摘要
利用提升管催化裂解实验装置研究了加拿大合成原油瓦斯油HGO和LGO的催化裂解反应规律和裂解产品性质。发现总低碳烯烃(乙烯、丙烯和丁烯)产率随反应温度和剂油比的增大存在最大值,随反应时间的延长而减小,随水油比的增大而升高。实验确定了HGO催化裂解的优化反应条件:反应温度620～640℃、剂油比16、反应时间2s、水油比0.5左右。在此反应条件下,乙烯、丙烯和总低碳烯烃产率分别可达9.0%(质量),15.8%(质量)和32.6%(质量)。催化裂解汽油馏分、柴油馏分和重油馏分含有大量的芳香烃,其中催化裂解汽油馏分总芳香烃含量在80%(质量)以上,主要是甲苯和C8芳香烃;催化裂解柴油馏分总芳香烃含量在60%(质量)以上,主要是单环和双环芳香烃;催化裂解重油馏分总芳香烃含量在70%(质量)以上,主要是多环芳香烃。
Reaction performance and product properties of catalytic pyrolysis of HGO（heavy gas oil）and LGO（light gas oil）derived from Canadian synthetic crude oil were investigated in a riser unit.The yield of total light olefins（ethylene,propylene,and butylene）showed a maximum with increasing reaction temperature and catalyst-to-oil mass ratio,decreased with increasing reaction time,and enhanced with increasing steam-to-oil mass ratio.The optimal reaction temperature,catalyst-to-oil mass ratio,reaction time and steam-to-oil mass ratio of catalytic pyrolysis of HGO were 620—640℃,16,2 s and 0.5,respectively.Under these optimal reaction conditions,the yields of ethylene,propylene and total light olefins reached 9.0%（mass）,15.8%（mass）and 32.6%（mass）,respectively.There were large amounts of aromatics in pyrolysis gasoline,diesel and heavy oil fractions.Gasoline fraction contained above 80%（mass）of aromatics which were mainly toluene and C8 aromatics.Diesel fraction contained above 60%（mass）of aromatics which were mainly single-ring and double-ring aromatics.Heavy oil fraction contained above 70%（mass）of aromatics which were mainly multi-ring aromatics.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2010年第9期2365-2372,共8页
CIESC Journal
基金
教育部科学技术研究重大项目(307008)
关键词
催化裂解
瓦斯油
低碳烯烃
产品性质
catalytic pyrolysis
gas oil
light olefin
product property
