乙烯裂解炉脱硝降氮技术及其应用  

Research and Application of Denitration Technology in Ethylene Cracking Furnace

作　　者：薄建民 詹爽 张娣 张晋华 BO Jian-min;ZHAN Shuang;ZHANG Di;ZHANG Jin-hua(Beijing Branch,Wison Engineering(China)Co.,Ltd.)

机构地区：[1]惠生工程(中国)有限公司北京分公司

出　　处：《化工机械》2022年第3期509-514,523,共7页Chemical Engineering & Machinery

摘　　要：根据乙烯裂解炉构造特征,分析辐射段燃料燃烧产生氮氧化物的机理。从控制氮氧化物生成源头及其生成后的脱除两个角度,提出降低氮氧化物排放量的方法。采用低氮燃烧器技术,使火焰高温区面积明显减小,降低氮氧化物的生成量。采用SCR技术进一步降低氮氧化物总量,同时保证较低的氨逃逸量。将该设计应用到乙烯裂解炉上,成功实现氮氧化物的超低排放。Based on the technical characteristics of the ethylene-cracking furnace,the generation mechanism of NO_(x) during the fuel combustion in radiation section was analyzed.The method to reduce NO_(x) emissions from the nitric oxide formation and NO_(x) removal was proposed.Through applying low-NO_(x) combustion technology,the high-temperature region of flame can become smaller and less NO_(x) would be produced;through employing SCR system,the total amount of NO_(x) can be further reduced and lower ammonia escape be guaranteed.Application of low-NO_(x) combustion and SCR system in the ethylene cracking furnace achieves the purpose of ultra-low NO_(x) emissions.

关 键 词：乙烯裂解炉 氮氧化物 低氮燃烧器 SCR技术 CFD模拟 

分 类 号：TQ052.6[化学工程]