渣油超临界萃取窄馏分与其焦化性能的关系  

The Relationship between Coking Reactivity with Super Critical Extraction Subfractions

作　　者：孙学文[1] 郭秀颖[1] 李平[2] 曾海[2] 黄鹤[2] 

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京 [2]中国石油天然气股份有限公司辽河石化公司,辽宁盘锦

出　　处：《化学工程与技术》2018年第2期65-76,共12页Hans Journal of Chemical Engineering and Technology

摘　　要：本文研究了三种不同减渣超临界萃取窄馏分性质及其焦化性能的关系,研究结果表明,焦化产品收率与原料的KH之间存在良好的线性关系。随着萃取窄馏分变重,焦炭收率增加,生成的轻油破坏了窄馏分体系的稳定性,使得芳香分及胶质中的芳香环缩合成焦炭,也增加了焦炭的收率。研究发现,焦炭收率除了与CCR相关外,也与原料的SARA、杂原子含量有关。焦化反应过程中,沥青质几乎完全转化为焦炭,65.52%的残炭转化为焦炭,芳香分和胶质对生焦量的贡献超过15%。金属的存在,促进焦炭生成,硫对生焦具有抑制作用。The relationship between coking reactivity with the properties of supercritical fluid extraction fractionation (SFEF) subfractions was studied in this paper. The results showed that the products yield can be related to KH, good linear relationships are existed between them. Coke yield was in-creased with the SFEF subfractions becoming heavier, while the light oil produced in coking de-stroyed the stability of subfraction system and led aromatic rings including in aromatic and resin convert to coke. Hence, except CCR, the coke yield is also closely related to SARA. During coking, almost all asphaltene and 65.52% CCR were covered to coke, the contribution of aromatics and re-sin for coke were exceeded 15%. Furthermore, the coke yield was increased with the increasing of Ni + V content, but it was reduced with the increasing of sulfur existed in subfractions.

关 键 词：渣油 超临界萃取 窄馏分 焦化 

分 类 号：TE6[石油与天然气工程—油气加工工程]