摘要
在不增加工艺装置数量,不增加石脑油原料消耗量的前提下,将70万t/a乙烯联合装置的乙烯、汽油加氢、芳烃抽提3套工艺装置的常规流程重新组合改进为新加氢(前置)和新抽提(前置)2个流程,并对新旧流程进行了技术、经济的比较分析。结果表明,与常规流程相比,新加氢流程和新抽提流程均可减少裂解结焦量,使装置的生产大检修周期由1年1次延长到2年1次,乙烯产量可分别提高4.32万t/a,3.33万t/a,三烯(乙烯、丙烯、丁二烯)、三苯(苯、甲苯、二甲苯)的总产量可分别提高9.28万t/a,13.57万t/a,其工程投资开始盈余年份可分别提前0.29 a,1.47 a。2个改进流程中新抽提流程的技术经济指标较佳。
The conventional processes of 3 sets of units of ethylene,gasoline hydrogenation and aromatics extraction in a 70×104t/a ethylene complex were analyzed,then 2 new improvement processes were put forward under the condition of without adding new process units and more ethylene cracking feedstock consumption.Both the new gasoline hydrogenation process and the new extraction process were front-end.And the comparison of technology and economy between the conventional and new processes was done in detail.The resu...
出处
《石化技术与应用》
CAS
2008年第1期55-60,共6页
Petrochemical Technology & Application
关键词
乙烯联合装置
前置加氢流程
前置抽提流程
技术经济分析
ethylene complex
front-end hydrogenation process
front-end aromatics extraction process
analysis of technology and economy
