ABSTRACT
The key refining process that can provide petrochemical advantages is the fluidized catalytic cracking (FCC) process. The related commercial processes are deep catalytic cracking (DCC) and catalytic pyrolysis process (CPP). The DCC process provides high yields propylene (15-25 wt%) depending upon the type of feedstock and operating conditions. Other coproducts include ethylene-rich dry gas, aromatic gasoline, and cycle oil fractions. The CPP process operates at higher severity compared to DCC and uses a bifunctional catalyst producing even higher propylene and ethylene yields.
