樊文俊,陈鹏举,冯杰,李文英
FAN Wenjun,CHEN Pengju,FENG Jie,LI Wenying

• 1:太原理工大学山西省煤科学与技术-省部共建国家重点实验室培育基地

摘要(Abstract)：

为获得煤直接液化油品中典型组分的分离方法并实现工艺过程的优化,选用含酚、芳烃、环烷烃化合物典型组分的褐煤直接液化油180~200℃馏分为研究对象,利用筛选后的三甘醇、环丁砜2种萃取剂进行液化油组分的萃取精馏。根据所得试验数据在Aspen Plus中构建了萃取精馏-萃取两步分离工艺。结果表明,利用本方法可以分离得到纯度(质量分数)为79.94%芳烃、81.15%烷烃、95.75%粗酚,油品的收率为99.23%。能耗分析表明:脱酚工艺耗能最多,占总能耗的68.66%;预精馏工艺通过选择分离54.82%的原料可节能70.53%,产品单位能耗降低了46.67%。通过简化工艺可大幅减少萃取剂吸热能耗,进而降低分离过程的能耗。
In order to explore the method of direct coal liquefaction( DCL) oil fraction separation and to optimize the separation system to fit the whole liquefaction system.The 180-200 ℃ fraction of DCL,which contained the typical components of phenol,aromatic and cycloalkanes compounds,were chosen as the liquid-phase separation target. By using the triethylene glycol and sulfolane as the extractants solvents,DCL fraction were studied and thermodynamic data was used to build a separation system that included the extractive distillation unit following with extraction unit.The results show that the simulation of combined separation system can archive the purity of aromatic compounds 79.94%,paraffin 81.15% and crude phenol 95.75% respectively,the yield of crude oil recovery is 99.23%.The analysis of energy consumption indicate that the phenol removal process contributes to the most 68.66% of the total energy consumption.The modified separation process can save 70.53% of energy consumption through minimizing the amounts of extractant solvents,and the unit product energy consumption decreases 46.67%.

关键词(KeyWords)： 煤直接液化油;分离;萃取精馏;萃取剂;萃取
direct coal liquefaction oil;separation;extractive distillation;extractant;exact

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点资助项目(U1610221)

作者(Author): 樊文俊,陈鹏举,冯杰,李文英
FAN Wenjun,CHEN Pengju,FENG Jie,LI Wenying

DOI: 10.13226/j.issn.1006-6772.2018.01.017

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