Abstract: The mechanism of NO release in the cement precalciner was analyzed and a mechanism model was developed.The NO release was simulated based on full-scale modeling for the precalciner, and the modeling results were compared with measurements to validate the simulation method.The cement raw meal inlet was relocated.Without affecting the operation, simulation was made to predict the decrease of NO under staged air, staged fuel and simultaneous staged air-staged fuel.It was found that the case of staged fuel was more effective.The results are useful for decreasing NO release in the precalciner.

摘要： 针对水泥行业中水泥分解炉产生NO的过程进行了机理性分析，同时推导了描述分解炉中NO生成的机理性模型，并对分解炉中的NO生成进行了全三维模拟研究.模拟结果与现场测试结果进行了比较，验证了模拟的合理性.对分解炉的生料入口位置进行了改造，在不影响生产的前提条件下，对单独分风、分料和同时分风分料时降低分解炉内NO生成的情况进行了模拟优化，分析得到了分料方法是降低分解炉中NO的最有效途径的结论，为降低水泥分解炉中NO排放提供了实用的参考依据.