煤直接液化循环溶剂中芳烃的分子组成及分布特点  

Molecular Composition and Distribution Characteristics of Aromatic Hydrocarbons in Coal Direct Liquefaction Circulating Solvent

作　　者：李群花[1] 高山松[1] 舒歌平[1] LI Qunhua;GAO Shansong;SHU Geping(China Shenhua Coal to Liquid and Chemical Shanghai Research Institute, DCL National Engineering Laboratory, 201108 Shanghai, China)

机构地区：[1]中国神华煤制油化工有限公司,上海研究院煤直接液化国家工程实验室,上海201108

出　　处：《煤炭转化》2021年第1期18-25,共8页Coal Conversion

摘　　要：采用全二维气相色谱-飞行时间质谱/氢火焰离子化检测器(GC×GC-TOF MS/FID),从分子水平上对煤直接液化循环溶剂中的芳烃组分进行了表征。TOF MS检测器在信噪比为200的条件下共检测到439个单体峰,FID检测器在信噪比为1000的条件下共检测到614个单体峰,芳烃组分的总含量为53.64%。将TOF MS检测到的数据依z值分类,共划分为10个系列,依次为CnH2n-6,CnH2n-8,CnH2n-10,CnH2n-12,CnH2n-14,CnH2n-16,CnH2n-18,CnH2n-20,CnH2n-22和CnH2n-24系列;FID检测器比TOF MS多检测到CnH2n-26和CnH2n-30两个系列。芳烃组分中,同一系列中同时包含多种类型的同分异构体,如CnH2n-10系列中含六氢苊烯类、六氢芴类、八氢蒽类、八氢菲类等,CnH2n-14系列中含联苯类、苊类、四氢蒽类和二苯基甲烷类等,……。碳数分布检测结果显示,CnH2n-6,CnH2n-8,CnH2n-10,CnH2n-12,CnH2n-14,CnH2n-16,CnH2n-18,CnH2n-20,CnH2n-22,CnH2n-24和CnH2n-26系列中含量最高的化合物碳数依次为C12,C13,C14,C18,C14,C18,C18,C16,C17,C19和C22。The aromatic hydrocarbons in coal direct liquefaction circulating solvents were characterized at the molecular level by two-dimensional gas chromatography coupled with time-of-flight(TOF)MS and FID.The 439 individual peaks were detected by TOF MS detector at signal-to-noise ratio of 200,and 614 individual peaks by FID detector at signal-to-noise ratio of 1000.The total content of aromatic components is 53.64%.The data detected by TOF MS is classified according to the z value and is divided into 10 series,which are CnH2n-6,CnH2n-8,CnH2n-10,CnH2n-12,CnH2n-14,CnH2n-16,CnH2n-18,CnH2n-20,CnH2n-22 and CnH2n-24 series;FID detector detects two series more than TOF MS detector,which are CnH2n-26 and CnH2n-30 series.Aromatics components,the same series contains multiple types of isomers,such as CnH2n-10 series contains hexahydroacenaphthene,hexahydrofluorene,octahydroanthracene,octahydrophenanthrene,etc;the CnH2n-14 series contains biphenyls,acenaphthenes,tetrahydroanthracenes and diphenylmethanes,etc.The carbon number distribution test results show that CnH2n-6,CnH2n-8,CnH2n-10,CnH2n-12,CnH2n-14,CnH2n-16,CnH2n-18,CnH2n-20,CnH2n-22,CnH2n-24 and CnH2n-26,the carbon numbers of the compounds with the highest content in the series are C12,C13,C14,C18,C14,C18,C18,C16,C17,C19 and C22.

关 键 词：直接液化 循环溶剂 全二维气相色谱-飞行时间质谱/氢火焰离子化检测器 芳烃 分子组成 

分 类 号：TQ529[化学工程—煤化学工程]