Extraction of Oxidized Sulfur‐Containing Compounds of Non‐Hydrotreated Gas Oil

Abstract

The desulfurization of non-hydrotreated gas oil using oxidation followed by liquid/liquid extraction has been studied. The solvent extraction of oxidized sulfur-containing compounds of gas oil was carried out by utilizing various types of solvents, including acetonitrile, methanol, and 96 vol.-% ethanol. The performance of these solvents was carefully evaluated and compared by considering both desulfurization and gas oil recovery. It was found that their performance follows the order: acetonitrile > methanol > 96 vol.-% ethanol. The influences of operating conditions, such as number of extraction stages and solvent to gas oil ratio, on the desulfurization and recovery of gas oil, were investigated. Over 99 % desulfurization of gas oil was achieved after liquid/liquid extraction of the oxidized sulfur-containing compounds.

Optimization of extractive desulfurization of Malaysian diesel fuel using response surface methodology/Box–Behnken design

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“…Some factors must to be considered in solvent selection, i.e. selectivity, density, recoverability, cost, viscosity, toxicity, inflammability, corrosiveness, freezing point and chemical reactivity [12,13]. Different kinds of solvents have been explored as reported in pioneering studies.…”

Purifying of Waste Tire Pyrolysis Oil Using an S-ZrO2/SBA-15-H2O2 Catalytic Oxidation Method

“…The number of extraction steps can play a significant role in the removal of the oxidized sulfur compounds during the extraction of waste tire oil. It is expected that the desulfurization efficiency will be increased upon increasing the number of extraction steps in order to improve the extraction efficiency of the oxidized sulfur compounds [42]. In this study, the extraction of the oxidized sulfur compounds was investigated using acetonitrile as the extracting solvent.…”

Desulphurization of Transportation Fuels by Per-Formic Acid Oxidant Using MoOx Loaded on ZSM-5 Catalyst

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