摘要
通过模拟300 MW机组循环流化床(CFB)锅炉的选择性非催化还原(SNCR)脱硝过程,研究了反应温度、氨氮摩尔比、还原剂雾化粒径、还原剂喷射速度等对SNCR脱硝效果的影响,并对某电厂300 MW机组CFB锅炉的SNCR脱硝系统进行了优化。结果表明:在800~1000℃的反应范围内,随着温度和氨氮摩尔比的升高,脱硝效率随之提高;还原剂雾化粒径的增加和喷射速度的提高对脱硝效率提升的幅度很小;某300 MW机组CFB锅炉SNCR系统及运行参数优化后,锅炉在3个典型负荷下均实现了NO_(x)的超低排放,最大脱硝效率达到了74.2%。
By simulating the selective non-catalytic reduction(SNCR)denitration process of a 300 MW circulating fluidized bed(CFB)boiler,the effects of reaction temperature,ammonia-nitrogen molar ratio,reducing agent atomization particle size and reducing agent injection speed on denitrification efficiency of the SNCR flue gas denitration system were studied.The results show that,in the reaction range of 800~1000℃,with the increase of temperature and ammonia-nitrogen ratio,the denitration efficiency increases.Increasing the reducing agent atomization particle size and the injection speed has little effect on enhancing the denitration efficiency.By optimizing the SNCR denitraiton system and the operating parameters,the 300 MW CFB boiler achieves ultra-low NO_(x) emissions at three typical loads,and the maximum denitrification efficiency reaches 74.2%.
作者
辛胜伟
韩平
段彩丽
王虎
顾从阳
谢国威
邬万竹
杜佳军
XIN Shengwei;HAN Ping;DUAN Caili;WANG Hu;GU Congyang;XIE Guowei;WU Wanzhu;DU Jiajun(CHN Energy Group CFB Technology R&D Center,Xi’an 710065,China;CHN Energy Group Guoyuan Power Co.,Ltd.,Beijing 100033,China;CHN Energy Group Guoshen Technical Research Institute,Xi’an 710065,China)
出处
《热力发电》
CAS
CSCD
北大核心
2021年第11期122-129,共8页
Thermal Power Generation
基金
国家重点研发计划项目(2016YFB0600201)。
