化工学报 ›› 2019, Vol. 70 ›› Issue (8): 2823-2834.DOI: 10.11949/0438-1157.20190287

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燃煤有机污染物生成排放特性与采样方法研究进展

徐静颖(),卓建坤,姚强()   

  1. 清华大学能源与动力工程系,北京 100084
  • 收稿日期:2019-03-27 修回日期:2019-04-20 出版日期:2019-08-05 发布日期:2019-08-05
  • 通讯作者: 姚强
  • 作者简介:徐静颖(1991—),女,博士研究生,xujy14@mails.tsinghua.edu.cn
  • 基金资助:
    国家重点研发计划项目(2018YFB0605201)

Research progress on formation, emission characteristics and sampling methods of organic compounds from coal combustion

Jingying XU(),Jiankun ZHUO,Qiang YAO()   

  1. Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
  • Received:2019-03-27 Revised:2019-04-20 Online:2019-08-05 Published:2019-08-05
  • Contact: Qiang YAO

摘要:

煤燃烧过程在生成SO2、NOx和颗粒物等常规污染物的同时,还会产生有机污染物。我国燃煤电厂数量多,燃煤产生的非甲烷挥发性有机物(NMVOC)已经占到了人为源排放总量的1/3。然而,已有的针对有机污染物的研究主要关注的是工业源和室内环境中的挥发性有机物,对燃煤过程产生的有机污染物研究较少。由于煤的组分复杂,燃烧温度高、燃烧工况多变,且产生高尘高湿的烟气,这些特殊环境决定了煤燃烧过程有机污染物的生成排放特性及其采样方法与工业源有所不同。本文对原煤有机污染物的前体赋存形态、燃煤过程有机污染物的生成排放特性以及有机污染物的采样与分析方法进行了较全面的综述,并探讨了燃煤有机污染物相关研究的发展方向。

关键词: 煤燃烧, 有机物, 热解, 生成排放特性, 采样分析

Abstract:

The coal combustion process produces organic pollutants while generating conventional pollutants such as SO2, NOx and particulate matter. Due to the existence of a large number of pulverized coal combustion power plants, coal combustion accounts for about one-third of the total amount of anthropogenic non-methane volatile organic compound (NMVOC) emissions in China. However, previous studies on organic pollutants mainly focused on VOCs emissions from other sources, e.g. industrial sources and indoor environments. The formation and emission of organic pollutants during coal combustion is less discussed. The species emitted by coal combustion may be quite different from other non-combustion sources. The sampling and analysis methods also differ due to the complex composition of coal, the variable combustion conditions, and the harsh environment concerning the relatively high temperature, high humidity, and high dust-containing flue gas. In this paper, the organic compounds in raw coal, the formation and emission characteristics of organic compounds in the coal combustion process and the corresponding sampling and analysis methods were reviewed. The future work on coal-fired organic pollutants was also discussed.

Key words: coal combustion, organic compounds, coal pyrolysis, formation and emission characteristics, sampling and analysis method

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