摘要
对比分析国内石蜡基、中间基和环烷基焦化蜡油(CGO)元素组成和族组成特性,风城CGO具有低硫、高氮、低氢碳比,多环芳烃和胶质含量高的特点,裂化性能差,不适合直接作为FCC原料。工业数据表明:随着风城CGO掺炼比增大,原料中饱和烃含量下降、芳烃含量上升,干气和焦炭收率增加,液化石油气与汽油收率降低,汽油研究法辛烷值降低,柴油收率增加、十六烷值下降,总液体收率和转化率降低。掺炼比一定时,提高反应温度,干气、焦炭和液化石油气收率增加,汽油收率先增加后降低,柴油收率降低,转化率提高11.22百分点;增大剂油比,产品分布变化与提高反应温度一致,但转化率仅增加5.73百分点,表明工业生产中反应温度对提高多环芳烃转化率和目的产品收率效果更为显著。LZR-30催化剂活性与稀土氧化物含量高于MAC,抗碱氮和金属污染能力强,有利于风城CGO大比例掺炼。
By comparison and analysis of the elemental composition and hydrocarbon types of paraffinic,intermediate and naphthenic CGO,Fengcheng CGO has the characteristics of low sulfur,high nitrogen,low hydrogen-carbon ratio,high PAHs and resin content,poor catalytic cracking performance,which is not suitable for being directly adopted as FCC feedstocks.Industrial data shows that as the blending ratio of Fengcheng CGO increases,saturate content decreases and aromatic content increases in feedstocks,the yield of dry gas and coke increases,the yield of LPG and gasoline decreases;diesel yield increases,total liquid yield and conversion decrease.Meanwhile,gasoline RON and diesel CN decrease.When the blending ratio of CGO is constant,the reaction temperature is increased,the yield of dry gas,coke and LPG increases,the yield of gasoline increases first and then decreases,the yield of diesel oil decreases,and the conversion rate increases by 11.22 percentage points.With increasing the catalyst to oil ratio,the product distribution charges are consistent with increasing the reaction temperature,but conversion rate only increases by 5.73 percentage points,indicating that reaction temperature has a more significant effect on improving conversion rate of PAHs and the yield of target product in industrial production.LZR-30 catalyst has higher activity and rare earth oxide content than MAC,and has stronger resistance to alkali nitrogen and metal pollution,which is conducive to large scale blending of Fengcheng CGO.
作者
彭威
曹玉骁
刘艳升
黄扶显
宋明超
Peng Wei;Cao Yuxiao;Liu Yansheng;Huang Fuxian;Song Mingchao(State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249;PetroChina Karamay Petrochemical Co.,Ltd.,Karamay,Xinjiang 834000)
出处
《炼油技术与工程》
CAS
2020年第1期13-18,共6页
Petroleum Refinery Engineering
基金
中国石油大学(北京)克拉玛依校区科研基金(RCY2016B-02-001).
关键词
超稠油
CGO
FCC
掺炼比
烃组成
剂油比
super-heavy crude oil
CGO
FCC
blending ratio
hydrocarbon types
catalyst to oil ratio
