Desulfurization Of The Dibenzothiophene (DBT) By Using Imidazolium-Based Ionic Liquids(Ils)

Bilal Kazmi, Dr. Awan Zahoor, Dr. Hashmi Saud, Dr.zafar Khan Ghouri

Abstract


In this work we have examined the industrial scale extraction process of ultra low sulfur diesel with the help of simulation software ASPEN Plus®.This work focuses on  the [Cnmim][BF4](imidazolium-based) ionic liquid and employed it in the extractive desulfurization of the dibenzothiophene (DBT) from the model diesel  fuel under a very mild process conditions.UNIFAC(uniquasi functional activity) was chosen as the thermodynamic method to model the ionic liquid on ASPEN Plus® and different physical and chemical properties were then taken from the literature to be incorporated in the simulation model. Different parameteric analysis were studied for the removal of thiophene-based compounds from the model diesel. The results acquired shows the significance of imidazolium-based ionic liquids(ILs) for the extraction of S- contents from the liquid fuels  at an optimal process conditions of 40ᵒC and 2 bar pressure with the 2.8:1 ratio of ionic liquid and model diesel which validates the experimental results obtained previously in the literature.

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