煤基石脑油萃取脱芳制备溶剂油工艺研究  

Study on the Liquid-liquid Extraction Aromatic Process for the Coal-derived Naphtha to Produce Solvent Oil

作　　者：张琳娜[1,2] 李冬[1,2] 朱永红[1,2] 薛凤凤[1,2] 袁扬[1,2] 王磊[1,2] 

机构地区：[1]西北大学化工学院,陕西西安710069 [2]陕西省资源化工应用工程技术研究中心,陕西西安710069

出　　处：《精细化工》2016年第6期703-708,共6页Fine Chemicals

基　　金：国家自然科学基金青年基金(21206136);陕西省科技统筹创新工程计划项目(2014KTCL01-09);教育部博士点新教师基金(20126101120013);陕西省教育厅产业化培育项目(14JF026;15JF031);陕西省青年科技新星项目;西北大学"优秀青年学术骨干支持计划"~~

摘　　要：以中低温煤焦油加氢生成的石脑油(煤基石脑油)为原料,在萃取温度40℃、萃取剂和原料体积比(剂油比)1.5∶1、萃取时间5 min、分相时间20 min的工艺条件下,探究不同萃取剂对液-液萃取脱芳效果的影响,其中复合萃取剂V(二甲基亚砜,DMSO)∶V(N,N-二甲基甲酰胺,DMF)=9∶1时脱芳效果较好,然后选择此萃取剂研究各工艺过程参数对脱芳效果的影响。通过单因素考察和响应面分析得到液-液萃取脱芳的最优工艺条件为:萃取温度为44.48℃,单级剂油比为1.69∶1,萃取时间为5.30 min,分相时间为10 min,在此工艺条件下,经5级错流萃取,原料的芳烃脱除率可达(89.51±0.03)%,溶剂油收率为(73.33±0.03)%。Effects of various extractants on removal of aromatics of naphtha derived from the hydrogenation fraction of low temperature coal tar（ coal-derived naphtha） were investigated under the conditions（ extraction temperature 40 ℃,volume ratio of the extraction agent and raw material（ solvent to oil ratio） 1. 5 ∶ 1,extraction time 5 min,phase separation time 20 min）. The results showed that a better aromatics removal rate was achieved when the mix solvent of dimethyl suifoxide and N,Ndimethyformamid 〔V（ DMSO） ∶ V（ DMF） = 9∶1〕was used as an extratant. Then the composite extratant was used to investigate the effects of process conditions on liquid-liquid extraction aromatic by singlefactor tests and response surface methodology. The optimized process conditions were that extraction temperature was 44. 48 ℃,extraction time was 5. 30 min,single stage extractant oil volume ratio was1. 69∶1 and phase separation time was 10 min After five stages counter-current extraction under above process conditions the aromatics removal rate was（ 89. 51 ± 0. 03） % and the yield of solvent oil was（ 73. 33 ± 0. 03） % 。

关 键 词：煤基石脑油 液-液萃取 复合萃取剂 响应面分析法 溶剂油 油田化学品与油品添加剂 

分 类 号：TE624.5[石油与天然气工程—油气加工工程]