Catalytic cracking of undesirable components in a coking process

摘要: Undesirable components of traditional coking processes are selectively cracked or coked in the vessel by injecting an additive into vapors vessel. The contains catalyst(s), seeding agent(s), excess reactant(s), quenching carrier(s), any combination thereof to modify reaction kinetics preferentially crack (or coke) these undesirable that typically have a high propensity coke, and often precursors coke process. These can also be very problematic downstream catalytic cracking processes, significantly contributing on catalyst deactivation. Exemplary embodiments present invention provide methods (1) decrease production, (2) increase liquid transportation fuels, (3) control crystalline structure, (4) quantity quality volatile combustible materials (VCMs) resulting coke. Pet from this process may unique characteristics with substantial utility.