Optimization of the Operating Parameters of the Extractive Distillation Column (C-51) in the 200-Unit (RA1K) to Minimize Benzene Losses Using Aspen HYSYS.
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Date
2023-06-23
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Publisher
UNIVERSITY OF 20 AOÛT 1955 SKIKDA
Abstract
Benzene is a widely recognized and important aromatic hydrocarbon, highly valued in the chemical industry and on the international market, serving as a fundamental building block for numerous products. Various industrial processes and technologies have been developed to minimize benzene losses like GT-BTX process in unit-200 of Skikda refinery. Unit-200 underwent renovation as part of the rehabilitation of the refinery. This involved acquiring a license for a new GT-BTX process (extractive distillation) and modernizing the instrumentation, resulting in increased aromatic yield. However, after one year of unit operation, the quantity of recovered benzene is lower than the design specification. Our work will involve simulating and optimizing the Extractive Distillation Column 51 (C-51) using Aspen HYSYS V12.1, to minimize benzene losses and improve the separation efficiency. In order to accomplish that we have found that increasing the Solvent/feed ratio is the most impactful parameters to bring losses back within the design range