辽河稠油中重组分氮氧化合物的高分辨率质谱表征  

Characterization of nitrogen and oxygen compounds in heavy fractions of Liaohe crude oil by ESI FT-ICR MS

作　　者：李鑫 李汉勇[1] 郭紫彤 郑江涛 王峥嵘 Li Xin;Li Hanyong;Guo Zitong;Zheng Jiangtao;Wang Zhengrong(Beijing Key Laboratory of Key Technology and Equipment for Deepwater Oil and Gas Pipelines,Beijing Institute of Petrochemical Technology,Beijing 102617,China;China Oil&Gas Piping Network Corporation(PipeChina),Beijing 100013,China)

机构地区：[1]北京石油化工学院深水油气管线关键技术与装备北京市重点实验室,北京102617 [2]国家石油天然气管网有限公司,北京100013

出　　处：《石油化工》2022年第3期325-332,共8页Petrochemical Technology

基　　金：国家自然科学基金项目(51774046);北京市级大学生创新训练项目(2021J00112);北京市级大学生创新训练项目(2021J00113)。

摘　　要：采用FTIR对辽河油田稠油中各胶质的亚组分、沥青质中所含官能团及分子结构进行表征,结合ESI FT-ICR MS法对辽河油田稠油中极性杂原子氮、氧化合物进行分析,并对稠油中化合物的分子结构进行推测。实验结果表明,辽河油田稠油重组分中存在不同形式取代的芳杂环结构,在正离子模式下检测到相对丰度最高的是碱性N_(1)类化合物,在负离子模式下检测到相对丰度较高的是非碱性N_(1)类化合物和酸性O_(1),O_(2)类化合物。碱性N_(1)类化合物主要是喹啉及其衍生物,非碱性N_(1)类化合物主要是咔唑及其衍生物,酸性O_(1)类、O_(2)类分别是酚类、羧酸类化合物及其衍生物。本研究结果为制备超稠油的改质降黏剂提供数据支撑。FTIR was used to characterize the functional groups and molecular structures in subcomponents of each resin and asphaltenes in heavy oil of Liaohe Oilfield.The polar heteroatom nitrogen and oxygen compounds in heavy oil of Liaohe Oilfield were analyzed by ESI FT-ICR MS method,and the molecular structures of compounds in heavy oil were speculated.The experimental results showed that there were different forms of substituted aromatic heterocyclic structures in heavy oil recombinants of Liaohe Oilfield.The alkaline N_(1) compounds with the highest relative abundance were detected in the positiveion mode,and the non-alkaline N_(1) compounds and acidic O_(1),O_(2) compounds with high relative abundance were detected in the negative-ion mode.Basic N_(1) compounds were mainly quinolines and their derivatives,while non-basic N_(1) compounds were mainly carbazoles and their derivatives.Acidic O_(1) and O_(2) compouds were phenols,carboxylic acids and their derivatives,respectively.This paper can provide data support for the preparation of super heavy oil viscosity reducer.

关 键 词：稠油 胶质 沥青质 高分辨率质谱 

分 类 号：TE622[石油与天然气工程—油气加工工程]