Optimal Integration of Production Planning and Process Operationin Fluid Catalytic Cracking Unit

摘要

In order to insure that optimal production plan obtained by LP is feasible and determine operationconditions fulfilling the plan, production planning and process operation were optimized and integrated as twohierarchies in petrochemical industries. Based on general strategy of optimal integration of production planningand process operation, combined with the characteristic of fluid catalytic cracking unit (FCCU), concrete solutionof optimal integration in FCCU was presented. Firstly, production plan of FCCU was optimized by GIOPIMS.Secondly, a customized model of reaction and regeneration system was developed using Aspen Custom Modelerbased on experimental equation, and added to Aspen Plus. Thirdly, the whole model of FCCU was established inAspen Plus with the model of main fractionation column and absorption and stabilization system established usingbuilt-in unit operation model, combined with the customized model of reaction and regeneration system. Finally,appropriate optimization method was employed to solve the NLP problem to find optimal operation condition ofFCCU which could fulfill the plan. The solution of optimal integration was validated for a FCCU in a refinery.