DBA、SDBS对渣油热反应中相分离及生焦粒度的影响

doi:10.3976/j.issn.1002-4026.2018.04.012

山东科学 ›› 2018, Vol. 31 ›› Issue (4): 72-78.doi: 10.3976/j.issn.1002-4026.2018.04.012

DBA、SDBS对渣油热反应中相分离及生焦粒度的影响

周迎梅

中国石油大学胜利学院化学工程学院，山东东营 257061

收稿日期:2018-05-09 出版日期:2018-08-20 发布日期:2018-08-20
作者简介:周迎梅（1982—），女，讲师，研究方向为重质油加工和油田化学研究，E-mail:zhouyingmei@slcupc.edu.cn

Effect of DBA、SDBS on phase separation and coking granularity during thermal reaction

ZHOU Ying-mei

School of Chemical Engineering, Shengli College，China University of Petroleum, Dongying 257061, China

Received:2018-05-09 Online:2018-08-20 Published:2018-08-20

摘要/Abstract

摘要：

以辽河、克拉玛依常压渣油为原料，研究了渣油热反应过程中相分离状况及生焦粒度的变化，并考察了添加剂对相分离过程和焦炭粒度的影响。结果表明，辽河常压渣油中加入十二烷基苯磺酸钠（SDBS）、十二烷基苯磺酸（DBA）能够明显改变热反应过程中相分离的过程，体系的容焦、悬焦能力增加，焦的粒度明显减小；加入DBA后克拉玛依常压渣油热反应生焦量明显下降。在热反应过程中DBA等与沥青质胶粒的极性官能团作用，抑制超分子胶束缔合，体系的相分离得到延迟；由于DBA的加入开始生成的焦比较细小，但焦碳中心数量较多，这样在生焦总量相似的情况下，焦炭粒度会明显减小。

关键词: 渣油, 相分离, 焦炭粒度, 沥青质, 生焦

Abstract:

In this paper, the phase separation and coke granularity of Liaohe atmospheric residuum (LHAR) and Karamay atmospheric residuum (KLAR) in the coking reaction were investigated. The effects of additives on the phase process and coke particle size were also investigated. The results showed that when sodium dodecyl benzene sulfonate (SDBS) and 4-Dodecylbenzenesulfonic acid (DBA) were added in LHAR,it could obviously change the phase separation process during the process of thermal reaction, the capacity of coking was increased and the size of coke was obviously reduced. The coke yield of KLAR in the coking reaction was decreased dramatically due to the addition of DBA. DBA could interact with the polar functional groups of asphaltene colloid in the process of thermal reaction. Therefore, the aggregation of asphaltene was inhibited and the phase separation of the system was delayed. The coke was smaller and the number of coke centers increased with the addition of DBA, So the coke size was reduced greatly when the total coke amount was similar.

Key words: asphaltene, coke, coke size, phase separation, vacuum residue

中图分类号:

TE624

周迎梅. DBA、SDBS对渣油热反应中相分离及生焦粒度的影响[J]. 山东科学, 2018, 31(4): 72-78.

ZHOU Ying-mei. Effect of DBA、SDBS on phase separation and coking granularity during thermal reaction[J]. SHANDONG SCIENCE, 2018, 31(4): 72-78.

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DBA、SDBS对渣油热反应中相分离及生焦粒度的影响

Effect of DBA、SDBS on phase separation and coking granularity during thermal reaction

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