Cyclic catalytic hydrocarbon conversion process with reduced chl

Details Cyclic catalytic hydrocarbon conversion process with reduced chl Cyclic catalytic hydrocarbon conversion process with reduced chl

1996-12-13

1999-10-12

Lewis, Michael

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

502 50, 502 52, 208139, 208140, 423240S, B01J 2034

Patent

active

059654732

ABSTRACT:
A method is disclosed for recovering chlorine-containing species from the outlet gas of a hydrocarbon conversion process with a cyclic regeneration operation. The outlet gas from an off-stream catalyst bed in which regeneration is occurring is passed to another off-stream catalyst bed which contains spent catalyst and which is maintained at sorption conditions. The spent catalyst particles sorb the chlorine-containing species from the outlet gas. This method captures and retains within the hydrocarbon conversion process chlorine-containing species that would otherwise be scrubbed and lost from the process and that would need to be replaced by the injection of make-up chlorine-containing species. This method results in significant savings in operating costs of a cyclic regeneration process. This method is adaptable to many processes for the catalytic conversion of hydrocarbons in which deactivated catalyst are regenerated by a cyclic regeneration operation.

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