Mineral oils: processes and products – Chemical conversion of hydrocarbons – Reforming
Patent
1975-09-15
1977-09-06
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Reforming
252415, 208139, C10G 3508, B01J 1118
Patent
active
040466736
ABSTRACT:
Supported iridium-containing hydrocarbon conversion catalysts which are at least partially deactivated due to the deposition of carbonaceous residues thereon during contact with hydrocarbons are regenerated by contacting the residue-containing catalyst, prior to contact with oxygen at elevated temperature, with a chlorine-containing reagent to increase the catalyst chlorine content to a level in the range of from about 0.7 to 2.0 wt. %, based on anhydrous, carbonaceous residue-free catalyst, and thereafter contacting the catalyst with a substantially sulfur-free gaseous mixture containing oxygen at a temperature varying from about 775.degree. to 900.degree. F. for a time sufficient to burn at least a portion of the carbonaceous residue from the catalyst while maintaining at least 0.7 wt. % chlorine on the catalyst during contact with said gaseous mixture.
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Cecil Richard R.
Fuqua Beverly B.
Paynter John D.
Ditsler John W.
Exxon Research and Engineering Company
Gantz Delbert E.
Hellwege James W.
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