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Application of Hengstebeck's Model in Multicomponent Crude Oil Distillation Design

Olalekan Michael Adeloye, Igbagara Princewill Woyinbrakemi, Akpa Jackson Gonurubon

Abstract


Mathematical models were developed for the analysis of the Atmospheric Crude Distillation Unit of Port Harcourt Refinery in Nigeria. The resultant system of equations was solved using the method of matrix inversion using Mathlab software and the models predicted with reasonable accuracy composition of side draws (different fractions) and temperatures. Also, the effect of process parameters on the overall performance of the unit was studied. In addition, the study applied the graphical Hengstebeck's method as a more accurate analytical tool, given its visual value to re-evaluateperformance of the crude distillation unit with respect to determination of unit dimensions such as internal diameter and number of trays of the crude distillation unit. The results showed that the Hengstebeck's method is not suitable for the sweet medium BonnyLight crude oil feedstock with API value below 38 due to the method’s inability to generate the most elementary parameter of the number of theoretical stages upon which the other crude distillation unit dimensions are determined.


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