SCR脱硝系统工艺方案设计及影响分析

doi:10.19698/j.cnki.1001-6171.20232032

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摘要分析了水泥窑烟气特性和SCR脱硝系统运行后对水泥窑及余热发电系统的影响，针对实施SCR脱硝的难点，确定采用“高温高尘”SCR脱硝工艺技术路线,以实现窑尾氮氧化物的超低排放。采用“高温高尘”SCR脱硝系统工艺方案，氮氧化物排放浓度可从300mg/Nm³降低至45mg/Nm³，达到超低排放要求，氨逃逸浓度<5mg/Nm³，吨熟料生产成本预计增加4.25元，余热发电系统总发电量预计减少0.67%。

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	张冬冬
	王朝雄

关键词: SCR脱硝系统氨逃逸 NO_X超低排放

Abstract:

The flue gas characteristics of cement kiln and the influence of SCR denitration system on cement kiln and waste heat power generation system were analyzed. In view of the difficulties in implementing SCR denitration, the technical route of "high temperature and high dust" SCR denitration process was determined to achieve ultra-low emission of nitrogen oxides at the kiln tail. Using "high temperature and high dust" SCR denitration system process scheme, nitrogen oxide emission concentration can be reduced from 300mg/Nm³ to 45mg/Nm³, to meet the requirements of ultra-low emission, ammonia escape concentration <5mg/Nm³, tons of clinker production cost is expected to increase 4.25 yuan, the total power generation of waste heat power generation system is expected to reduce 0.67%.

Key words: SCR denitration system ammonia escape ultra-low NO_X emission

收稿日期: 2022-07-01 修回日期: 2023-03-25 出版日期: 2023-03-25 发布日期: 2023-03-25 整期出版日期: 2023-03-25

ZTFLH:

TQ172.688.9

引用本文:

张冬冬, 王朝雄. SCR脱硝系统工艺方案设计及影响分析[J]. 水泥技术, 2023, 1(2): 32-.
ZHANG Dongdong, WANG Chaoxiong. Process Design and Influence Analysis of SCR Denitration System. Cement Technology, 2023, 1(2): 32-.

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http://www.cemteck.com/CN/10.19698/j.cnki.1001-6171.20232032 或 http://www.cemteck.com/CN/Y2023/V1/I2/32

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