Process for regenerating sulfur contaminated reforming...

Details Process for regenerating sulfur contaminated reforming... Process for regenerating sulfur contaminated reforming...

C - Chemistry, Metallurgy

10

G

252/7

C10G 35/095 (2006.01) B01J 29/90 (2006.01)

Patent

CA 1312324

ABSTRACT OF THE DISCLOSURE The present invention is a process for regener- ating a sulfur-contaminated, highly selective, large-pore zeolite catalyst. It comprises a multistep process involving exposure of the catalyst to a combination of oxidizing conditions, reducing conditions and treatment with a halogen acid gas. These conditions are effective to agglomerate a Group VIII metal and remove sulfur. Thereafter, the catalyst is oxychlorinated to redisperse the Group VIII metal over the catalyst surface. A carbon removal step is optionally included.

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