焦炉加热过程中热力型氮氧化物的生成及影响因素研究  

Research on Formation and Influence Factors of Thermal NO_x During Coke Oven Heating

作　　者：余明程[1,2] 王光华[1] 李文兵[1] 朱政[1] 李进[1] 舒广[1] 朱亦男[1] YU Mingcheng WANG Guanghua LI Wenbing ZHU Zheng LI Jin SHU Guang ZHU Yinan(College of Chemical Engineering and Technology, Wuhan University of Science and Technology Wuhan 430051)

机构地区：[1]武汉科技大学化学工程与技术学院,武汉430081 [2]武汉平煤武钢联合焦化有限责任公司,武汉430082

出　　处：《工业安全与环保》2016年第10期75-78,共4页Industrial Safety and Environmental Protection

摘　　要：以武钢焦化公司6 m、7 m、7.63 m 3种炉型焦炉为对象,研究了焦炉加热过程中热力型氮氧化物的生成规律和影响因素。结果表明,焦炉氮氧化物排放量与炉型、空气过剩系数以及立火道温度有着直接的关系。7 m、7.63 m焦炉的氮氧化物排放量平均值均在210 ppm以下,6 m焦炉氮氧化物排放量平均值在400 ppm以上。6 m焦炉废气中NOx排放量明显高于7 m和7.63 m焦炉,这是由于7 m和7.63 m焦炉采用了分段加热方式,可以有效控制在焦炉加热过程中热力型NOx的生成,有利于减少最终烟气中NOx的浓度。The formation mechanisms and influence factors of thermal NOxin the process of coke oven combustion are investigated,which focuses on the WISO＇s 6 m,7 m,and 7. 63 m coke oven. Results show that the emissions of nitrogen oxides about coke oven have a direct relationship with the furnace,excess air ratio and flue temperature. The average NOxemission caused by 7 m and 7. 63 m coke oven is under 210 ppm,while the 6 m coke oven is above 400 ppm. The amount of nitrogen oxides in the exhaust gas from 6m coke oven is apparently higher than that from 7 m and7. 63 m coke oven,because both of the 7 m and 7. 63 m coke oven are using segmented heating,which can effectively control production of thermal NOxin the process of heating and reduce the NOxin the flue gas.

关 键 词：热力型氮氧化物 空气过剩系数 立火道温度 分段加热 

分 类 号：X784[环境科学与工程—环境工程]