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Cold dry method online analysis sample gas treatment system

A sample gas processing system and sample gas technology, applied in the field of flue gas online monitoring, can solve problems such as interference, reduce transmission resistance, ensure filtering effect, and achieve the effect of true measurement data

Pending Publication Date: 2020-08-14
重庆飞扬测控技术研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, under the background of ultra-low emission, the existing flue gas analyzer is especially seriously disturbed by water vapor. For example, when the analyzer uses non-dispersive infrared absorption method, SO 2 , NO X There is overlap with the absorption peak of water vapor, especially in the case of low concentration, the influence of water vapor on the measurement will be more prominent

Method used

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  • Cold dry method online analysis sample gas treatment system
  • Cold dry method online analysis sample gas treatment system
  • Cold dry method online analysis sample gas treatment system

Examples

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Effect test

Embodiment 1

[0027] figure 1 It is a schematic structural diagram of the cold-drying method sample gas treatment system provided in Example 1 of the present invention. Such as figure 1 As shown, the cold-dry online analysis sample gas processing system provided by the present invention includes a sampling unit 1 connected through a sample gas pipeline 4, a sample gas processing unit and a sample gas control unit 3, and the sample gas control unit 3 is configured to monitor And control the sample gas flow rate and sample gas temperature of the sample gas processing system; the sample gas processing unit includes a dust removal device 2 and a dehumidification device 3, and a phosphoric acid introduction unit 5 is arranged upstream of the dehumidification device 2 according to the flow direction of the sample gas The phosphoric acid introduction unit 5 includes a first container 51 containing phosphoric acid and a vaporization device 53 connected to the first container 51 through a first mic...

Embodiment 2

[0038] figure 2 It is a schematic structural diagram of the cold-drying method sample gas treatment system provided in Example 2 of the present invention. The sample gas processing system in embodiment 2 is similar in structure to the sample gas processing system in embodiment 1. The difference is that, in this embodiment, the phosphoric acid introducing unit 5 includes a first container 51 containing standard phosphoric acid and a vaporization device 53 connected to the first container 51 through a first micropump 52. In addition, the phosphoric acid introducing unit 5 also includes a container containing A second container 54 of water and a second micropump 55 , the second container 54 is connected to the vaporizer 53 through the second micropump 55 . The phosphoric acid introduction unit 5 of this embodiment can realize 2 When the concentration of the gas is equal, phosphoric acid of different concentrations is added dropwise to the sample gas treatment system. For exam...

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Abstract

The invention provides a cold dry method online analysis sample gas treatment system. The system comprises a sampling unit, a sample gas treatment unit and a sample gas control unit which are connected through a sample gas pipeline; the sample gas treatment unit comprises a dust removal device, a dehumidification device and a phosphoric acid introduction unit arranged at the upstream of the dehumidification device; the phosphoric acid introduction unit comprises a first container for containing phosphoric acid and a vaporization device connected with the first container through a first micro pump; and the vaporization device is communicated with the sample gas pipeline. According to the invention, the phosphoric acid introduction unit is arranged before sample gas dehumidification, and phosphoric acid is dropped into the sample gas pipeline, so that the sample gas is in an acidic environment, the loss of SO2 and other water-soluble gases is effectively inhibited, and the measurement data of a rear-end gas analyzer is more real and accurate.

Description

technical field [0001] The invention relates to the technical field of flue gas on-line monitoring, in particular to a cold-dry online analysis sample gas processing system. Background technique [0002] Continuous Emission Monitoring System refers to a device that continuously monitors the concentration and total emission of gaseous pollutants and particulate matter emitted by air pollution sources and transmits the information to the regulatory department in real time. The on-line monitoring and analysis system requires long-term continuous and stable detection and analysis. Continuous sampling and strict sample gas processing technology are required. The sample gas reaching the back-end analyzer is required to be transmitted quickly and without distortion. The sample gas entering the analyzer can reach a level close to the standard gas The general high quality ensures that the analyzer can obtain a representative sample gas in the shortest lag time, and the state of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/42G01N1/40G01N1/22
CPCG01N1/2205G01N1/4022G01N1/42G01N2001/4033
Inventor 张所容姚洪涛潘虹钢易俊
Owner 重庆飞扬测控技术研究院有限公司
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