Large-flow sampling device for industrial flue gas particulate matters

Abstract

The invention discloses a large-flow sampling device for industrial flue gas particulate matters. The large-flow sampling device comprises a sampling gun, a filter device, a flow rate metering device, a diluting and cooling device, a water cooling device and a vortex gas pump which are connected through a pipeline in sequence, wherein the filter device comprises an upper taper cylinder and a lower cylinder which are symmetrically arranged up and down, the diameter of the upper tape cylinder is gradually increased from top to bottom, a supporting ring is clamped between the upper taper cylinder and the lower taper cylinder, a groove is formed in the bottom of the supporting ring, a filter film and a supporting plate of the filter film are arranged in the groove of the supporting ring from top to bottom in sequence, the filter film and the supporting plate are clamped and pressed between the upper taper cylinder and the supporting ring; the upper end of the upper taper cylinder is connected to the sampling gun through a hose I; the lower end of the lower taper cylinder is connected to the flow rate metering device through a hose II; the aperture ratio of the supporting plate is greater than 50%; an accumulative integrating instrument is attached to the flow rate metering device. The large-flow sampling device can be used for quickly realizing large-flow sampling of particulate matters of low-concentration emission source flue gas.

Description

technical field [0001] The invention relates to the technical field of large-flow sampling for the detection of particulate matter emission concentration and emission source analysis of industrial flue gas emission, especially the low emission concentration (<10mg / standard m 3 ) is a large-flow sampling device for testing the emission concentration of particulate matter in flue gas and analyzing the emission source. Background technique [0002] With the advancement of dust collection technology, the concentration of particulate matter emissions from fixed source discharge points is getting lower and lower (<10mg / standard m 3 ), due to the limited flow rate (≤80L / min) of the traditional dust tester, when the emission concentration is 10mg / standard m 3 , the time required to collect 1g of sample ≥ 20.8 hours, when the emission concentration is 1mg / standard m 3 When the required time is ≥ 208 hours, this will greatly increase the labor intensity and cycle of environmen...

AI Technical Summary

Problems solved by technology

[0002] With the advancement of dust collection technology, the concentration of particulate matter emissions from fixed source discharge points is getting lower and lower (3 ), due to the limited flow rate (≤80L / min) of the traditional dust tester, when the emission concentration is 10mg / standard m 3 , the time required to collect 1g of sample ≥ 20.8 hours, when the emission concentration is 1mg / standard m 3 When the required time is ≥ 208 hours, this will greatly increase the labor intensity and cycle of environmental monitoring

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