Catalyst regeneration

Details Catalyst regeneration Catalyst regeneration

1977-12-19

1981-08-18

Gantz, Delbert E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

570243, 252411S, C07C 17152

Patent

active

042848334

ABSTRACT:
The active life of an oxychlorination copper-containing catalyst is extended by the removal of sulfur-containing compounds from the gases fed to the catalyst reaction zone. A copper-containing oxychlorination catalyst which has been deactivated by the deposition of sulfur compounds thereon is reactivated in situ by operating the catalyst bed in an oxygen-free atmosphere for a sufficient period of time. The reactivation of the catalyst is completed when the conversions of hydrocarbon and chlorinating agent to chlorinated products indicate a high level of catalyst activity, as determined by an analysis of the gaseous effluent leaving the catalyst bed.

REFERENCES:
patent: 2113028 (1938-04-01), Kuentzel
patent: 2407701 (1946-09-01), Jones et al.
patent: 3363010 (1968-01-01), Schwarzenbek
patent: 3427359 (1969-02-01), Rectenwald et al.
patent: 3440178 (1969-04-01), Lawrance et al.
patent: 3692693 (1972-09-01), Gunning et al.

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