Patent ID: 7470409
Filing Date: 2008-12-30
Classification: C10G

Abstract:
1. An apparatus for cracking a hydrocarbon feedstock containing resid, said apparatus comprising: (1) a convection heater for heating said hydrocarbon feedstock; (2) an inlet for introducing steam to said heated hydrocarbon feedstock to form a mixture stream; (3) a flash/separation drum for treating said mixture stream to form i) a vapor phase at its dew point which partially cracks causing a temperature decrease and partial condensation of said vapor phase in the absence of added heat, and ii) a liquid phase; said drum further comprising (4) a convection heater for heating the vapor phase; (5) a pyrolysis furnace comprising a radiant section for cracking the heated vapor phase to produce an effluent comprising olefins, and a convection section; and (6) means for quenching the effluent and recovering cracked product therefrom.