Wednesday, December 24, 2014

Removal of refractory sulfur and aromatic compounds from straight run gas oil using solvent extraction

Removal of refractory sulfur and aromatic compounds from straight run gas oil using solvent extraction

Type
Journal Article
Author
Sunil Kumar
Author
Vimal Chandra Srivastava
URL
Volume
4
Issue
73
Pages
38830-38838
Publication
RSC Advances
Date
2014-08-26
Abstract
Researchers investigated extraction of sulfur and polyaromatic impurities from actual straight run gas oil (SRGO) containing 1.3 wt% sulfur using a variety of solvents, including acetonitrile, N,N-dimethylformamide, furfural, N,N-dimethylacetamide and dimethyl sulfoxide.
They examined the effects of water as antisolvent, extraction conditions and types of extraction operation. They evaluated the performance of solvent extraction process, which is governed by the degree of sulfur removal (Dsr) and yield of extracted SRGO (ESRGO), in terms of a performance factor (Pf,α), which they defined in terms of weight factor (0 < α < 1) as: Pf,α = αDsr + (1 − α) yield. They observed DMF to be a better solvent in terms of Pf,α and regeneration ability.

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