新型干法水泥窑氮氧化物排放及控制因素分析

发布时间：2018-02-28 18:40

  本文关键词： 新型干法水泥窑 烟气脱硝 分级燃烧 燃料型NOX　出处：《环境污染与防治》2016年02期 　论文类型：期刊论文

【摘要】：以3个新型干法水泥窑为研究对象,探讨了水泥窑的氮氧化物(NOX)排放情况及主要影响因素。水泥窑窑尾烟气中,NO占NOX总排放的80%(质量分数)以上。水泥窑排放的NOX以燃料型NOX为主。采用分级燃烧有利于降低水泥窑窑尾烟气中的NOX排放浓度,NOX下降比例为23%~29%。水泥窑吨熟料NOX排放量高于1.30kg,且不同水泥窑吨熟料NOX排放量存在较大差异。分解炉温度高于950℃时,烟气中的NOX排放浓度明显偏高,控制分解炉温度对水泥窑烟气脱硝至关重要。研究成果能为现阶段中国水泥行业烟气脱硝过程控制提供理论参考与实践指导。
[Abstract]:Three new dry-process cement kilns were studied. This paper discusses the nitrogen oxide (NOX) emission from cement kiln and its main influencing factors. The content of no in flue gas of cement kiln kiln is more than 80% (mass fraction) of total NOX emission. The NOX emitted from cement kiln is mainly fuel-type NOX. It is beneficial to reduce the NOX emission concentration in flue gas of cement kiln. The decrease ratio of NOX emission is 230.The NOX emission of cement kiln clinker is higher than 1.30kg, and the NOX emission of clinker is different in different cement kilns. When the calciner temperature is higher than 950 鈩，

本文编号：1548482