Method for decreasing chloride emissions from a catalyst reducti

Details Method for decreasing chloride emissions from a catalyst reducti Method for decreasing chloride emissions from a catalyst reducti

1996-12-19

2000-09-12

Dunn, Tom

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

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

502 53, 208140, B01J 3842, B01J 2034

Patent

active

061178098

ABSTRACT:
A method is disclosed for recovering chlorine-containing species from an outlet stream of a zone in which the catalytic metal of a chloride-containing catalyst is reduced. The outlet stream is passed to a sorption zone which contains catalyst and which is maintained at sorption conditions. The catalyst in the sorption zone sorbs the chlorine-containing species from the outlet stream. This method captures and retains within the process the chlorine-containing species that would otherwise be lost from the process and that would need to be replaced by the injection of make-up chlorine-containing species. This method results in a significant savings in capital and operating costs of a catalyst regeneration process that includes a reduction step. This method is adaptable to many catalytic hydrocarbon conversion processes which pass catalyst particles between or among moving bed reaction and regeneration zones.

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