萃取剂性质对煤液化油渣萃取性能的影响  

Effect of the Extractant Properties on Extraction Performance of Coal Liquefied Oil Residue

作　　者：刘洋[1,2] 黄剑波[1,2] 闫国春 王建立[3] 卢卫民[3] 李艺[3] 闫伦靖[1,2] 廖俊杰 鲍卫仁[1,2] 王建成[1,2] LIU Yang;HUANG Jianbo;YAN Guochun;WANG Jianli;LU Weimin;LI Yi;YAN Lunjing;LIAO Junjie;BAO Weiren;WANG Jiancheng(State Key Laboratory of Clean and Efficient Coal Utilization,Taiyuan University of Technology,Taiyuan 030024,China;Key Laboratory of Coal Science and Technology,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China;China Shenhua Coal to Liquid and Chemical Co.,Ltd.,Beijing 100011,China)

机构地区：[1]太原理工大学省部共建煤基能源清洁高效利用国家重点实验室,太原030024 [2]太原理工大学煤科学与技术教育部和山西省重点实验室,太原030024 [3]中国神华煤制油化工有限公司,北京100011

出　　处：《太原理工大学学报》2023年第3期418-424,共7页Journal of Taiyuan University of Technology

基　　金：国家能源集团2030先导项目(GJNY2030XDXM-19-17);国家自然科学基金资助项目(22078224);山西省基础研究计划面上项目(20210302123193)。

摘　　要：针对煤液化油渣如何高效萃取的问题,选择脂肪烃、芳烃、含氧化合物和模拟焦化苯等不同性质的萃取剂对煤液化油渣进行萃取,考察了萃取剂的溶解度参数和极性参数对煤液化油渣萃取物收率和萃取物组成的影响。结果表明:随着萃取剂溶解度和极性参数的增加,萃取物收率呈先增大后减小的趋势,萃取剂溶解度参数对煤液化油渣萃取效果的影响主要体现在其与可萃取组分溶解度参数的匹配上,萃取剂极性参数对萃取效果的影响主要体现在其对煤液化油渣缔合结构的破坏作用。当萃取剂和萃取物的溶解度参数相近时,具有较好的萃取效果,并且它们的萃取物以多环芳烃为主。而极性参数较大的萃取剂更易破坏煤液化油渣的缔合结构,进而导致丙酮、乙醇和甲醇萃取物的N和S元素含量较高。模拟焦化苯是一种萃取煤液化油渣的良好溶剂,对煤液化油渣的萃取物收率可达50%以上。To solve the problem of efficient extraction of coal liquefied oil residue,the extractants with different properties,such as aliphatic hydrocarbon,aromatic hydrocarbon,oxygen-containing compounds,and simulated coking benzene,were selected for the extraction of coal liquefied oil residue.And the effects of solubility and polarity parameters of extractants on extraction rate and extract components were investigated.The results show that with the increase in solubility and polarity parameters of extractants,the extraction rate for coal liquefied oil residue in creased and then decreased.The influence of the solubility parameter of extractants on the extraction performance was mainly reflected in their matching degree with the solubility parameter of the extractable components.The effect of the polarity parameter of the extractants was mainly the breaking of the associated structure of coal liquefied oil residue.When the solubility parameters of the extracts and extractants were close,the extraction performance was good,such as aromatic hydrocarbon and tetrahydrofuran.The main components of these extracts were polycyclic aromatic hydrocarbons.The extractants with larger polar parameters were more likely to destroy the associated structure of coal liquefied oil residue,resulting in higher contents of N and S elements in acetone,ethanol,and methanol extracts.Simulated coking benzene was a good solvent for extracting coal liquefied oil residue,which was easy to be recovered from solution,and the extraction rate of coal liquefied oil residue could reach more than 50%.

关 键 词：煤液化油渣 溶解度参数 极性参数 萃取物收率 萃取物组成 焦化苯 

分 类 号：TQ529.1[化学工程—煤化学工程]