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。
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.
作者
徐静颖
卓建坤
姚强
XU Jingying;ZHUO Jiankun;YAO Qiang(Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2019年第8期2823-2834,共12页
CIESC Journal
基金
国家重点研发计划项目(2018YFB0605201)
关键词
煤燃烧
有机物
热解
生成排放特性
采样分析
coal combustion
organic compounds
coal pyrolysis
formation and emission characteristics
sampling and analysis method