Flue gas powder dust and characteristic gas simultaneous on-line monitoring method and apparatus

A monitoring device and flue gas technology, which is applied in the field of characteristic gas monitoring and flue gas dust, can solve the problems of inconvenient comprehensive evaluation of flue gas, difficult data integration, and cumbersome measurement repetition, etc. It achieves compact structure, less space occupation, and reduced connection The effect of craft

Inactive Publication Date: 2008-11-12
NORTHEAST DIANLI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, what is disclosed in the literature is a single smoke measurement or a single characteristic gas online monitoring, etc. There is no online monitoring device that integrates smoke measurement and characteristic gas monitoring. Comprehensive evaluation of smoke is inconvenient

Method used

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  • Flue gas powder dust and characteristic gas simultaneous on-line monitoring method and apparatus
  • Flue gas powder dust and characteristic gas simultaneous on-line monitoring method and apparatus
  • Flue gas powder dust and characteristic gas simultaneous on-line monitoring method and apparatus

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Embodiment 1

[0047] Embodiment 1: (simultaneous online monitoring device for flue gas dust and characteristic gas of the present invention)

[0048] As can be seen from accompanying drawing 1, a kind of flue gas dust of the present invention and characteristic gas on-line monitoring device simultaneously, it is connected with chimney 12 and it is provided with boiler flue 11 side walls of induced draft fan 10, is provided with through flange 9 phase Connect the fixed U-shaped flue gas bypass pipe 3. The U-shaped flue gas bypass pipe 3 is fixed on the housing 1 of the device; on one side of the U-shaped flue gas bypass pipe 3, a transmitting and receiving device 4 for measuring the flue gas, and a reflector on the other side of the U-shaped flue gas bypass pipe are installed. Device 5; two groups of three multifunctional probes 6 for measuring the characteristic gas are symmetrically installed on the outside of the inlet and outlet pipes of the U-shaped flue gas bypass pipe 3; in the monito...

Embodiment 2

[0051] Embodiment 2: (application of the online monitoring method for flue gas dust and characteristic gas at the same time of the present invention)

[0052] It can be seen from Figure 1 that the simultaneous online monitoring method of flue gas dust and characteristic gas is composed of the following processes and steps in sequence:

[0053] 1) Connect and fix the U-shaped flue gas bypass pipe 3 of the flue gas dust and characteristic gas online monitoring device on the side wall of the boiler flue 11, and start the fan 2 to ensure that there is enough air in the U-shaped flue gas bypass pipe 3. flue gas flow;

[0054] 2) Measurement of flue gas dust: the flue gas flows through the U-shaped flue gas bypass pipe 3, and the laser emitted by the transmitter of the transmitting and receiving device 4 installed on the side of the U-shaped flue gas bypass pipe 3 intake pipe, The passing flue gas is reflected by the baffle plate of the reflecting device 5 symmetrically installed o...

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Abstract

The present invention provides an online monitoring method and a device for monitoring dust and characteristic gas in flue gas, wherein, the device mainly comprises a casing, a blower, a U-shaped flue gas by-pass pipe, an emitting / receiving unit, a reflection unit, a probe, a data collector, and a data analysis system. After the blower is started, the laser beam emitted from the emitting / receiving unit penetrates through the flue gas and is reflected by the reflecting unit, the reflected beam is received by the receiving unit, and transmitted through a lead wire to the data acquisition controller, the multi-functional probe measures characteristic gas, and transmits the data through a lead wire to the data acquisition controller, the collected data of dust and characteristic gas in the flue gas is transmitted through a lead wire to the flue gas analysis system, the concentration values of NOx, NO, SO2, CO and CO2 are measured with an alternating flow non-dispersed infrared technique, and the concentration values of O2 and H2 are measured with a magnetic pressure technique; the instantaneous concentration values and dynamic mean values between any two time points within 14h of the seven characteristic gas are outputted.

Description

technical field [0001] The invention relates to a method and device for monitoring flue gas dust and characteristic gas, in particular to a simultaneous online monitoring method and device for flue gas dust and characteristic gas. Background technique [0002] At present, what is disclosed in the literature is a single smoke measurement or a single characteristic gas online monitoring, etc. There is no online monitoring device that integrates smoke measurement and characteristic gas monitoring. The comprehensive evaluation of smoke is inconvenient. This patent discloses such a simultaneous measurement method of flue gas dust and characteristic gas and an online detection device. Its structural features are: compact structure, less space occupation, simple installation and disassembly, and convenient measurement. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a simultaneous online monito...

Claims

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Application Information

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IPC IPC(8): G01N21/61G01N27/00G01N15/00G01N21/41
Inventor 李少华王虎郭婷婷车德勇张立栋居玉雷李振华
Owner NORTHEAST DIANLI UNIVERSITY
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