Problems with 1 million tons of heavy oil for FCC feedstock
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Density: 960; salt content: 5; aromatics: around 55; alkanes: around 33; resins and asphalts: around 14. Please discuss what are the appropriate values for the specific reaction temperatures (temperatures before and after the nozzle, temperature at the exit of the riser), catalyst activity, reaction pressure, and reaction time (amount of fluidizing medium, amount of steam used in the CS nozzle)
After reviewing the analysis of the raw material, it has a high density and is considered a heavy oil; there is no specific data on its boiling range. The salt content is 5, measured in PPm. The levels of other heavy metals such as vanadium and nickel are not known. In my opinion, provided that there is sufficient capacity in the main fan and the external heat exchanger, the temperature of the raw material can be maintained between 205–220 degrees. The amount of steam used for atomization via the CS nozzle should be 6.5%, the exit temperature of the riser should be 515 degrees, and the reaction pressure should be adjusted according to the performance of the main fan. It is advisable to increase the ratio of catalyst to oil as much as possible, while keeping the temperature of the regenerator between 680–690 degrees.