Japanese Patent JPS5116043

B1

1,222,191. Cracking. PULLMAN Inc. 21 March, 1969 [5 April, 1968], No. 15115/69. Heading C5E. A method for the conversion of hydrocarbons comprises transferring hot, freshly regenerated catalyst of fluidizable particle size from an upper regeneration zone through at least one standpipe to a reaction zone within the confines of a lower vessel, contacting in said reaction zone said catalyst with hydrocarbon feed under conditions suitable for cracking of said hydrocarbon feed, withdrawing cracked hydrocarbons and spent catalyst from the reaction zone, transferring said spent catalyst to the inlet of a stripping zone, stripping spent catalyst of strippable hydrocarbons, transferring cracked and strippable hydrocarbons to a product recovery zone, transferring stripped catalyst to the upper regeneration zone, and regenerating stripped catalyst by contact with an oxygencontaining gas at temperatures above those employed in the reaction zone, said standpipe transferring the regenerated catalyst to an open seal well positioned within the confines of the lower vessel, said open seal well being maintained in open pressure communication with the outlet of at least one confined elongated transfer zone serving as the reaction zone, a sealing and pressure-developing dense bed of fluidized regenerated catalyst being maintained in said open seal well and the thus developed pressure being employed for transferring catalyst from said open seal well through said confined elongated transfer zone, and cracked hydrocarbons and spent catalyst being withdrawn from said outlet of said transfer zone for said recovery, stripping and regeneration. The process may be used for cracking gas oils, reduced crudes and waxy feeds. Recycle may be employed.

JP11355272A

May 21, 1976

November 14, 1972

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B01J8/02; B01J8/22; B01J8/26; C10G11/18; (IPC1-7): C10G11/18

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