重油硫化物分子组成表征技术及其在脱硫工艺中的应用

Molecular Composition Characterization of Sulfur-Containing Compounds in Heavy Oil and Its Application in Desulfurization Process

硫化物是原油中含量最丰富的杂原子化合物。在环境排放标准日益严格和原油资源重质化、劣质化的背景下,高硫原油加工问题受到了广泛关注,石化行业对低硫石油产品、低硫船用燃料油、低硫石油焦等产品的需求也更加迫切。汽油、柴油等轻质馏分中硫化物的化学组成已有较为清晰的认识,但重油、尤其是减压渣油中硫化物的分子组成与结构仍待深入研究。重点阐述基于高分辨质谱技术的重油硫化物分子组成表征技术及应用方面的研究进展,包括重油硫化物的分子组成与结构表征方法、硫化物分子组成的定量分析、重油脱硫过程中硫化物分子组成与转化。深入了解重油硫化物的分子结构与组成,可以为重油脱硫工艺及催化剂的改进提供重要的数据支撑和理论根据。

Sulfur-containing compounds are the most abundant heteroatom compounds in crude oils.With the increasingly stringent environmental regulations as well as heavier and inferior crude oil resources,the processing of high sulfur crude oil has received extensive attentions.The demands for low-sulfur petroleum products,low sulfur marine fuel oil,low sulfur petroleum coke and other products in the petrochemical industry are also becoming more and more urgent.The molecular composition of sulfur-containing compounds in gasoline and diesel have been clearly recognized.However,the molecular composition and structures of sulfur-containing compounds in heavy oil and vacuum residues still need to be further studied.The research progress in molecular composition characterization and relevant applications of sulfur-containing compounds in heavy oils based on high resolution mass spectrometry are elaborated,including the molecular composition and structure characterization methods,quantitative analysis as well as molecular composition and transformation during heavy oil desulfurization of sulfur-containing compounds in heavy oil.In-depth understanding of the molecular structure and composition of sulfur-containing compounds in heavy oils can supply important data and theoretical basis for improving the desulfurization process of heavy oils and related catalysts.