Numerical simulation was used to study the combustion procession,temperature distridution and NO_x emission for a 10 t/h chain boiler with and without flue gas recycle.The differences were contrasted when flue gas is recycled to the primary wind inlet and to secondry wind inlet.The results show that the temperature distridution decreased with flue gas recycle and there is less NO_x emission.And when flue gas is recycled to secondry wind inlet,the NO_x emission dropped mostly.The result offer a reference to ...
【更新日期】
2012-07-18
【分类号】
TQ536
【正文快照】
中国工业锅炉燃料以煤为主,目前生产的10,20、35口h的工业锅炉绝大多数是采用链条炉排。这些锅炉的NO:体积分数一般在150 x 10一6一300x一。一6。No:对环境人类都有很大的危害。烟气再循环是使用较多的低氮燃烧技术。它是在锅炉的空气预热器前抽取一部分烟气返回炉内,利用惰性?
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