罗志,王晓冰,潘栋,何育东,晋中华,尚桐,范玮,邓彪,任建永,兰永胜,杨小金,杨晓刚,李淑宏

• 1:西安热工研究院有限公司
• 2:西北工业大学动力能源学院
• 3:华能海南发电股份有限公司
• 4:华能山东发电有限公司

摘要(Abstract)：

截至2021年底，全国已有超过95%的燃煤火电机组实现了氮氧化物超低排放，剩余均为燃用无烟煤的W火焰锅炉，其产生的氮氧化物质量浓度高达750～1 200 mg/m~3，实现超低排放难度大，是我国实现超低排放政策的“最后一公里”。目前，选择性催化还原（SCR）脱硝流场技术主要有“SCR分区混合动态调平技术”“全烟道断面混合流场技术”“常规精准喷氨技术”等。以某设计脱硝效率需高达95%的W火焰锅炉为例，通过计算流体力学（CFD）模拟的方式对比3种技术的性能指标，“SCR分区混合动态调平技术”的各项指标明显优于其他技术。工程改造后，在脱硝系统入口氮氧化物质量浓度为1 000 mg/m~3，出口低于50 mg/m~3时，可实时保持氨逃逸量小于3μL/L，远超常规SCR脱硝系统最高设计效率（93%），为W火焰锅炉氮氧化物超低排放提供了新的技术路线。

关键词(KeyWords)： W火焰锅炉;脱硝;SCR;流场技术;氨逃逸;分区混合

Abstract:

Keywords:

基金项目(Foundation): 中国华能集团有限公司总部科技项目（HNKJ21-H46,HNKJ22-HF48）;; 陕西省重点研发计划项目资助（2023-YBGY-289）~~

作者(Author): 罗志,王晓冰,潘栋,何育东,晋中华,尚桐,范玮,邓彪,任建永,兰永胜,杨小金,杨晓刚,李淑宏

DOI: 10.19666/j.rlfd.202310160

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