焦炉燃烧室煤粉-燃气混燃过程数值模拟  

Numerical simulation of pulverized coal-gas combined combustion in coke oven combustion chamber

作　　者：仇灏[1] 张雪红 刘和平 QIU Hao;ZHANG Xue-hong;LIU He-ping(State Key Laboratory of Advanced Steel Processes and Products,Central Iron and Steel Research Institute,Beijing 100081,China;Central Research Institute(Wuhan),Baosteel,Wuhan 430080,Hubei,China;Material Digtal Research and Development Center,China Iron and Steel Research Institute Group Beijing 100081,China)

机构地区：[1]钢铁研究总院有限公司先进钢铁流程及材料国家重点实验室,北京100081 [2]宝钢股份中央研究院(武汉分院),湖北武汉430080 [3]中国钢研科技集团有限公司数字化研发中心,北京100081

出　　处：《中国冶金》2022年第5期71-79,共9页China Metallurgy

基　　金：国家重点研发计划资助项目(2017YFB0304303)。

摘　　要：为简化焦化厂煤粉资源化利用工艺,改善焦炉燃烧室炉墙温度均匀性,提出新型煤粉-燃气混燃供热模式,并通过数值模拟方法研究了喷煤时空燃比、喷煤位置对JN60焦炉燃烧室内温度特征、炉墙温度分布的影响。结果表明,当空燃比为1.2∶1.0时,燃烧室中部喷吹煤粉会降低炉墙平均温度、增加炉墙高向温差;喷吹煤粉条件下增大空燃比能有效提升炉墙温度;煤粉在燃烧室底部喷吹时可起到延迟燃烧、提高炉墙高向温度均匀性的效果。In order to simplify resource utilization process of pulverized coal in coking plant and improve temperature uniformity of coke oven combustion chamber wall, a new pulverized coal-gas combined combustion technology was developed. The effects of air-fuel ratio and coal injection position on temperature characteristics and wall temperature distribution of JN60 coke oven combustion chamber were investigated by numerical simulation. The results show that when air-fuel ratio is 1.2∶1.0, pulverized coal injection in the middle of combustion chamber will reduce temperature and increase vertical temperature difference of chamber wall. Under pulverized coal injection condition, increasing air-fuel ratio can effectively improve the average temperature of chamber wall. When pulverized coal is injected at the bottom of combustion chamber, it can delay gas combustion and improve vertical temperature uniformity of chamber wall.

关 键 词：焦炉 燃烧室 煤粉喷吹 数值模拟 立火道 

分 类 号：TQ520.6[化学工程—煤化学工程]