University of Khartoum

Reduction of Naphthenic Acids in Sudanese Fula Crude Oil using Fluid Catalytic Cracking Catalyst

Reduction of Naphthenic Acids in Sudanese Fula Crude Oil using Fluid Catalytic Cracking Catalyst

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Title: Reduction of Naphthenic Acids in Sudanese Fula Crude Oil using Fluid Catalytic Cracking Catalyst
Author: Elsamani, Isra Awad Omer
Abstract: The presence of naphthenic acids considerably increases corrosion of the high temperature parts of the distillation units. These acids are also present in distilled fractions of petroleum, causing several problems in its final product quality. A possible method to remove those acids from petroleum is through adsorption in a porous material. In this work, a commercial Fluid Catalytic Cracking (FCC) catalyst was evaluated concerning its capacity of removing naphthenic acids from a real crude oil sample, and the influence of the oil/catalyst ratio, the thermal treatment previous to the removal and the temperature were investigated. It was shown that theFCC catalyst is able to reduce naphthenic acids. A Total Acid Number (TAN) reduction of 15.9% was achieved using oil/catalyst ratio of 3:1, and reduction of 13.2% using oil/catalyst ration of 4:1. The application of the thermal pre-treatment to the catalyst resulted in a reduction in TAN of 16.4% at room temperature. An increaseof temperature to 190 oCresulted in TAN reductionof 22.3%. Results clearly show that the removal is enhanced with the application of the thermal pre-treatment and the increase of crudeoil temperature.
URI: http://khartoumspace.uofk.edu/123456789/26102


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