Patent ID: 6036848
Filing Date: 2000-03-14
Classification: B01D,B01J,Y10S

Abstract:
A method for replacing an at least partially deactivated catalyst from inside a catalytic reaction zone of a catalytic reaction column, wherein a fluid containing reagent is introduced into said catalytic reaction zone, said reaction zone comprising a catalyst disposed on a plate within the column, said process comprising:passing the fluid containing the reagents through a downcomer and through a distributing device situated below the catalyst,diverting a liquid phase of the fluid by using a diverter communicating with the distributing device so as to avoid passage of the liquid phase through the catalyst,introducing the diverted liquid phase in another reactive zone below the reactive zone from which the liquid phase has been diverted,removing the at least partially deactivated catalyst from the column,replacing the removed at least partially deactivated catalyst with an approximately equal amount of active catalyst, to form a reconstituted catalyst, andresuming circulation of the liquid phase through the fresh catalyst.