Diluting and sampling system for particle from fixed combustion source emission

A fixed combustion source and sampling system technology, applied in the field of sampling system for fixed combustion source particulate matter, sampling method to collect particulate matter sampling system, can solve the problems of measurement result deviation, system instability, etc., to reduce length, reduce sampling gas volume, The effect of easy operation

Inactive Publication Date: 2006-02-08
TSINGHUA UNIV
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Problems solved by technology

Chinese invention patent (publication number CN1614385) relates to an isokinetic tracking fixed source dilution sampling system, including a sampling head, a heating tube, a primary dilution chamber, a secondary dilution chamber, a residence chamber, a sampler, a data collector, and a pitot tube, etc. , the invention monitors the pressure parameters in the flue through the Pitot tube and adjusts the flow controller by the computer to realize the whole process of sampling at a constant speed. The pumps are all in a changing state, resulting in system instability and deviations in measurement results

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  • Diluting and sampling system for particle from fixed combustion source emission

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing, principle of the present invention, working process and specific implementation are further described:

[0015] The present invention mainly includes five parts such as a flue gas intake part, a primary dilution system, a secondary dilution system, a dwelling chamber and a sampling part.

[0016] The flue gas intake part is composed of a large particle cutter 1 and a sampling pipe 2, and a polytetrafluoroethylene hose 4 is connected behind the sampling pipe, and a heating insulation cover 3 is laid outside the sampling pipe and the hose. The role of the large particle cutter 1 is to cut off large particles (particle size greater than 10um), to avoid the deposition of large particles and block the pipeline. The inlet is equipped with a sampling nozzle, and the appropriate sampling nozzle is selected according to the flue gas flow rate to achieve constant velocity sampling. ; The heating insulation cover 3 makes the temperat...

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Abstract

The invention relates to a fixed burning source emission particulate sampling system, which comprises an off-gas inlet system, a second diluter, a setting house and a sampling system positioned on the lower part of the setting house. It arranges a compressed air system on the first diluter and a sampler outlet with gas flow gauge and a superfluity gas outlet with gas flow adjusting valve on the outlet end; it arranges a dilution air supplying system and a gas flow gauge on the outlet of the second diluter and a plurality of pressure balance holes around the lower part of the setting house.

Description

technical field [0001] The invention relates to a sampling system for particulate matter emitted by a fixed combustion source, in particular to a sampling system capable of collecting particulate matter by adopting a sampling method for atmospheric environment particulate matter after diluting and cooling high-temperature flue gas emitted by a fixed combustion source, and belongs to the technical field of environmental monitoring. Background technique [0002] Particulate matter emitted from stationary combustion sources is an important source of particulate matter in the atmospheric environment. How to reasonably collect particulate matter emitted from stationary combustion sources, understand the particle size distribution and physical and chemical characteristics of particulate matter emitted from stationary combustion sources, and analyze the source of air pollution, formulate pollution control measures and discharge Standard meaning is very important. [0003] At presen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14G01N1/38G01N1/28
Inventor 郝吉明李兴华段雷易红宏郭兴明
Owner TSINGHUA UNIV
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