催化重汽油作原料增产芳烃加工路线的可行性  

Processing route feasibility of catalytic heavy gasoline as feedstock to increase aromatics

作　　者：代恩东 高伟 刘亭亭 毛玲娟 夏凌海 李伟龙 DAI En-dong;GAO Wei;LIU Ting-ting;MAO Ling-juan;XIA Ling-hai;LI Wei-long(Zhejiang Petroleum&Chemical Co Ltd,Zhoushan 316200,China;School of Engineering,Zhejiang University,Hangzhou 310000,China;Zhejiang Provincial Innovation Center of Green Petrochemical Technology,Ningbo 315000,China;Energy,Power and Mechanical Engineering College,North China Electric Power University,Beijing 102208,China;Yellow River Delta JingboChemical Research Institute Co Ltd,Binzhou 256603,China)

机构地区：[1]浙江石油化工有限公司,浙江舟山316000 [2]浙江大学工程师学院,浙江杭州310000 [3]浙江省绿色石化技术创新中心,浙江宁波315048 [4]华北电力大学能源动力与机械工程学院,北京102208 [5]黄河三角洲京博化工研究院有限公司,山东滨州256603

出　　处：《石化技术与应用》2024年第6期455-459,共5页Petrochemical Technology & Application

基　　金：浙江石油化工有限公司科学研究与技术开发项目(ZSH-RD-23-025,ZSH-RD-23-027)。

摘　　要：为了实现减油增化、提高化工产品的附加值,浙江石油化工有限公司利用Petro-SIM流程模拟软件对40 Mt/a炼化一体化项目的催化裂化(FCC)装置、加氢预处理装置、加氢脱硫装置、加氢精制装置、连续催化重整(CCR)装置、芳烃联合装置的工艺生产路线进行了联合模拟与优化,提出了催化重汽油作原料增产芳烃的优化加工路线,并验证了其可行性。结果表明:首先调整FCC装置分馏塔操作参数,以控制催化汽油馏分的终馏点不超过175℃,接着经过加氢预处理装置分馏塔的处理之后,将85~175℃馏分的催化重汽油送入重石脑油加氢预处理装置加工,所得精制重石脑油进入CCR装置,最后C≥6重整生成油进入芳烃联合装置便可生产苯、对二甲苯(PX);当重石脑油加氢预处理装置掺炼质量分数13%的催化重汽油后,精制重石脑油芳潜质量分数提高了6.7个百分点,C≥6重整生成油的链烷烃质量分数下降了1.1个百分点,而其芳烃质量分数提高了1.2个百分点;采用上述优化加工路线后,共加工催化重汽油19.64万t/a,增产的苯、PX分别为2.86,9.45万t/a。In order to reduce the gasoline product and increase the added value of chemical products,the Petro-SIM process simulation software was used to jointly simulate and optimize the processing routes of fluid catalytic cracking(FCC)unit,hydro-pretreating unit,hydro-desulfurizating unit,hydro-refining unit,continuous catalytic reforming(CCR)unit,and aromatics complex unit of 40 Mt/a refining and integration project of Zhejiang Petroleum&Chemical Co Ltd.Then an optimal processing route for increasing aromatics by using catalytic heavy gasoline as feedstock was proposed,and its feasibility was verified.The results showed that:firstly,the fractionating column operating parameters of FCC unit were adjusted to control the final distillation point of the catalytic gasoline fraction not exceeding 175℃,then after being treated by the distillating column of the hydro-pretreatment unit,the catalytic heavy gasoline of 85-175℃was sent to the heavy naphtha hydro-pretreating unit for processing,and then successively the refined heavy naphtha was obtained and sent into CCR unit,finally,the C≥6 reforming oil was sent to the aromatics complex unit to produce benzene and xylene(PX).When the blending mass fraction of the catalytic heavy gasoline at 13%in the heavy naphtha hydro-pretreating unit,the potential aromatic mass fraction of refined heavy naphtha increased by 6.7 percentage points,meanwhile,the mass fraction of alkanes in the C≥6 reforming oil decreased by 1.1 percentage points,and yet the mass fraction of corresponding aromatics increased by 1.2 percentage points.After carrying out the above optimal processing route,a total of 196.4 kt/a catalytic heavy gasoline was processed,and the increase of benzene and PX was 28.6,94.5 kt/a,respectively.

关 键 词：催化裂化 加氢处理 连续催化重整 催化重汽油 重石脑油 模拟与优化 芳烃 

分 类 号：TE624.4[石油与天然气工程—油气加工工程]