Span-60乳化剂用于流化催化裂化柴油氧化脱硫  

Oxidative Desulfurization of Fluid Catalytic Cracking Diesel Using Span-60 as Emulsifier

作　　者：王亮[1] 李春虎[1] 侯影飞[1] 刘帅[1] 于英民[1] 冯丽娟[1] 

机构地区：[1]中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室,山东青岛266100

出　　处：《石油化工》2009年第6期682-685,共4页Petrochemical Technology

基　　金：国家自然科学基金项目(20676128);青岛市科技局计划项目(05-2-JC-56)

摘　　要：以Span-60为乳化剂、双氧水为氧化剂、固载磷钨酸的半焦为催化剂,对流化催化裂化(FCC)柴油进行氧化脱硫;考察了反应时间、反应温度、Span-60乳化剂用量和双氧水用量对脱硫率的影响。实验结果表明,FCC柴油氧化脱硫的优化反应条件为:反应时间60m in、反应温度60℃、Span-60乳化剂用量(基于FCC柴油的质量分数)0.6%、双氧水用量(基于FCC柴油的质量分数)2%、催化剂用量(基于FCC柴油的质量分数)1.2%。在此条件下对FCC柴油进行氧化脱硫,FCC柴油中的硫含量由1 400μg/g降至84μg/g,脱硫率达94%。气相色谱分析结果显示,氧化脱硫后FCC柴油中的苯并噻吩衍生物、二苯并噻吩及其衍生物基本上被脱除。Oxidative desulfurization of fluid catalytic cracking （FCC） diesel was investigated by using Span-60 as emulsifier, hydrogen peroxide as oxidant and phosphotungstic acid/semi-coke as catalyst. Effects of reaction time, reaction temperature, emulsifier dosage and oxidant dosage on desulfurization rate were studied. Under optimal reaction conditions： reaction time 60 min, reaction temperature 60℃, mass fraction of Span-60 emulsifier 0.6% （based on FCC diesel） ,mass fraction of oxidant 2% （based on FCC diesel） and mass fraction of catalyst 1.2% （based on FCC diesel）, sulfur content in FCC diesel could be lowered from 1 400μg/g down to 84μg/g with desulfurization rate of 94%. According to analysis of FCC diesel by GC before and after oxidation and desulfurization, the removals of benzothiophene derivatives, dibenzothiophene and derivatives were almost complete.

关 键 词：流化催化裂化柴油 氧化脱硫 乳化剂 萃取 

分 类 号：TE626.24[石油与天然气工程—油气加工工程] TQ340.472[化学工程—化纤工业]