Dilution sampling system and sampling method of fixed source particles and volatile organic compounds
A volatile organic compound, sampling system technology, applied in the direction of sampling devices, etc., can solve the problems of particle loss, measurement result deviation, unable to control the residence time, etc., to reduce the length, strengthen the mixing uniformity, and maintain the pressure balance effect.
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[0021] The structure diagram of the specific implementation of the fixed source particulate matter and volatile organic compound dilution sampling system provided by the present invention is as follows: figure 1 Shown.
[0022] The present invention is mainly composed of five parts: a flue gas introduction system, a dilution system, a retention chamber, a sample acquisition system, a control and data acquisition system.
[0023] The flue gas introduction system is composed of a constant velocity sampling smoke gun, a heating insulation pipe I4, a drainage chamber 5, a drainage chamber flow controller 6, and an air pump 7 in series. A sampling nozzle 1, a heating sampling tube 2 and a pitot tube 3 are arranged on the isokinetic sampling gun. The outlet of the sampling end of the drainage chamber 5 is connected with the inlet of the dilution system, and the other end of the drainage chamber 5 is connected in series with the flow controller 6 of the drainage chamber and the air pump 7...
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