基于超临界流体萃取的悬浮床加氢尾油的分离与评价  

SEPARATION AND EVALUATION OF SLURRY-BED HYDROCRACKING BOTTOM OIL BASED ON SFEF

作　　者：许延[1,2] 徐伟池[1] 许志明[1] 赵锁奇[1] 徐春明[1] 

机构地区：[1]中国石油大学重质油国家重点实验室,北京102249 [2]中国石油石化研究院,北京100083

出　　处：《石油学报（石油加工）》2008年第5期563-568,共6页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展计划“973”项目(2004CB217801)资助

摘　　要：用超临界流体萃取分馏(SFEF)装置将克拉玛依渣油悬浮床加氢尾油(KMHR)分离为8个窄馏分和萃余残渣。测定并计算了馏出油的残炭及杂质脱除率,考察了窄馏分SARA族组成、残炭、密度、硫、氮、金属及平均结构参数等的递变规律,预测了窄馏分的裂化性能,并用XRD表征了甲苯不溶物的存在形态。结果表明,超临界流体萃取可以脱除尾油中全部沥青质及甲苯不溶物,质量分数99.5%以上的金属和70.4%以上的残炭富集到萃余残渣中。馏出油符合催化裂化或加氢裂化进料要求并具有优良的裂化性能。The slurry-bed hydrocracking bottom oil from Karamay atmospheric residue （KMHR） was separated into 8 narrow fractions and an end-cut by supercritical fluid extraction and fractionation （SFEF） technology. The removel rate of CCR and impurities were determined and calculated. The change rules of SARA group composition, CCR, density, sulphur, nitrogen, metals and average structural parameters were summarized. The cracking properties of SFEF narrow fractions were forecasted and the characterization for toluene insoluble from SFEF raffinate was analyzed by XRD. The results indicated that more than 99.5% metals, 70.4% CCR, all the asphaltene and toluene insoluble of KMHR were concentrated in the end-cut. Draw-out oil is finer feedstock for FCC or hydrocracking.

关 键 词：悬浮床加氢 超临界流体萃取分馏 甲苯不溶物 脱除率 

分 类 号：TE622.9[石油与天然气工程—油气加工工程]