Atmospheric aerosol smoke system for simulating open burning of biomass and measuring mass concentration

Abstract

The invention relates to an atmospheric aerosol smoke system for simulating an open burning of biomass and measuring a mass concentration. The system comprises a combustion device for simulating an open burning of biomass, an aerosol smoke box for simulating emission of atmospheric pollutants into the atmosphere, and a particulate mass concentration measuring device connected in sequence. The atmospheric aerosol smoke system of the invention has three functions simultaneously, that is, the process of the open burning of the biomass to emit the atmospheric pollutants can be accurately and trulysimulated; the physicochemical reactions of various heights of the atmospheric pollutants produced by the open burning of crop straw in the troposphere and even the stratosphere are artificially controllable and repeatedly simulated, and at the same time the effects of complex meteorological and topographical factors in the actual environment are excluded; and the mass concentration of differentemission factors can be accurately measured.

Description

technical field [0001] The invention relates to an atmospheric aerosol smog system for simulating open-air burning of biomass and capable of measuring mass 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 inhalation t...

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 can not measure the particle mass concentration

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