煤焦油加氢脱硫工艺研究  

A study on hydrodesulfurization process of coal tar

作　　者：李冬[1] 李稳宏[1] 高新[1] 崔楼伟[1] 杨小彦[1] 赵鹏[1] 

机构地区：[1]西北大学化工学院,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2010年第3期447-450,共4页Journal of Northwest University（Natural Science Edition）

基　　金：陕西省"1311"科技创新工程基金资助项目(2008ZDKG-50);西北大学科学研究基金资助项目(09NW06);西北大学研究生自主创新基金资助项目(09YZZ50);榆林市科技计划基金资助项目

摘　　要：目的研究煤焦油加氢脱硫工艺过程的优化工艺条件。方法在小型固定床加氢装置上,通过单因素实验、Box-Benhnken实验设计优化工艺条件。结果得到了煤焦油加氢脱硫的优化工艺条件为:反应温度681.25K,反应压力13.10MPa,液体体积空速0.32h-1,氢油体积比1200∶1,产品硫含量为12～20μg/g。结论煤焦油的硫含量较低,要达到较好的加氢脱硫效果必须在高温、高压和低空速下进行,该工艺对煤焦油加氢改质的深入研究提供了一定的理论基础和参考。Aim To study the optimum hydrodesulfurization processing conditions of coal tar. Methods The process was carried out in fixed-bed hydrogenation unit. The single-factor tests and Box-Benhnken experimental design were employed to determine the optimum technological condition. Results The optimum process conditions were found as follows：reaction pressure of 13. 10MPa,reaction temperature of 681. 25K,hydrogen to oil volume ratio of 1 200∶ 1 and LHSV（ liquid hourly space velocity） of 0. 32 h -1,under which the sulfur content of products was 12 ～ 20 μg/g. Conclusion Although the sulfur mass fraction of coal tar was low,in order to get high desulfu-rization rate,the hydrodesulfurization reaction must be carried out at high temperature,high pressure and low LHSV. These findings provided some valuable information for the further researches in coal tar hydro-upgrading process.

关 键 词：煤焦油 加氢脱硫 Box-Benhnken实验设计 

分 类 号：TE624.4[石油与天然气工程—油气加工工程]