煤基液体产物中酚类化合物的组成研究  

Distribution and composition of phenolic compounds in coal-based liquid production

作　　者：毛学锋 MAO Xuefeng(Beijing Research Institute of Coal Chemistry, Coal Science and Technology Research Institute Co. , Ltd. , Beijing 100013, China;State Key Laboratory of Coal Mining and Clean Utilization, Beijing 100013, China;National Energy Technology and Equipment Laboratory of Coal Utilization and Emission Control, Beijing 100013, China)

机构地区：[1]煤炭科学技术研究院有限公司煤化工分院,北京100013 [2]煤炭资源开采与洁净利用国家重点实验室,北京100013 [3]国家能源煤炭高效利用与节能减排技术装备重点实验室,北京100013

出　　处：《煤炭学报》2018年第1期265-271,共7页Journal of China Coal Society

基　　金：NSFC-山西省煤基低碳联合基金资助项目(U1610221);国家重点研发计划资助项目(2016YFB0600303)

摘　　要：以5种不同煤加工转化过程得到的液体产物煤衍生油为原料,研究了其中酚类化合物的组成与分布特征。首先将不同煤衍生油蒸馏切取富含酚170~210℃酚油馏分,采用酸碱抽提法提取其富集酚类组分,其次对富集酚类组分进行硅醚衍生化预处理,最后利用GC/MS详细分析了酚油馏分中酚类化合物的组成与分布。结果表明:不同煤衍生油的酚油馏分中酚类化合物主要由烷基苯酚、茚满醇、苯二酚3种类型组成,其中烷基苯酚均占90%以上。4号CDO其酚类类型包括烷基苯酚、茚满醇、苯二酚3部分,其中烷基苯酚占92.4%。低级酚占全部酚类的86.1%,高级酚占13.9%;2号CDO其酚类类型由烷基苯酚、苯二酚2部分组成,其中烷基苯酚占99.89%。低级酚占全部酚类的99.5%,高级酚仅占0.5%;1号CDO和3号CDO其酚类类型只包含烷基苯酚类,高温炼焦产生的1号CDO全部以低级酚为主。3号CDO低级酚占全部酚类的98.4%,高级酚占1.6%;5号CDO其酚类类型包括烷基苯酚、茚满醇2部分,其中烷基苯酚占94.8%。低级酚占全部酚类的91.6%,高级酚含量占8.4%。因此,应足够重视不同煤衍生油中低级酚的提取利用。The composition and distribution of phenolic compounds in five kinds of coal derived oils in coal-based liquid production from the different process of coal chemical industry were investigated.Firstly,the fractions were isolated from different coal derived oils by distillation in 170-210 ℃,which is rich in phenols.The method of acid and alkali was used to extract the phenolic compounds in 170-210 ℃ fractions.Secondly,the rich phenolic compounds were pretreated by silicon ether derivatization,and the characterization of phenols was analyzed by GC/MS.It was found that three types of phenolic compounds,such as alkyl phenols,hydroquinones and indanol,were in each phenol-rich oil fractions from different coal derived oils,in which alkyl phenols is above 90%.There were three types of phenolic compounds,such as alkyl phenols,hydroquinones and indanol in the No.4 CDO,in which alkylphenol contributed the 92.4% of the total phenols.The lower-rank phenols accounted for 86.1% of the total phenols,while the higher-rank phe-nols was about 13.9%.There were two types of phenolic compounds such as alkyl phenols and hydroquinones in the No.2 CDO,in which alkylphenol contributed the 99.89% of the total phenols.The lower-rank phenols accounted for99.5% of the total phenols,while the higher-rank phenols was only about 0.5%.There were one types of alkyl phenols in the No.1 CDO and No.3 CDO.The lower-rank phenols accounted for 100% of the total phenols in the No.1 CDO,while in No.3 CDO,the lower-rank phenols accounted for 98.4% of the total phenols,the higher-rank phenols was only about 1.6%.There were two types of phenolic compounds such as alkyl phenols and indanol in the No.5 CDO,in which alkylphenol contributed the 94.8% of the total phenols.The lower-rank phenols accounted for 91.6% of the total phenols,while the higher-rank phenols was about 8.4%.Therefore,the extraction and utilization of lower-rank phenols in different coal derived oils should be paid enough attention.

关 键 词：煤衍生油 酚油馏分 低级酚 高级酚 硅醚衍生化 

分 类 号：TQ529.1[化学工程—煤化学工程]