Chemistry of inorganic compounds – Sulfur or compound thereof – Elemental sulfur
Patent
1978-08-14
1979-12-25
Peters, G. O.
Chemistry of inorganic compounds
Sulfur or compound thereof
Elemental sulfur
423576, 252411S, C01B 1704
Patent
active
041805542
ABSTRACT:
An improved method of regenerating a low temperature Claus catalyst bed having elemental sulfur deposited on the catalyst involving initially using a moderately hot effluent gas (typically 600.degree. to 650.degree. F.) from the first conventional Claus reactor to warm up the low temperature Claus reactor and remove deposited sulfur and after the outlet temperature of said low temperature reactor reaches a value high enough to decompose COS and CS.sub.2 (typically 600.degree. to 650.degree. F.), supplementing the moderately hot first conventional Claus reactor effluent gas with hot (typically 1000.degree. to 1200.degree. F.) waste heat boiler effluent such that the temperature of the regenerating catalyst bed can be elevated to about 700.degree. F. or higher. The intentional temperature excursion to about 700.degree. F. during catalyst regeneration improves the degree of regeneration of the catalyst bed, promotes higher catalyst activity and extends the catalyst life.
REFERENCES:
patent: 2561990 (1951-07-01), Miller
patent: 3749762 (1973-07-01), Montgomery
patent: 4035474 (1977-07-01), Kunkel et al.
Goddin, Jr. Clifton S.
Palm John W.
McIlroy Arthur
Peters G. O.
Standard Oil Company (Indiana)
Stevenson Robert B.
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