摘要
燃煤产生的颗粒物是大气颗粒物的主要来源之一。主要描述了燃煤过程中颗粒物的产生机理,以及火电厂主要的除尘技术和装置。电厂尾气主要流经选择性催化还原脱硝装置、除尘器、湿法烟气脱硫等设施,各个设施对粉尘脱除都有一定的影响。随着国家排放标准的日益严格,各项装置都进行了一定的改进或提升。湿式电除尘、团聚技术、超净电袋等一系列的新技术相继被运用在实际电厂中,并取得了一定的功效。随着技术的发展,各种技术的相互协调和并存有助于各种类型的燃煤电厂达到超低排放的标准。
A majority of dust in atmospheric environment is generated by coal combustion.The particle formation mechanisms during coal combustion and the main precipitation technology were reviewed.In actual power plant,selective catalytic reduction(SCR),electrostatic precipitator(ESP),wet flue gas desulfurization(WFGD)and other devices can play their own roles in dust removing.However,since the emission standard of dust in China gets stricter and stricter,kinds of devices were reformed and some new technologies(wet electrostatic precipitator,agglomeration technologies,ultraclean electrostatic-fabric integrated precipitator,etc.)were proposed.With the development of various technologies,the coordination of different devices can help various coal-fired power plants to accomplish the demand of ultra-low emission.
作者
徐明厚
王文煜
温昶
于敦喜
刘小伟
XU Minghou;WANG Wenyu;WEN Chang;YU Dunxi;LIU Xiaowei(State Key Laboratory of Coal Combustion(Huazhong University of Science and Technology),Wuhan 430074,Hubei Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2019年第22期6627-6639,共13页
Proceedings of the CSEE
基金
国家重点研发计划项目(2018YFB0605104)
国家自然科学基金委国际合作重大项目(51661125011)
湖北省技术创新专项重大项目(2017ACA087)~~
关键词
超低排放
电厂除尘
超净电袋
团聚技术
湿式电除尘
协调合作
ultra-low emission
power plant precipitation
integrated precipitator
agglomeration
wet electrostatic precipitation
coordination
