A concentration-adjustable salt particle aerosol generation system

Abstract

A salt particle aerosol generating system with adjustable concentration of the present invention is composed of an air compressor, a filter, a dryer, an air buffer tank, a first needle valve, a first air flow meter, an air heater, a first venturi The inner tube, the second needle valve, the second air flow meter, the salt solution storage tank, the metering pump, the aerosol generation chamber, the controller, the online laser particle size analyzer, the second venturi tube and the aerosol buffer tank are composed. By setting an air buffer tank, the dry and clean air in the tank is input into the venturi tube and mixed with the salt particle aerosol with a higher mass concentration, so as to realize the dilution of the salt particle aerosol. The mass concentration and flow rate of the saturated salt solution injected by the metering pump can be used to calculate the mass flow rate of the salt particles, and the dilution degree of the salt particle aerosol can be controlled by adjusting the amount of dilution air, thereby providing a solution for related scientific research. Concentration-adjustable salt particle aerosol generation system. The system of the present invention has the advantages of convenient and accurate regulation of the salt particle concentration.

Description

technical field [0001] The invention relates to the field of aerosol generation, in particular to a salt particle aerosol generation system with adjustable concentration. Background technique [0002] Sulfur dioxide (SO2) emitted from industrial and agricultural production and living processes 2 ), nitrogen oxides (NOx) and ammonia (NH 3 ) Sulfates, nitrates and ammonium salts formed by chemical reactions are important components of atmospheric particulate pollutants. In the research field of controlling and eliminating atmospheric particulate pollutants, an aerosol generating device capable of controlling the particle size of salt particles is urgently needed. The salt particle aerosol produced by the device can be used for experimental research on the simulation, testing, evaluation, inspection and other scientific aspects of the gas environment, especially the experimental research on sulfate, nitrate and ammonium salt particle aerosols. [0003] After atomizing the sa...

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Problems solved by technology

The above-mentioned invention can control the particle size of salt particles in aerosol by using the agglomeration of sound waves, but the mass concentration of salt particles in aerosol is uncontrollable, and the range of mass concentration of salt particles required in the research and application field of the device is relatively large. Especially in the study of atmospheric environment, the mass concentration of particulate matter is relatively dilute, so it is necessary to dilute the mass concentration of salt particulate matter generated by it

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