摘要
针对大型裂解炉用底部燃烧器对火焰形状、火焰刚性、热通量分布和NOx排放的要求,利用燃料分级原理,结合喷嘴和配风方面的研究确定了燃烧器的结构型式;通过多方案流体动力学模拟计算对燃烧器的结构进行改进,同时通过热态试验验证了燃烧器的污染物排放、热通量分布等性能,最终开发出具有自主知识产权的大型裂解炉用底部燃烧器。在1 Mt/a乙烯装置裂解炉的工业应用结果表明,裂解炉内燃烧完全,火焰扁平刚直,运行55 d时管壁最高温度为1 044℃,NOx排放量为127mg/m3(标准状态),燃烧器的性能完全满足裂解炉的工艺要求及环保要求。
Aiming at the request of ethylene cracking furnace hearth burner for the flame shape, the flame stability, the heat flux distribution and the NO,, emission, by fuel classification method combined with research of the burner tips and the wind channel, the original structure of the hearth burner was determined. The burner structure simulation, and the pollution emission and the heat was improved by computational fluid dynamics flux distribution were validated through thermal
出处
《石油化工》
CAS
CSCD
北大核心
2012年第3期319-324,共6页
Petrochemical Technology
关键词
氮氧化物
底部燃烧器
流体动力学模拟
乙烯裂解炉
nitrogen oxide
hearth burner
fluid dynamics simulation
ethylene cracking furnace
