Kinetics of Oxidation Desulfurization by Non-Thermal Plasma for Heavy Naphtha

Noor M.  Abdulla; Hussien Q.  Hussien; Rana R. Jalil

doi:10.52716/jprs.v15i1.840

Authors

Noor M. Abdulla Chemical Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq
Hussien Q. Hussien Chemical Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq
Rana R. Jalil Ministry of Oil, Petroleum Research and Development Center, Baghdad, Iraq

DOI:

https://doi.org/10.52716/jprs.v15i1.840

Keywords:

desulfurization, non-thermal, plasma, heavy naphtha, oxidation.

Abstract

This study optimized the condition of a model fuel containing organo-sulfur compounds (benzothiophene and dibenzothiophene) that were oxidized by non-thermal plasma. The process involved ozone generation through dielectric barrier discharge, followed by extraction using acetonitrile. The results demonstrated the efficient oxidation and removal of dibenzothiophene and benzothiophene by non-thermal plasma. The desulfurization efficiency reached 93.78% under the optimum conditions, that involving a voltage of 11Kv, temperature of 50ºC, duration of 4 hours, and a flow rate of 75 ml/min. When heavy naphtha was oxidized under optimal conditions, it was found that sulfur removal was 91. 082%. Furthermore, the kinetics of oxidation for this system were investigated, it Supposed mechanism and kinetics studies on ozone revealed that the oxidative desulfurization of organosulfur compounds could present a pseudo-first-order kinetic. The reaction rate constant for heavy naphtha was d 0.4759 h-1.

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