Optimization of the Effect of Various Parameters on the Reactor of FCC Unit Using Simulation in Petro-SIM Software

The fluidized bed catalytic cracking unit is the most important conversion process in a refinery that converts heavy and low value cuttings to light and more value cuttings. Various parameters effect on FCC reactor include in: feed temperature, regenerator temperature, temperature of air to regenerator, feed time contact with catalyst, reactor pressure, catalyst activity, catalyst per oil ratio, feed mass flow, stripper steam rate, fresh catalyst flow rate, air flow rate to regenerator and else. Subject of this thesis is to understanding of different parameters that effect on FCC reactor and chose profit as subject function and effective parameters as variables, study any of these parameters to reach the maximum profit. In this thesis FCC reactor is simulated based on the FCC unit reactor data of Abadan refinery phase 3 and chose the effective parameter by Plackett-Burman method and optimization to the maximum profit. Also specified by Plackett-Burman method that reactor pressure, fresh catalyst flow, riser temperature and oxygen flue gas volume percent are the most effective respectively and riser temperature, fresh catalyst flow and reactor pressure are the most effective parameters respectively.Furthermore results of optimization demonstrated gasoline production have been increased 459 kg/h and second subject function profit have been increased 110 $/h.