Kinetics of gaseous product formation in the coke combustion of a fluidized catalytic cracking catalyst

Combustion of the coke deposited on a commercial catalytic cracking catalys t is studied by differential scanning calorimetry. The conditions of the in dustrial operation in a fluidized catalytic cracking unit causing deactivat ion (feed, contact time, and temperature, C/O ratio) and those used for reg eneration (catalyst stripping and temperature) have been reproduced. Combus tion heat of coke is strongly dependent on combustion temperature and on de activation severity (reaction conditions). Kinetic equations for the format ion of gaseous combustion products, CO, CO2, and H2O, have been determined, which are useful in the design of industrial regenerators.