An HYSYS model for the crude distillation unit of the Port Harcourt Refining\nCompany has been developed. The HYSYS model developed includes 3 mixers,\n3 heaters, 1 heat exchanger, 1 desalter (3-phase separator), 2-phase separator\nand the main fractionating column. The raw crude was characterized\nusing Aspen HYSYS version 8.8 and the developed model was simulated with\nthe industrial plant data from the Port Harcourt Refining Company. The\nHYSYS model gave component mole fractions of 0.2677, 0.1572, 0.2687,\n0.0547, 0.2517 for Naphtha, Kerosene, Light Diesel Oil (LDO), Heavy Diesel\nOil (HDO) and Atmospheric Residue and when compared to plant mole fractions\nof 0.2710, 0.1560, 0.2650, 0.0530, 0.2550 gave a maximum deviation of\n3.2%. The HYSYS model was also able to predict the temperature and the tray\nof withdrawal for Naphtha, Kerosene, Light Diesel Oil (LDO), Heavy Diesel\nOil (HDO) and Atmospheric Residue as follows: tray 1......................
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