Process for the removal of vanadium-containing acid from an...

Details Process for the removal of vanadium-containing acid from an... Process for the removal of vanadium-containing acid from an...

B - Operations, Transporting

01

J

53/142, 252/1.D

B01J 23/92 (2006.01) B01J 23/94 (2006.01) C10G 45/04 (2006.01)

Patent

CA 1163810

A B S T R A C T PROCESS FOR THE REMOVAL OF VANADIUM-CONTAINING ACID FROM AN ACID-EXTRACTED DEACTIVATED DEMETALLIZATION CATALYST A process for the removal of vanadium-containing aqueous solution of an acid from a deactivated demetallization cata- lyst, in particular a silica based one used for hydro- demetallization of a residual oil, from which catalyst vanadium deposited thereon has been extracted with the aid of an aqueous solution of said acid, in which process the catalyst is washed with water or an aqueous solution of an acid, in particular sulphuric acid, until the vanadium-containing solution is substantially removed, which washing procedure is carried out in a fluidized bed in case the washing liquid has a pH greater than two.

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