Condensable particle sampling device

Abstract

The invention provides a condensable particle sampling device. The condensable particle sampling device comprises a sampling head, a filter, a heater, a sampling pipe, a heating band, a three-way ball valve, a reverse blowing pipe, a gas-in pipe, a condenser, a refrigerator, a filter membrane clamp, a filter membrane, an exhaust pipe, a flowmeter and a vacuum pump, wherein the sampling head, the filter, the sampling pipe, the three-way ball valve, the gas-in pipe, the condenser, the filter membrane clamp, the exhaust pipe, the flowmeter and the vacuum pump are sequentially connected; the sampling head and the filter are positioned in a flue, and the heater is arranged on the filter; the sampling pipe is fixed on the flue by a flange, one end of the sampling pipe is positioned in the flue, the other end of the sampling pipe is positioned outside the flue, and the heating band is arranged on the sampling pipe; the two ends of the three-way ball valve are respectively connected with the sampling pipe and the gas-in pipe, and the other end of the three-way ball valve is connected with the reverse blowing pipe; the refrigerator is arranged on the condenser; the filter membrane clamp is positioned outside an outlet of the condenser, and the filter membrane is positioned 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 ...

AI Technical Summary

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.

Images