摘要
基于脱硫工艺原理,分析了催化汽油M-DSO(芳构化-选择性加氢脱硫)与溶剂抽提脱硫联合工艺的实际应用情况,并提出了联合工艺优化方案。结果表明:M-DSO单元加氢改质重汽油经加氢脱硫(HDS)后,脱硫率达97.7%,研究法辛烷值(RON)损失2.3个单位;溶剂抽提脱硫单元抽余油含硫量为4.5μg/g,脱硫率达91.9%;联合工艺优化方案即将催化汽油切割成轻、中、重汽油馏分,轻汽油直接作为汽油调和组分;中汽油先经溶剂抽提脱硫再经加氢改质处理,在脱硫、降烯烃的同时尽量保留辛烷值;少量重汽油直接进行HDS处理,避免了因部分含硫有机化合物加氢改质后导致HDS难度的增加。
Based on the principle of desulfuriza- tion process, the practical application of combined M -DSO and solvent extraction desulfurization processes for catalytic gasoline was analyzed and the optimum scheme of combined process was proposed. The results showed that the M - DSO unit was pro- cessed by hydroupgrading and hydrodesulfurization （HDS）, the desulfurization rate reached 97.7%, the loss of research octane number （RON） was 2.3 units; sulfur content of raffinate oil in solvent ex- traction desulfurization unit was 4.5 μg/g, and the desulfurization rate reached 91.9%. The optimum scheme of combined process was that the catalytic gasoline was cut into light, middle and heavy distil- lation, and the light gasoline was directly used as gasoline blending component; the middle gasoline was treated by the solvent extraction desulfurization process and then hydroupgrading, and retained most of RON while desulfurization and olefin reduction; a small amount of heavy gasoline was directly treated by HDS, avoiding the hydroupgraded sulfur - con- taining compounds leading to the difficulty of HDS.
作者
杨乾坚
潘登
张妮娜
YANG Qian-jian;PAN Deng;ZHANG Ni-na(Refining ＆ Chemical Plant of Yumen Oilfield Company,PetroChina,Yumen 735200,China)
出处
《石化技术与应用》
CAS
2018年第5期343-346,共4页
Petrochemical Technology & Application
关键词
催化汽油
溶剂抽提脱硫
加氢脱硫
芳构化
醚化
加氢改质
烯烃
辛烷值
catalytic gasoline
solvent extractiondesu]furization
hydrodesulfurization
aromatization
etherification
hydroupgrading
o]efin
octane num-ber
