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Deviation propagation analysis along a cumene process by using dynamic simulations

Abstract : The dynamic response of benzene alkylation process to a set of deviations is analyzed with Aspen Plus Dynamics. A quantitative risk assessment is developed through simulations of deviation scenarios. The process comprises a reactor and three distillation columns with a recycle stream. The simulation scenarios are determined according to lessons learnt from accidents. This study underlines the conditions that induce an overpressure or a flooding in a distillation column. Three scenarios are proposed: feed flowrate variations, coolant flowrate reduction and cooling of the reboiler steam. Thereafter, the results allow calculating a set of risk indexes related to flooding and overpressure phenomena. This study underlines the deviation propagation effects that can be expected in all the process equipment. Moreover, it represents a significant contribution to the definition of the process control strategy and the necessary safety barriers.
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Submitted on : Wednesday, October 3, 2018 - 10:27:20 AM
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Carlos Murillo, Fatine Berdouzi, Nelly Olivier-Maget, Nadine Gabas. Deviation propagation analysis along a cumene process by using dynamic simulations. Computers & Chemical Engineering, Elsevier, 2018, 117, pp.331-350. ⟨10.1016/j.compchemeng.2018.06.010⟩. ⟨hal-01886696⟩



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