Abstract:
The purpose of this study is to investigate the effect of variation of crude assay on the design of crude distillation column. Different crudes assay ( 6 samples of Sudanese crude oil ) with different properties which are processed at the KRC have been simulated using Aspen Hysys under the same operating conditions in order to identify the effect of this variation . Energy consumption optimization is done by using preheated train heat exchangers to raise the temperature of the crude from 31.2C^0 to 198.3C^0 (124500kw has been saved) . The simulation process show different products quantities with slightly variation in their purities. Specific products (e.g. naphtha) have been increased from 9.1% to 11.8%. As a result of that atmospheric residue decreases from 63.8 % to 60.9% by controlling the reflux ratio , pumps around flow rate and using multi feed locations. The design results are 2.4m column diameter , 27.6 m height of the column and 54 number of trays .
