大型CFB锅炉增设脱硝设备必要性和可行性探讨  

Necessity and Feasibility Discuss of Adding Deritrification Device on Large CFB Boiler

作　　者：张志伟[1] 张缦[2] 姜孝国[1] 王凤君[1] 刘恒宇[1] 

机构地区：[1]哈尔滨锅炉厂有限责任公司,黑龙江哈尔滨150046 [2]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《锅炉制造》2010年第2期39-41,45,共4页Boiler Manufacturing

摘　　要：为了探讨大型循环流化床(CFB)锅炉增设脱硝设备的必要性和可行性,针对不同煤质的现场实测数据进行分析,可知大型CFB锅炉在不增加脱硝设备的情况下,NOx排放水平可以达到国家环保要求。为了达到超低水平NOx排放,通过理论分析,结合工程实践,认为CFB锅炉不适宜采用选择性催化还原法(SCR)脱硝技术,而在分离器区域采用选择性非催化还原(SNCR)脱硝技术可以实现。For discussing the necessity and feasibility of adding the denitrification equipment on the large scale Circulating Fluidized Bed （CFB） boiler, the operation data were analysed for the CFB boiler fired different coal, and the NOx emission can meet the requirements of environmental protec- tion without the denitrification equipment. In the case of the very low NOx emission is required, based on the theoretical anlysis and project practice,the Selected Catalystic Reduction（SCR） deni- trification technology is not considered to be suitable for the CFB boiler, but Selected Non - Catalys- tic Reduction（SNCR） technology at cyclone area can realize effective denitrification in CFB boiler.

关 键 词：循环流化床锅炉 选择性催化还原 选择性非催化还原 脱硝系统 

分 类 号：TM621[电气工程—电力系统及自动化]