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Deep desulphurization of gasoline and diesel fuels using non-hydrogen consuming techniques

Ali, Mohammad F. and Al-Malki, Abdullah and El-Ali, Bassam and Martinie, Gary and Siddiqui, Mohammad N. Deep desulphurization of gasoline and diesel fuels using non-hydrogen consuming techniques. Fuel 85 (2006) 1354–1363.

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Abstract

Abstract Desulphurization of FCC gasoline and diesel fuels has been investigated by chemical oxidation of sulphur containing compounds with hydrogen peroxide in the presence of an acid catalyst such as formic acid and acetic acid, followed by extraction of the oxidized compounds using acetonitrile. Oxidative desulphurization (ODS) of diesel fuel was found to be very promising approach for the reduction of up to 92% of sulphur at low temperature (50 8C) and atmospheric pressure. The direct extraction of diesel oil without any oxidation has resulted in about 45% sulphur removal, however such direct extraction also removed other aromatic hydrocarbons and affected the yield. The ODS is not successful with FCC gasoline due to the high olefinic content that tends to react with hydrogen peroxide to form epoxides. GC–MS technique was used to identify the sulphones during the oxidation of thiophenes. This study recommends that the oxidation extraction technique be used as an additional process to the hydrodesulphurization to enable the refiners to meet the future environmental sulphur regulations. The conventional hydrodesulphurization can be used to lower the sulphur content to few hundreds ppm. Then, the oxidation/extraction approach needs to be used to go for ultra-deep desulphurization as it may provide better mean and cost effective way in order to meet the future sulphur environmental requirements. q 2006 Elsevier Ltd. All rights reserved.



Item Type:Article
Subjects:Chemical Engineering
Divisions:College Of Engineering Sciences > Chemical Engineering Dept
Creators:Ali, Mohammad F. and Al-Malki, Abdullah and El-Ali, Bassam and Martinie, Gary and Siddiqui, Mohammad N.
ID Code:507
Deposited By:AbdulRahman
Deposited On:18 Mar 2008 16:12
Last Modified:12 Apr 2011 13:07

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