Fluid Catalytic Cracking with Zeolite Catalysts

acid alyst amorphous catalysts aromatics asphaltenes bead catalysts boiling range C. J. Plank carbon carbonium ion Catal catalyst activity catalyst circulation catalyst/oil cations Chem CO2/CO ratio coke coke formation combined feed combustion commercial contact time riser conversion crackability crude cyclones dehydrogenation dense bed diffusion effect faujasite FCC catalyst feed preheat feedstock flue gas fluid catalytic cracking fluidized fraction fresh feed fuel oil GAS COMPRESSORS gas oil gas plant gasoline Greensfelder heat higher hydrocarbon hydrogen hydrogen transfer hydrotreated Ibid increase isobutane J. J. Blazek kinetic levels metals molecular weight molecules Nace naphthenes nitrogen octane Oil Gas olefins operation oxygen P. B. Weisz paraffins particles petroleum pore porphyrin pressure reactant reaction reactive reactor recycle regenerated catalyst REHX selectivity short contact silica-alumina sodalite steam sulfur surface temperature thermal tion U.S. Patent variables Venuto Weekman yield zeolite catalysts