CHARACTERIZATION OF DISTILLATION RESIDUE OF SUDANESE CRUDE OILS

Abstract

This study evaluates the atmospheric distillation of the different Sudanese crude oils (Nile blend, Hejlig Crude, Tharjath crude, Fulla blend) and discussed the process of distillation under atmospheric pressure and the best ways to deal with the residue. In this study we evaluate the different Sudanese crude oils by using true boiling point (TBP) instrument and vacuum distillation by (i-ficher Dist D1160) and others physical and chemical properties (sulfur content, API, S.G, TAN). The metals were checked by induced couple plasma (ICP) beside the carbon number distribution test by GC. in this study we note that the sample (N), which represents a mixture of Nile Blend and the sample (G) which represents the Hejlig crude, give the best results in terms of the residue from the atmospheric distillation column and this indicates the lightness relative to such crude oils which are of high value (API), And the results of the sample (P, W) which represents Fulla blend and tharjath blend give high quantity of residue from atmospheric distillation represents approximately 80-87% of the crude oil , therefore, we found the processing of atmospheric residue from sample (P,W) is expensive and not economically feasible Therefore, the results from a combination of different sampling with each other, we find that the ratio (90:10) of the sample (G) with the sample (P) give the best properties of the formed blend (API = 32.6), which when processed in the atmospheric distillation column and vacuum distillation column give products of high and reasonable results for the residual from each of the two processes. The specification of the blend (G: P) is excellent compared to the specifications of (P) sample