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热力发电  2015 

燃尽风率对锅炉燃烧特性影响的数值模拟

, PP. 108-112

Keywords: 锅炉,燃烧特性,燃尽风率,数值模拟,nox排放

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Abstract:

对某电厂330mw机组锅炉低nox燃烧器改造后存在的受热面过热问题,通过数值模拟与试验相结合的方法,研究燃尽风率变化对炉内温度场、氧气质量浓度分布及nox排放的影响,并将模拟数据与试验结果进行了对比。结果表明:数值模拟与试验研究结果较为吻合,燃尽风率的增加有利于降低nox排放,但对锅炉运行的安全性和经济性会产生一定影响,综合考虑nox排放和锅炉运行安全性,燃尽风率应控制在25%~30%。

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