| 燃气锅炉轴向空气分级燃烧NOx生成特性研究 |
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| 引用本文： | 王志宁,蔡晋,张杨鑫,张扬,吕俊复,郑平安.燃气锅炉轴向空气分级燃烧NOx生成特性研究[J].工业锅炉,2021(2):1-7. |
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| 作者姓名： | 王志宁 蔡晋 张杨鑫 张扬 吕俊复 郑平安 |
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| 作者单位： | 清华大学山西清洁能源研究院;清华大学能源与动力工程系;西安普华能源环保科技有限公司 |
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| 基金项目： | 四川省科技计划项目(2018JZ0021&2019YFS04976);清华大学-中国华能集团有限公司基础能源联合研究院(U20YYJC08) |
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| 摘 要： | 通过实验与数值模拟研究了轴向空气分级对甲烷燃烧过程NOx生成的影响,并在一台45 t/h燃气锅炉上进行了工程验证。结果表明,一次风过量空气系数0.8、还原区停留时间为1 s时,NOx排放浓度可降低30%。工业现场试验表明联合采用低氮燃烧器、空气分级和烟气再循环等技术后NOx减排达80%以上。
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| 关 键 词： | 燃气锅炉 氮氧化物 空气分级 烟气再循环 |
Research on NOx Generation Characteristics of Axial Air Staged Combustion in Gas-fired Boiler |
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| WANG Zhining,CAI Jin,ZHANG Yangxin,ZHANG Yang,LYU Junfu,ZHENG Pingan.Research on NOx Generation Characteristics of Axial Air Staged Combustion in Gas-fired Boiler[J].Industrial Boiler,2021(2):1-7. |
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| Authors: | WANG Zhining CAI Jin ZHANG Yangxin ZHANG Yang LYU Junfu ZHENG Pingan |
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| Affiliation: | (Shanxi Institute of Clean Energy,Tsinghua University,Taiyuan 030000,Shanxi,China;Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China;Xi′an Puhua Energy Environmental Protection Technology Co.,Ltd.,Xi’an 713700,Shaanxi,China) |
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| Abstract: | The effect of air staging on NOx production in the methane combustion process was experimentally and numerically studied,and an industrial scale field trial in a 45 t/h gas-fired boiler was also conducted.The results show that the NO x formation reduced by 30%if the excess air ratio of the primary air was 0.8 and the residence time in the reductive zone was 1 s.The field trial results indicated that the overall NOx reduction would reach up to 80%if the low-NOx burner,air-staging and flue gas circulation were combinedly implemented. |
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| Keywords: | gas-fired boilers nitrogen oxide air staging flue gas recirculation |
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