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A monitoring system and method for exhaust gas flow rate and particle composition

A monitoring system and gas emission technology, applied in measuring devices, instruments, etc., can solve the problems of inconvenient installation and debugging of instruments, inability to realize comprehensive online monitoring of gas flow rate and particulate matter composition, etc., to avoid the inconvenience of installation and debugging.

Inactive Publication Date: 2021-08-06
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, from the point of view of measurement principle, the above methods are all based on active irradiation measurement methods, which cannot realize comprehensive online monitoring of gas flow rate and particle composition. It has a certain degree of coaxiality, which brings great inconvenience to the actual installation and debugging of the instrument

Method used

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  • A monitoring system and method for exhaust gas flow rate and particle composition
  • A monitoring system and method for exhaust gas flow rate and particle composition
  • A monitoring system and method for exhaust gas flow rate and particle composition

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Embodiment 1

[0044] Embodiment 1 of the present invention provides a monitoring system for exhaust gas flow rate and particle composition.

[0045] Such as figure 1 As shown, the monitoring system includes two gas flow rate signal collectors 1, a gas particle laser-induced breakdown spectrum signal collector 2, a spectrometer 3 and a signal analysis module 4; the two gas flow rate signal collectors 1 along the flue installed in the flue in parallel with the axial direction; each of the gas flow rate signal collectors 1 is installed along the diameter direction of the flue, and the two gas flow rate signal collectors 1 are connected to the signal analysis module 4, and the two The gas flow rate signal collector 1 is used to obtain the flow rate signals of the gas in the two channels of flue, and send the two channels of the flow rate signals to the signal analysis and processing module; The diameter of the flue is installed in the flue, and the gas particle laser-induced breakdown spectrum...

Embodiment 2

[0048] Embodiment 2 of the present invention is a preferred implementation of a monitoring system for exhaust gas flow rate and particle composition.

[0049] Such as figure 2 As shown, the gas flow rate signal collector 1 includes a detector 101, a detector driving module 102 ( figure 2 Not shown in), mirror frame 103, first signal collection combined lens 104, combined lens pressure ring 105, collimation cavity 106, dustproof mirror 107, dustproof mirror pressure ring 108 and flange 109; the dustproof The mirror 107 is fixed in the collimation cavity 106 through the dust-proof mirror pressure ring 108, and the infrared light emitted by the gas in the flue enters the collimation cavity 106 through the dust-proof mirror 107; the collimation cavity 106 One end of one end is screwed to the flange 109, the other end of the collimation cavity 106 is connected to one end of the mirror frame 103, and the first signal collection combination lens 104 passes through the first signal...

Embodiment 3

[0059] Embodiment 3 of the present invention provides a method for monitoring the flow rate of exhaust gas and the composition of particulate matter.

[0060] Such as Figure 4 As shown, the monitoring method is applied to the monitoring system, and the monitoring method includes the following steps:

[0061] Step 401, obtain two flow velocity signals; step 402, correlate the two flow velocity signals to obtain a correlated signal, and perform online monitoring on the flow velocity of the gas in the flue according to the correlated signal; step 403, obtain the particulate matter laser-induced shock Spectrum signal; step 404, on-line monitoring the composition of the particulate matter in the flue according to the laser-induced breakdown spectrum signal of the particulate matter.

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Abstract

The invention discloses a monitoring system and method for exhaust gas flow rate and particle composition. The monitoring system includes two gas flow rate signal collectors, a gas particle laser-induced breakdown spectrum signal collector, a spectrometer and a signal analysis module; the two gas flow rate signal collectors are installed in the flue in parallel along the axial direction of the flue ; Each of the gas flow rate signal collectors is installed along the diameter direction of the flue, and the two gas flow rate signal collectors are connected to the signal analysis module, and the gas particle laser-induced breakdown spectrum signal collector is along the flue The diameter is installed in the flue, the gas particle laser-induced breakdown spectrum signal collector is connected to the spectrometer through an armored optical fiber, and the spectrometer is connected to the signal analysis module through a data line. The invention realizes the comprehensive on-line monitoring of gas flow rate and particle composition.

Description

technical field [0001] The invention relates to the field of environmental monitoring, in particular to a monitoring system and method for exhaust gas flow rate and particle composition. Background technique [0002] With the rapid development of social economy, the waste gas, waste water and particulate matter released by industrial production have caused serious pollution to the natural environment, posing severe challenges to environmental protection and attracting worldwide attention. The problem of particulate matter pollution is another important factor leading to the deterioration of the modern living environment. Particulate matter pollution is the air pollution caused by small solid particles in the air caused by industrial production. Particulate matter pollution often poses a serious threat to people's life and health. Among the particulate matter Some small particles (PM2.5) in the air can also enter the blood through the bronchi and alveoli, and the harmful heav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02
Inventor 董凤忠刘建苹倪志波张志荣付洪波王华东贾军伟
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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