渣油超临界萃取窄馏分的催化裂化反应  

Catalytic Cracking of Residua Super-Critical Fluid Extraction Fractions

作　　者：孙学文[1] 裴晓光 赵莹 李平[2] 曾海[2] 黄鹤[2] 

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京 [2]中国石油天然气股份有限公司辽河石化公司,辽宁盘锦

出　　处：《化学工程与技术》2018年第2期83-92,共10页Hans Journal of Chemical Engineering and Technology

摘　　要：本文以正戊烷为溶剂,采用超临界萃取装置分别将辽河减渣及委内瑞拉常渣切割成13个及15个窄馏分并对窄馏分性质进行了测定,在小型固定流化床装置上考察了不同窄馏分的催化裂化性能。研究结果表明,随着窄馏分变重,焦炭产率增加,汽油及柴油收率降低。焦炭产率除了与CCR值有关外,还与原料的芳碳率fa及芳香环系缩合度参数HAU/CA有关。焦炭产率与CCR比值与原料CCR、芳碳率及HAU/CA之间遵循指数变化关系。同时提出了依据原料四组分预测催化裂化产率的关联式。Liaohe vacuum residue (Liaohe VR) and Venezuela Orinoco atmospheric residue (Orinoco AR) were separated into 13 and 15 narrow subfractions respectively using supercritical fluid extrac-tion fractionation (SFEF) with n-pentane as solvent, and the properties of subfractions were cha-racterized. The catalytic cracking reactions of different SFEF subfractions were conducted in a fixed fluidized bed reactor system. The results showed that coke yield increased as the SFEF sub-fraction became heavier, and the yields of naphtha and diesel decreased. Except Concarbon resi-due (CCR) of feed, the coke yields were affected by aromatic carbon rate (fa) and the parameter of aromatic ring condensation (HAU/CA). The coke yield was inverse exponentially correlated with the CCR content, fa and HAU/CA. A catalytic cracking product yield model was derived based on saturates/aromatics/resins/asphaltenes (SARA) contents of SFEF subtraction to determine the maximum resins content of feedstock for catalytic cracking process.

关 键 词：辽河减渣 委内瑞拉常渣 窄馏分 催化裂化 

分 类 号：TE6[石油与天然气工程—油气加工工程]