Oxidative desulfurization of liquid hydrocarbon fuel: experimental and mathematical modeling study

Abstract

The positive increment trend in the world of continuously production of low sulfur content fuel as a transportation feed is under progressing. This issue is feasible by oxidative desulfurization as one of the most promising approaches. To cope with the difficulties and limitations of hydrotreating units, integration with oxidative desulfurization can be a vital solution. This assay presented Fenton process as a treatment method and explain a comprehensive analysis of different parameters and characteristics of this method on a model fuel of toluene. So contains experimental and modeling results for optimizing the reaction parameters to Fe⁺²/H₂O₂=0.05 molar ratio, T=50 °C, agitation speed= 200 rpm, oil volume ratio=0.4 and reaction time of 40 min under acidic pH. Then mass transfer characteristics estimated and process progressing studied. Since the oxidation occurred under estimated conditions, 79.3% efficiency achieved in the first-order kinetics. Parameters optimized for toluene as a model fuel nutriment by DBT as a sulfur contamination and oxidized under hydrogen peroxide as the oxidizing agent and ferrous ions as the catalyst. Which temperature and oil volume fraction play the most important roles in the progressing of the reaction. Kinetics modeling and calculations of reaction time constant, mass transfer coefficient, droplet diameter and surface area investigated under optimized condition