that the measurement result effectively reflects the real distribution condition of the NOx concentration, so that accurate data support is provided for precise ammonia spraying control of each subarea.

Description

technical field [0001] The invention relates to a device and a method for simultaneous sampling and time-sharing testing of NOx in an SCR denitrification system. Background technique [0002] With the implementation of denitrification ultra-low emissions, the uniform distribution of NOx at the inlet and outlet of the SCR denitrification system directly affects the performance of the SCR denitrification system, and how to accurately grasp the NO and NOx in the flue gas at the inlet and outlet 2 , N 2 O and O 2 And other indicators, which truly reflect the distribution of NOx in the flue cross section, have become a major restrictive factor for the stable operation of the ultra-low emission of the denitrification system. [0003] Currently NO, NO 2 , N 2 O and O 2 Most of the detection and analysis of such indicators adopt the method of sampling and analyzing in the flue, while the existing flue sampling usually adopts the single-point sampling method. The single-point s...

Claims

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Application Information

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IPC IPC(8): G01N1/24G01N33/00
CPCG01N1/2205G01N1/2258G01N1/24G01N33/0009G01N33/0037
Inventor 杜振冯前伟柴磊朱跃
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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