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

Abstract

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

CLC Number:

TE624

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

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