Sampling method of condensable particulate matter sampling device
A sampling device and particulate matter technology, which can be applied in sampling devices, absorption and weighing of substances, etc., can solve problems such as negative effects and cannot represent fixed sources, and achieve the effects of fast cooling, reduced residual loss, and reduced burden.
Active Publication Date: 2017-10-13
深圳睿境环保科技有限公司
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Problems solved by technology
Foreign studies have pointed out that for coal-fired boilers, in terms of mass, condensable particulate matter emissions account for the total PM 10 76% of PM emissions and 49% of total PM emissions, which means: first, my country’s current test results for stationary source particulate matter (that is, filter particulate matter) cannot represent the real emissions of stationary sources; second, condensable particulate matter belongs to fine particulate matter and in total PM 10 The share of emissions is very large, and the degree of enrichment gradually increases with the reduction of particle size. If it is not considered, it will definitely have a negative impact on the formulation of policies for the control of inhalable particulate matter in ambient air.
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[0022] Such as Figure 1-3 The condensable particulate matter sampling device shown includes a sampling head 1, a filter 2, a heater 3, a sampling pipe 4, a heating cable 5, a three-way ball valve 6, a blowback pipe 7, an air inlet pipe 8, a condenser 9, and a refrigerator 10 , filter clip 11, filter membrane 12, exhaust pipe 13, flow meter 14, vacuum pump 15.
[0023] Sampling head 1, filter 2, sampling pipe 4, three-way ball valve 6, inlet pipe 8, condenser 9, filter membrane clamp 11, exhaust pipe 13, flow meter 14, and vacuum pump 15 are connected in sequence. The sampling head 1 and the filter 2 are located in the flue 17 . Sampling head 1 is an upwardly bent stainless steel tube for reverse sampling. The filter 2 is a ceramic filter or a sintered metal filter, which is used to filter filterable particles in the flue gas. The filter 2 is provided with a heater 3 for heating the flue gas and preventing the flue gas from condensing in the filter 2 . The sampling pipe 4 ...
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The invention provides a condensable particle sampling device, which includes a sampling head, a filter, a heater, a sampling pipe, a heating cable, a three-way ball valve, a blowback pipe, an air intake pipe, a condenser, a refrigerator, a filter membrane clip, a filter membrane, Exhaust pipe, flow meter, vacuum pump. The sampling head, filter, sampling pipe, three-way ball valve, intake pipe, condenser, filter membrane clamp, exhaust pipe, flow meter, and vacuum pump are connected in sequence; the sampling head and filter are located in the flue, and the A heater is provided; the sampling pipe is fixed on the flue through a flange, one end of the sampling pipe is located inside the flue, the other end is located outside the flue, and a heating cable is provided on the sampling pipe; the two ends of the three-way ball valve are respectively connected to the sampling pipe. pipe and air inlet pipe, the other end is connected to the blowback pipe; the condenser is provided with a refrigerator; the filter membrane clamp is located outside the outlet of the condenser, and the filter membrane is located in the filter membrane clamp.
Description
technical field [0001] The invention belongs to the technical field of environmental protection monitoring and relates to a sampling device, in particular to a sampling device for condensable particulate matter. Background technique [0002] Particulate matter emitted from stationary sources is one of the earliest recognized pollutants. The definition of particulate matter in my country's stationary source particulate matter test standard GB16157-1996 (measurement of particulate matter in exhaust from stationary pollution sources and sampling methods for gaseous pollutants) and HJ / T397-2007 (technical specifications for monitoring exhaust gas from stationary sources) is: "fuel and other substances Solid and liquid particulate matter suspended in the exhaust gas produced during combustion, synthesis, decomposition and mechanical processing of various materials". This type of particulate matter is called Filterable Particulate Matter (Filterable Particulate Matter), which can ...
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IPC IPC(8): G01N1/24G01N5/02
Inventor吴迅海曾勇
Owner深圳睿境环保科技有限公司