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Method and device for studying the mechanism of photo-oxidative derivatization of burning coal to generate secondary organic aerosols

An aerosol and photo-oxidation technology, which is applied in the direction of measuring devices, chemical analysis by combustion, particle and sedimentation analysis, etc., can solve the problems of lack and lack of research systems, etc., and achieve the effect of simple operation and strong practicability

Active Publication Date: 2017-08-11
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • Method and device for studying the mechanism of photo-oxidative derivatization of burning coal to generate secondary organic aerosols

Examples

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Embodiment 1

[0024] In this example, see figure 1 , a device for studying the mechanism of secondary organic aerosol generated by coal-burning photo-oxidation, consisting of a gas distribution system, a static coal denudation experiment analysis system, a static coal combustion experiment analysis system, a dynamic coal combustion photo-oxidation experiment analysis system and corresponding connecting pipes The gas distribution system consists of a zero air generator 13, a gas distribution platform 14 and a multi-way valve 1. The zero air generator 13 delivers air to the gas distribution platform 14 and then enters an inlet of the multi-way valve 1. Static coal erosion The experimental analysis system includes a single particle aerosol mass spectrometer 10, and the raw coal particles are sent into the single particle aerosol mass spectrometer 10 through the gas distribution system, and the chemical composition and particle size analysis are performed to obtain the chemical composition and p...

Embodiment 2

[0037] This embodiment is basically the same as Embodiment 1, especially in that:

[0038] In this embodiment, the photochemical test and analysis system of the dynamic coal combustion photooxidation experimental analysis system also includes a gas chromatograph, which performs gas chromatographic auxiliary analysis on the secondary reaction products of coal burning photochemistry, and combines the detected gas chromatographic auxiliary analysis data As an analysis of the intermediate state data of coal in the photochemical reaction, through multi-dimensional data analysis, the mechanism of the formation of secondary organic aerosols from the photooxidation of coal can be more accurately obtained.

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Abstract

The invention discloses a method for studying the mechanism of secondary organic aerosol generated by coal-fired photooxidative derivation. Proton transfer reaction mass spectrometry and single particle aerosol mass spectrometry detect the chemical composition and particle size distribution of volatile organic compounds and particulate matter in coal-fired; use the smoke chamber system to investigate the chemical composition and particle size of gas and particulate matter in the photochemical reaction of coal-fired under different combustion times. The parameters such as diameter and their change trends were analyzed, and the intermediate state data were analyzed, and compared with the data of static coal denudation experiments and static coal combustion experiments, the mechanism of the secondary organic aerosol formation process by coal-burning photooxidation derivatives was obtained. The invention also discloses a device. The invention can simulate the evolution process of coal combustion in different atmospheric environments, accurately capture its intermediate products, and quantify the influence of coal combustion and post-combustion photooxidation.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/12G01N27/62G01N15/02G01N27/623
CPCG01N15/02G01N27/62G01N31/12
Inventor 田学鑫刘梅石学峰董俊国程平苗萌韩明聪庞星龙
Owner SHANGHAI UNIV