Atmospheric aerosol smoke system for simulating open burning of biomass and measuring number concentration of particulate matters

Abstract

The invention relates to an atmospheric aerosol smoke system for simulating open burning of biomass and measuring number concentration of particulate matters. The system comprises a burning device forsimulating the open burning of the biomass, an aerosol smoke box for simulating a process of discharging atmospheric pollutants into the atmosphere, and a particular matter particle size measuring device, which are connected in sequence; the atmospheric aerosol smoke system has three functions at the same time, and stimulates the process of discharging the atmospheric pollutants in the open burning of the biomass accurately and really; the physical and chemical reactions of the atmospheric pollutants generated in open burning of crop straws at all heights of the troposphere and even the stratosphere can be simulated in an artificially controllable and repeatable manner, and meanwhile, the influence of complex weather, terrains and other factors in the actual environment is eliminated; andthe number concentrations of atmospheric particulate matters with different particle sizes discharged in the open burning of the biomass can be accurately reflected.

Description

technical field [0001] The invention relates to an atmospheric aerosol smog system for simulating open-air burning of biomass and capable of measuring particle number concentration. Background technique [0002] As a large agricultural country in the world, China ranks first in the world in the possession of crop stalks. According to statistics, more than 20% of the crop stalks are directly burned in the open air. Atmospheric aerosols produced by the open-air burning of crop straws play an important role in the deterioration of environmental quality (such as the formation of smog) and the reduction of visibility, and will participate in atmospheric transport and chemical processes. Their special optical properties and chemical composition affect the surface radiation. It can directly or indirectly affect the climate and gas-liquid circulation as cloud condensation nuclei; in addition, the atmospheric aerosols produced by the open-air burning of crop straws have significant i...

AI Technical Summary

Problems solved by technology

In order to simulate the reaction and transmission process of air pollutants produced in the open-air combustion of biomass, it is necessary to provide an environment with low temperature, low pressure, and continuous strong light radiation. However, due to the material and structure of the existing atmospheric aerosol smoke boxes (mostly FEP -Teflon film) limitations cannot be realized, in addition, the existing atmospheric aerosol smog chamber is more unable to measure the number concentration of particulate matter

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