A pollution source condensable particulate matter sampling device and sampling method

A sampling device and particle technology, applied in the field of testing, can solve the problems of different graded particles, affecting the portability of the sampling system, measurement errors, etc., and achieve the effect of reducing measurement errors

Active Publication Date: 2020-09-22
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

The sum of the two is the concentration of condensable particulate matter. The disadvantage of the method is that water vapor is also condensed out during the process of flue gas condensation and cooling, and some SO soluble in water in the flue gas 2 gases, soluble in condensed water, thus giving a positive bias to accurate measurements of condensable particulate matter
There are two cyclones in the unit to remove specific particulate matter from the flue gas, which will cause measurement errors
On the one hand, the cutting points of the two cyclone cutters cannot be exactly the same, resulting in different classified particles
The flue gas flow rate of the two channels cannot be exactly the same, which will also cause the cutting point of the cyclone cutter to be different, resulting in measurement errors; on the other hand, the two cyclone classifiers need to be heated and kept warm, and at the same time increase the complexity of the sampling system, thus affecting the sampling System Portability

Method used

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  • A pollution source condensable particulate matter sampling device and sampling method
  • A pollution source condensable particulate matter sampling device and sampling method

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1 The illustrated embodiment of the present invention includes: a particle classification device 1, a flue gas pipeline 2, a heating and heat preservation device 3, a filterable particle collection device 4, a filterable particle flow meter 5, a filterable particle suction device 6, and a dilution air Flow meter 7, dilution air particle filter device 8, dilution air organic matter and water vapor removal device 9, dilution air supply device 10, bypass air particle filter device 11, bypass air flow meter 12, bypass air suction device 13, The total particle collection device 14, the total particle flowmeter 15, the total particle suction device 16, the dilution chamber 17 and the gas distribution plate 18; wherein, the particle classification device 1 communicates with the air distribution in the dilution chamber 17 through the flue gas pipe...

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Abstract

The invention discloses a pollution source coagulable particulate matter sampling device and method in the field of pollution source monitoring. A particulate matter classification device is placed ina fixed pollution source flue and is connected with each of an air distribution plate in a dilution cavity and a filterable particulate matter collection device through flue gas pipelines; a diluentair supply device, a diluent air organic matter and water vapor removal device, a diluent air particulate matter filtering device, a diluent air flow meter and a diluent air inlet of the dilution cavity are connected in sequence through a pipeline; a fist mixed gas outlet of the dilution cavity, a bypass gas particulate matter filtering device, a bypass gas flow meter and a bypass gas extraction device are connected in sequence through a pipeline; and a second mixed gas outlet of the dilution cavity, a total particulate matter collection device, a total particulate matter flow meter and a total particulate matter air extractor are connected in sequence through a pipeline. According to a measurement method provided by the invention, the particulate matter and total particulate matters can be collected at the same time, and then a difference value is calculated to obtain the coagulable particulate matters.

Description

technical field [0001] The invention belongs to the technical field of testing, and specifically relates to a sampling device and a sampling method for condensable particulate matter of pollution sources. Background technique [0002] The particulate matter emitted by stationary pollution sources not only includes filterable particulate matter that exists in the flue as liquid or solid particles, but also includes condensable particulate matter that is gaseous at the temperature of the flue and condenses into solid or liquid particles within a short time after being discharged from the flue into the atmosphere. particulates. [0003] At present, the sampling device and method of condensable particulate matter from fixed pollution sources that are more widely used are the standard method of the U.S. Environmental Protection Agency (device 202 of the U.S. Environmental Protection Agency method), in the United States Environmental Protection Agency (U.S.EPA). Method 202-Dry imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/24G01N1/34G01N5/02
CPCG01N1/2273G01N1/24G01N1/34G01N5/02
Inventor 蒋靖坤邓建国王刚张莹李妍菁
Owner TSINGHUA UNIV
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