Method and device for studying mechanism that secondary organic aerosol is produced by photo-oxidation transformation of fuel coal

Abstract

The invention discloses a method for studying a mechanism that secondary organic aerosol is produced by photo-oxidation transformation of fuel coal. The method comprises the steps: subjecting raw coal to chemical component and particle size analysis via a single particle aerosol mass spectrometer according to the principle of laser ablation; detecting chemical component and particle size distributions of volatile organic matters and particulate matters in fuel coal by using proton transfer reaction mass spectrometry and single particle aerosol mass spectrometry; by using a smog box system, inspecting parameters such as chemical components and particle size of gas and particulate matters in the fuel coal in a photochemical reaction within different combustion times, and their variation trends, analyzing intermediate state data, and comparing data of a static coal erosion experiment and a static coal combustion experiment to obtain the mechanism that secondary organic aerosol is produced by photo-oxidation transformation of fuel coal. The invention also discloses a device. It is possible to simulate transformation processes of the fuel coal in different atmospheric environments, accurately capture intermediate state products of the fuel coal and quantify the effects of coal combustion and post-combustion photo-oxidation.

Description

technical field [0001] The invention relates to a method and a device for studying the evolution process of coal combustion products, in particular to a method and a device for studying the mechanism of coal-burning photooxidation reaction, which are applied in the technical field of atmospheric control. Background technique [0002] Coal is the basic energy source of our country. In recent years, driven by the rapid development of the national economy, my country's coal production and consumption have shown a momentum of rapid growth. my country is a country rich in coal, poor in oil, and low in gas. This characteristic determines that coal will occupy a dominant position in primary energy production and consumption and will not change for a long time. At present, my country's available coal reserves account for about 11.67% of the world's coal reserves, ranking third in the world. my country is the largest coal-producing country in the world today, and its coal productio...

AI Technical Summary

Problems solved by technology

At present, the formation mechanism of secondary organic aerosols is not very clear, especially how to generate secondary organic aerosols step by step after coal combustion. This is due to the lack of systematic research on the one hand. System and precision instruments that can accurately capture intermediate products in real time and online. On the other hand, there is a lack of systematic research on the mechanism of secondary organic aerosols generated by coal-fired photooxidative derivatives.

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