分解炉梯度燃烧自脱硝技术的研究与工程应用
1 天津水泥工业设计研究院有限公司; 2 湖北京兰水泥集团有限公司
Research and Engineering Application of the Staged Combustion Self-denitration Calciner Technology
1.Tianjin Cement Industry Design & Research Institute Co., Ltd. 2.Hubei Jinglan Cement Group Co., Ltd.
摘要 探讨了水泥窑炉燃烧过程中NOx的生成机理,介绍了第二代分解炉梯度燃烧自脱硝的技术及实验室竖式电炉模拟分解炉内气体反应的试验,研究了不同炉膛温度、停留时间、还原剂浓度下CO与NO的反应历程。在湖北某水泥生产线技改项目中的工程应用表明,梯度燃烧自脱硝分解炉可实现脱硝效率>60%,出分解炉烟气NOx浓度<400mg/m3 (标),月平均氨水用量下降60%以上,每年可节约氨水使用成本200万元以上。
关键词:
水泥窑
分解炉
梯度燃烧技术
脱硝效率
Abstract: The formation mechanism of NOx in the combustion process of cement kiln was discussed. The staged combustion self-denitration technology of calciner was introduced. A laboratory vertical electric furnace research platform was set up to simulate NOx related reaction in calciner. Experiment was carried out to obtain the relevant reaction principleof CO and NO, and correlation between reaction rate and different temperatures, residence times and atmosphere were studied. The application of a cement project in Hubei showed self-denitration calciner achieved denitration efficiency more than 60%, NOx concent of calciner outlet gas <400mg/Nm3 , monthly average ammonia consumption decreased by more than 60%, saving more than 2 million CNY per year.
Key words:
cement kiln
calciner
staged combustion technology
denitration efficiency
收稿日期: 2019-01-16
出版日期: 2019-07-25
发布日期: 2019-08-15
整期出版日期: 2019-07-25
引用本文:
陈昌华, 代中元, 彭学平, 姚国镜.
分解炉梯度燃烧自脱硝技术的研究与工程应用
[J]. 水泥技术, 2019, 1(4): 19-23.
CHEN Changhua, DAI Zhongyuan, PENG Xueping, YAO Guojing.
Research and Engineering Application of the Staged Combustion Self-denitration Calciner Technology
. Cement Technology, 2019, 1(4): 19-23.
链接本文:
http://www.cemteck.com/CN/10.19698/j.cnki.1001-6171.20194019
或
http://www.cemteck.com/CN/Y2019/V1/I4/19
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