中国电机工程学报Issue(12)：3054-3060,7.DOI:10.13334/j.0258-8013.pcsee.2015.12.016
烟气组分和添加剂对选择性非催化还原脱硝特性的影响
Influences of Flue Gas Components and Additives on NO Reduction in the Selective Non-catalytic Reduction Process
摘要
Abstract
The effects of reaction temperature, flue gas components (O2, CO, water vapor), fly ash and alkali metal additives on NO reduction during the selective non-catalytic reduction (SNCR) process were investigated in an entrained flow reactor, and NO reduction mechanism was also analyzed. The results indicate that: NO removal efficiency of SNCR shows a trend of increase first and decrease later with increasing reaction temperature. NO removal efficiency shows a pattern of rapid increase first and decrease later with increasing oxygen content, and the best NO removal efficiency of 84.6%is obtained when 2%oxygen was used. The additive of carbon monoxide has a certain adverse effect on NO reduction in the SNCR process. NO removal efficiency shows a tendency of increase first, decrease later and being stable gradually with increasing water vapor (0~15%) in the flue gas, and the best NO removal efficiency of 73.5%is obtained at 4%water vapor. Alkali metal (K, Na) additives have significant promoting effects on NO reduction, but the fly ash has a certain adverse effect on NO reduction in the SNCR process. NO removal efficiency through SNCR can reach 84.9% while adding 125μmol/mol Na2CO3 in the flue gas. NO removal efficiency of SNCR still reaches 72.1% through the coupling effect of water vapor, CO, Na2CO3 and fly ash.关键词
选择性非催化还原/脱硝/烟气组分/飞灰/添加剂Key words
selective non-catalytic reduction (SNCR)/NO reduction/flue gas components/fly ash/additives分类
能源科技引用本文复制引用
郝江涛,于伟,卢平,徐森荣,吴佳艺,孙桐,尹欣怡..烟气组分和添加剂对选择性非催化还原脱硝特性的影响[J].中国电机工程学报,2015,(12):3054-3060,7.基金项目
国家自然科学基金项目(51476079，51076067)；江苏省自然科学基金项目(BK2010081)。Project Supported by National Natural Science Foundation of China (51476079,51076067) （51476079，51076067）
Jiangsu Provincial Natural Science Foundation of China (BK2010081) （BK2010081）
