B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 23/96 (2006.01) B01J 29/90 (2006.01) B01J 38/44 (2006.01)
Patent
CA 2057598
A method for regenerating a Group VIII noble metal catalyst which has been contaminated with coke during a reforming process. The method comprises (a) burning off the coke from the catalyst, (b) redispersing the noble metal on the surface of the catalyst support by contacting the catalyst with halogen gas and carbon dioxide and (c) chemically reducing the catalyst. The presence of carbon dioxide in the redispersing step improves the activity of the regenerated catalyst.
Méthode pour régénérer un catalyseur à base d'un métal précieux du Groupe VIII, lequel a été contaminé par du coke pendant un procédé de reformage. La méthode consiste : a) à brûler le coke pour l'éliminer du catalyseur; b) à redisperser le métal précieux sur le support du catalyseur en mettant ce dernier en contact avec un halogène gazeux et du dioxyde de carbone; c) à réduire chimiquement le catalyseur. La présence de dioxyde de carbone dans l'étape de redispersion améliore l'activité du catalyseur régénéré.
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
LandOfFree
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