Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Patent
1991-11-29
1993-05-18
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
208 27, 208 89, 502 30, 502 53, 585747, 585749, B01J 2396, B01J 2732, C10G 7338, C10G 7310
Patent
active
052121283
ABSTRACT:
The isomerization activity of hydroisomerization catalyst is recovered by subjecting the catalyst to a wash using light aromatic solvents at elevated temperature, e.g. toluene at 300.degree. C. This hot aromatic solvent wash may be preceded by a hot hydrogen containing gas strip. Catalyst activity can be maintained by the continuous or periodic addition of light aromatic solvent or light aromatic containing materials to the feeds sent to the isomerization catalyst.
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Achia Biddanda U.
Schorfheide James J.
Allocca Joseph J.
Exxon Research & Engineering Company
Konopka Paul E.
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