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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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150mw机组锅炉低nox燃烧系统改造与试验研究
, PP. 105-110
Keywords: 150mw机组,锅炉,低nox燃烧,sofa,浓淡燃烧器,nox排放浓度
Abstract:
为降低nox排放浓度,减轻结焦,对150mw机组480t/h四角切圆燃烧锅炉采用燃料浓淡分级与加装分离燃尽风(sofa)相结合的技术进行燃烧系统改造,并进行了改造后燃烧优化调整试验。结果表明:sofa挡板55%开度且开启2层挡板时,锅炉nox排放量均可降至250mg/m3以下,较改造前的550mg/m3降低约55%,减排效果明显；燃用五彩湾煤时,锅炉效率可达到92%以上,最优工况下可达到92.48%,较改造前91.69%提高了0.79%;炉膛出口烟温能够控制在850℃以下,有效地减轻了高温受热面结焦,保证锅炉长期经济、安全运行。
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