摘要
随着国家环保法规的不断完善和发展,我国对燃煤电厂排放硫氧化物、氮氧化物以及重金属的控制日益严格。介绍了目前燃煤电厂中选择性催化还原(SCR)法的工艺流程、化学反应机理和以飞灰为载体的金属氧化物作催化剂的脱氮脱硫脱除重金属的实验情况。分析研究了在利用NH3作为还原剂的SCR法脱氮的基础上,同时脱氮脱硫脱除重金属的可行性。重点分析了在SCR反应器中采用以飞灰为载体的铜氧化物吸收剂同时脱氮脱硫脱除重金属的应用,并对我国燃煤电厂烟气脱氮脱硫脱除重金属的一体化研究提出了几点建议。
With the development and perfection of domestic environmental protection hws and regulations, the control of sulphur oxide, aitrogen oxide and heavy metal emission d the coal - fired power plants is becoming more and more strict. The technological process and chemical mechanism of SCR are introduced, also, the experiments of simultaneous denitrification, desulphurization and heavy metal removal by SCR are narrated, in which fly ash is used as metal oxide, e. g, catalyst carries.The feasibility of simultaneously denitrification, desulphurization and heavy metal removal is analyzed,based on SCR with NH3 as reducer, It is especially analyzed the application of copper oxide carried by fly ash to realize denitrification,desulphurization and heavy metal removal simultaneously, finally, some suggestions about the integrated comprehensive research of denitrification,desulphurization and heavy metal removal in coal - fired power plants are proposed.
出处
《工业安全与环保》
2006年第2期14-18,共5页
Industrial Safety and Environmental Protection
关键词
SCR
脱硫
脱氮
重金属
燃煤电厂烟气
SCR denitrification desulphurization heavy metal flue gas from coal- fired power plant
