煤焦油及其馏分油中烯烃分子组成表征  

Molecular Composition Characterization of Olefins in Coal Tar Liquids andTheir Derived Distillates

作　　者：张莹 孔繁格 朱悦 张未来 史权[1] 张霖宙 ZHANG Ying;KONG Fan′ge;ZHU Yue;ZHANG Weilai;SHI Quan;ZHANG Linzhou(Petroleum Molecular Engineering Center(PMEC),State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China)

机构地区：[1]中国石油大学(北京)重质油国家重点实验室石油分子工程中心,北京102249

出　　处：《石油学报（石油加工）》2024年第5期1462-1472,共11页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点研发计划项目(2021YFA1501201);国家自然科学基金优秀青年科学基金项目(22222815)资助。

摘　　要：针对煤焦油中的烯烃化合物进行了分子水平表征,以气相色谱-质谱联用技术和银离子络合电喷雾超高分辨率质谱法为手段,揭示了低温煤焦油和高温煤焦油中烯烃化合物的组成分布,获得了C_(12)~C_(40)范围内烯烃分子类型及碳数分布信息。结果表明:低温煤焦油相比高温煤焦油具有更高的烯烃含量;富含烯烃的低温煤焦油通过馏分切割为轻质馏分(≤360℃)和常压渣油馏分(>360℃),通过对不同馏分的烯烃分子组成分析发现,轻质馏分260~320℃馏分段中烯烃含量最高,常压渣油馏分中也存在较为丰富的烯烃化合物。煤焦油及其馏分中烯烃详细的定性及半定量信息为目标烯烃的分离及煤焦油的高效清洁利用提供分子层次依据。The molecular level characterization of olefins in coal tar was carried out in this study.The molecular distribution of the olefins in the low temperature coal tar(LTCT)and high temperature coal tar(HTCT)was revealed by the gas chromatography-mass spectrometry(GC-MS)and Ag+complexation high-resolution mass spectrometry(HR MS),and the types and carbon number distributions of olefins in the range of C_(12) to C_(40) were obtained.The results show that the LTCT contains more olefins than HTCT.In addition,the olefin-rich LTCT was cut into light fractions(≤360℃)and atmospheric residue fractions(>360℃)by distillation,and different distillates were studied for detail molecular composition information.It is found that the light fraction has the highest olefin content in the temperature interval of 260—320℃,and atmospheric residue distillates also have abundant olefins.Then olefins composition distribution were obtained for each distillated fraction.This paper provides the detailed qualitative and semi-quantitative information of olefins in coal tar and its distillates,as well as the molecular-level basis for the target olefin separation and the efficient clean utilization of coal tar.

关 键 词：煤焦油 烯烃 银离子络合 超高分辨率质谱 半定量分析 

分 类 号：TE622[石油与天然气工程—油气加工工程]