反应萃取法分离热解油中酚类物质  

Separation of Phenolic Substances from Pyrolysis Oil Using Reactive Extraction Method

作　　者：罗丹 郭丽潇[1] 张宇航 曹健 郝全爱 高亚华 高志婷 李娇 Luo Dan;Guo Lixiao;Zhang Yuhang;Cao Jian;Hao Quanai;Gao Yahua;Gao Zhiting;Li Jiao(China Institute for Radiation Protection,Taiyuan 030000,China;Huaneng Shandong Shidao Bay Nuclear Power Co.,Ltd.,Rongcheng 264300,China)

机构地区：[1]中国辐射防护研究院,山西太原030000 [2]华能山东石岛湾核电有限公司,山东荣成264300

出　　处：《广东化工》2024年第12期35-37,27,共4页Guangdong Chemical Industry

摘　　要：本研究采用三辛基氧化膦/环己烷对热解油馏分中的酚类物质进行了萃取,考察了三辛基氧化膦用量、环己烷用量、萃取温度、萃取时间等不同条件对酚类物质萃取效率的影响。结果表明最佳萃取条件为:三辛基氧化膦与热解油馏分中酚类的摩尔比为2.5、萃取相中三辛基氧化膦的质量分数为10%、萃取温度为23℃、萃取时间为10 min。在此条件下,可获得愈创木酚、2-甲氧基-4-甲基苯酚、苯酚、间甲酚和4-乙基苯酚的萃取效率分别为65%、75%、84%、83%和90%。上述结果说明基于三辛基氧化膦的反应萃取法对热解油馏分中的酚类物质有较好的分离效果。In this study,trioctyl phosphine oxide(TOPO)/cyclohexane was used to extract the phenols from a pyrolysis oil distillate boiling at 140~250℃through atmospheric distillation.In order to optimize the separation of phenols,the effects of TOPO dosage,cyclohexane dosage,extraction temperature and extraction time on the extraction equilibrium were investigated.The results showed that the optimized extraction conditions were the molar ratio of TOPO to phenols 2.5,the mass fractions of TOPO in extract phase 10%,extraction temperature 23℃,extraction time 10 min.Under the conditions,the extraction efficiencies of guaiacol,2-methoxy-4-methyl phenol,phenol,m-cresol and 4-ethyl phenol were 65%,75%,84%,83%and 90%,respectively.This indicated that the reaction extraction method based on TOPO had a good separation effect on phenols in pyrolysis oil fractions.

关 键 词：三辛基氧化膦 热解油 酚类 

分 类 号：TQ[化学工程]