连续式FCC汽油萃取-光催化氧化深度脱硫  

CONTINUOUS DEEP DESULFURIZATION TECHNOLOGY BY EXTRACTION-PHOTOCATALYSIS-OXIDATION FOR FCC GASOLINE

作　　者：王磊[1,2] 沈本贤[1] 蔡海军[3] 

机构地区：[1]华东理工大学,上海200237 [2]上海应用技术学院,上海200235 [3]中国石油乌鲁木齐石化炼油厂,新疆乌鲁木齐830019

出　　处：《石油学报（石油加工）》2008年第5期569-574,共6页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：采用连续式萃取-光催化深度脱硫工艺对FCC汽油进行精制,采用硫氮荧光分析仪和GC-PFPD测定精制油中硫含量,考察了萃取条件和光催化反应条件对其脱硫效果的影响。从实验结果得到,萃取操作的适宜条件为常压、萃取温度30℃、溶剂/油质量比为1～1.2;光催化反应操作的适宜条件为反应温度30～40℃、反应时间1h、氧化剂用量3%(质量分数)。在上述操作条件下,FCC汽油精制油中硫质量分数为40.5μg/g,达到欧Ⅳ标准,精制油收率超过95%,且精制前后油品的物性基本没有变化。By using continuous extraction-photocatalysis-oxidation desulfurization process, the removal of sulfur-containing compounds from FCC gasoline was carried out. The sulfur contents in FCC gasoline before and after desulfurization were determined by means of Atnek analyzer and GC-PFPD. The effects of extraction and photocatalysis-oxidation conditions on the removal of sulfur-containing compounds from FCC gasoline were investigated. The experiment results showed that the suitable operation conditions of extraction process included normal atmosphere, temperature of 30℃ and mass ratio of solvent to oil in the range of 1-1.2; suitable reaction conditions included temperature of 30-40℃, resident time of 1 h, mass fraction of oxidant of 3 %. Under those conditions, the mass fraction of sulfur in refining oil reduced to 40. 5 μg/g, which meets Europe Ⅳ standard, and the refining oil yield was above 95%. The physico-chemical properties of the refining oil were the same as that before desulfurization.

关 键 词：连续工艺 萃取 光催化氧化 脱硫 

分 类 号：TE626.24[石油与天然气工程—油气加工工程]