Device for simultaneously capturing dust content of fixed pollution source and water-soluble ions and capture method thereof

Abstract

The invention provides a device for simultaneously capturing a dust content of a fixed pollution source and water-soluble ions and a capture method thereof, which belong to the field of environment monitoring equipment. The device comprises a sampling head, a filter cylinder, a sampling tube, a condensation impact bottle set, a filter clamp, and a sampling pump; the sampling head extends in a fluefor sampling; the sampling head is connected with the filter cylinder; and the filter cylinder is connected with the condensation impact bottle set, the filter cylinder, and the sampling pump in series. The invention provides the device and the method for simultaneously capturing the dust content of the fixed pollution source and the water-soluble ions, an ice tank and the impact bottles are employed to obtain the solid, liquid and gaseous granular water-soluble ions by using the double condensation modes of temperature control condensation and impact, a filter membrane clamp with a Teflon filter is also installed at the end of the device to capture the particles formed by condensation, so that the particles are completely captured.

Description

technical field [0001] The invention provides a device and a measuring method for simultaneously capturing the dust content and water-soluble ions of a fixed pollution source, belonging to the field of environmental monitoring equipment. Background technique [0002] From the perspective of the complete spectrum of particulate matter emitted from stationary sources, the particulate matter emitted by coal-fired power plants should include oxides, heavy metals, organic matter, and water-soluble ions. At home and abroad, there are many studies on oxides, heavy metals and organic matter of particulate matter in coal-fired power plants, but less attention has been paid to water-soluble ions in particulate matter. [0003] Particulate matter water-soluble ions refer to the soluble salts formed in the flue gas under ultra-low emissions that condense, collide and form particulate matter or adsorb on particulate matter. Before ultra-low emissions, the characteristic particulate ma...

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Problems solved by technology

It is not difficult to see that the particle size becomes smaller under ultra-low emissions and its emission concentration is very low. Therefore, the existing GB / T16157-1996 "Methods for the Measurement of Particulate Matter in the Exhaust of Stationary Pollution Sources and Sampling of Gaseous Pollutants" for smoke and dust cannot be satisfied with the present The test requirements for low smoke emission concentration, because the filter cartridge has a low capture efficiency for particles with an average particle size below 0.5 μm, thus missing solid PM 0.5 water soluble ions on

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