直馏VGO中芳烃的分子组成特点  

Molecular Characterization of Aromatics in Vacuum Gas Oil

作　　者：王小伟[1] 龙军[1] 田松柏[1] 王威[1] 代振宇[1] 黄玉萍[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2016年第2期312-318,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展计划"973"项目(2012CB224801)资助

摘　　要：采用傅里叶变换离子回旋共振质谱分析了大庆、胜利、辽河和塔河4种VGO的芳烃化合物类型和碳数分布,并对分离得到的芳烃组分进行钌离子催化氧化实验来考察其侧链形态和长度。结果表明,各VGO芳烃主要由Z值为-6^-40的分子组成,在15~50的碳数范围内呈单峰连续分布,不同类型芳烃化合物在各VGO中的相对含量存在差异。芳烃分子的侧链形态主要是碳数小于25的正构烷基,异构烷基的量较少;大庆、胜利VGO芳烃分子中碳数大于9的长正构烷基较多,而塔河、辽河VGO芳烃分子中碳数小于9的短正构烷基较多。VGO中芳烃分子大多数以芳环上有多个正构烷基的形态存在,少量为单取代或有异构取代基。Carbon number distributions of aromatics in Daqing,Shengli,Liaohe and Tahe four VGOs were analyzed by Fourier transform ion cyclotron resonance mass spectrometry.Aromatic fractions separated from the VGO were studied by ruthenium ion catalyzed oxidation reaction to get the information about the form and length of the side chain.The results showed that there are aromatic compounds with Z value from-6to-40 in these aromatic fractions,and the carbon number distribution of the aromatics was continuous with only one peak value in the range of15-50.The relative contents of aromatics in Daqing,Shengli,Liaohe to Tahe VGO were different from each other.The majority of the side chains in aromatics wasn-alkyls with the carbon number below 25.There are moren-alkyl side chains with carbon number above 9in Daqing and Shengli VGO,however,moren-alkyl side chains with carbon number below 9in Tahe and Liaohe VGO.By this information,it could be inferred that most of the aromatics have multi n-alkyls,and a little of the aromatics have onen-alkyl or someiso-alkyls.

关 键 词：减压馏分油 芳烃 分子组成 高分辨质谱 钌离子催化氧化 

分 类 号：TE622[石油与天然气工程—油气加工工程]