费-托合成蜡分质分级-萃取精制工艺研究  

STUDY OF PROCESSING FISCHER-TROPSCH WAXES BY VACUUM DISTILLATION AND EXTRACTION REFINING

作　　者：刘东阳 石薇薇[1] 曹祖宾[1] 韩冬云[1] 曹传洋 Liu Dongyang;Shi Weiwei;Cao Zubin;Han Dongyun;Cao Chuanyang(College of Chemistry,Chemical Engineering and Environmental Engineering,Liaoning Shihua University,Fushun,Liaoning 113001;PetroChina Fushun Petrochemical Company No.2 Refinery)

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001 [2]中国石油抚顺石化公司石油二厂

出　　处：《石油炼制与化工》2019年第1期69-72,共4页Petroleum Processing and Petrochemicals

基　　金：辽宁省教育厅基本科研项目(L2017LQN013)

摘　　要：以内蒙古伊泰费-托合成蜡为原料,采用减压蒸馏与溶剂萃取相结合的工艺技术脱除费-托合成蜡中的异构烃类和含氧化合物以降低其油含量。考察了不同萃取剂、操作条件对脱油效果的影响,采用傅里叶红外光谱(FT-IR)和高温气相色谱对蜡样品进行分析。结果表明:选用N-甲基吡咯烷酮为溶剂,在萃取温度为120℃、剂油质量比为2.0的操作条件下,萃取效果最佳,精制蜡收率和含油率分别为93.75%和0.097%,精制蜡滴点为112℃,针入度为0.1mm,产品满足Sasol公司H105费-托合成蜡产品质量标准。精制费-托蜡的碳数分布在C_(19)～C_(120)之间,FT-IR表征结果表明其结构简单,主要由长链正构烷烃组成,C_(35)的含量最高。This paper introduced a method of refining Inner Mongolia Itai Fischer-Tropsch waxes to reduce oil content.The method removed iso-hydrocarbons and oxygenate by combining process of vacuum distillation and solvent extraction.The effects of the extraction agent,the conditions of extraction on the removal efficiency were investigated.The Fourier transform infrared spectroscopy(FT-IR)and high temperature gas chromatography simulated distillation were applied to analyze the Fischer-Tropsch waxes.The results showed that the yield of Fischer-Tropsch waxes and oil content can reach 93.75% and 0.097%,respectively by using N-methyl pyrrolidone as solvent,extraction temperature of 120℃,catalyst oil mass ratio of 2.At this point,the refined wax has a melting point of 112℃and a penetration of0.1mm.The product satisfies the quality standard of H105Fischer-Tropsch wax produced by Sasol.The carbon number of refined F-T waxes is distributed between C19 and C120,and FT-IR characterization showed that it is simple in structure,mainly composed of long chain n-alkanes,among which the content of C35 is the highest.

关 键 词：费-托合成蜡 异构烃类 含氧化合物 萃取精制 

分 类 号：TQ529.2[化学工程—煤化学工程]