加氢中质油-减压渣油共焦化提高液收技术研究  

Research on hydrotreated medium oil-vacuum residue co-coking technology for improving liquid recovery

作　　者：田娟 TIAN Juan(Hunan Changlian New Material Technology Co.,Ltd.,Yueyang Hunan 414012,China)

机构地区：[1]湖南长炼新材料科技股份公司,湖南岳阳414012

出　　处：《石油化工应用》2024年第6期112-116,共5页Petrochemical Industry Application

摘　　要：延迟焦化是炼油厂重油轻质化的重要手段,该工艺成熟,投资低,产品柴汽比高,具有较好的经济效益。针对延迟焦化装置存在的焦炭产率高、液体产品收率低的问题,开展了加氢中质油作供氢剂,与减压渣油共焦化降低焦炭产率、提高炼油厂液收的研究。实验结果表明,加氢中质油与减压渣油共焦化能明显提高焦化反应的产品液收,改善液体产品品质,降低焦炭产率。在常压、反应温度500℃和反应时间120 min条件下,掺炼5%的加氢中质油(氢耗1.82%),焦炭产率降低2.78%,液收增加3.69%,其中,产物中干气和汽油收率分别降低1.37%和1.82%,柴油和蜡油收率分别增加0.13%和5.39%。Delayed coking process is an important means of refining heavy oil to light weight in refineries.This process is mature,has low investment,high diesel to gasoline ratio,and has good economic benefits.In response to the problems of high coke yield and low liquid product yield in delayed coking units,research has been conducted on using hydrotreated medium oil as a hydrogen supply agent in refining and co-coking with vacuum residue to reduce coke yield and improve refinery liquid recovery.The experimental results show that co-coking of hydrotreated medium oil and vacuum residue can significantly improve the liquid recovery of coking reaction products,improve the quality of liquid products,and reduce coke yield.Under the conditions of atmospheric pressure,reaction temperature of 500℃,and reaction time of 120 min,blending 5%hydrotreated medium oil(hydrogen consumption of 1.82%)in vacuum residue resulted in a decrease of 2.78%in coke yield and an increase of 3.69%in liquid yield,of which the yield of dry gas and gasoline in the product decreased by 1.37%and 1.82%,respectively,while the yield of diesel oil and heavy oil respectively increased by 0.13%and 5.39%.

关 键 词：延迟焦化 石油焦 液收 加氢中质油 

分 类 号：TE624.3[石油与天然气工程—油气加工工程]