摘要
锑是一种潜在有毒痕量元素,燃煤电厂是中国大气锑污染的重要来源。本研究通过对世界各国文献综述,详细介绍了煤中锑的含量及赋存形态,并从煤燃烧过程中锑的挥发行为、迁移特性和产物分布等角度阐释了燃煤过程中锑的迁移转化机制。此外,总结了电厂在燃烧前、燃烧中和燃烧后等不同阶段锑的排放控制技术现状。旨在为全面认知燃煤过程中锑的迁移转化及污染控制提供理论参考和技术指导。
Antimony is a trace element with potential toxicity.As a major source of atmospheric antimony pollution in China,the fate of antimony released during coal combustion has been attracting increasing concern.In this study,the contents and occurrence modes of antimony in coals were summarized,with subsequent discussions on the vaporization and transformation behavior of antimony in the coal combustion process.The partitioning of antimony in bottom ash,size-segregated fly ash particles as well as flue gas were also presented.Regarding the potential control methods for antimony emission,technologies facing pre-combustion,combustion and post-combustion stages were proposed respectively.It aims to provide a guideline for understanding the behavior of antimony migration and emission control during coal combustion.
作者
赵思岚
刘慧敏
胡红云
黄永达
袁兵
邓双
贾建丽
ZHAO Si-lan;LIU Hui-min;HU Hong-yun;HUANG Yong-da;YUAN Bing;DENG Shuang;JIA Jian-li(Chinese Research Academy of Environmental Sciences,Beijing100012,China;State Key Laboratory of Coal Combustion,School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan430074,China;College of Chemistry and Engineering,China University of Mining and Technology,Beijing100083,China)
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2020年第12期1476-1487,I0006,共13页
Journal of Fuel Chemistry and Technology
基金
国家重点研发计划项目(2018YFB0605101)
国家自然科学基金(52006078)资助。
关键词
锑
煤燃烧
挥发行为
迁移特性
排放控制
antimony
coal combustion
vaporization behavior
migration characteristic
emission control
