Chemistry of inorganic compounds – Sulfur or compound thereof – Elemental sulfur
Reexamination Certificate
2008-04-15
2008-04-15
Langel, Wayne A. (Department: 1793)
Chemistry of inorganic compounds
Sulfur or compound thereof
Elemental sulfur
C423S576800
Reexamination Certificate
active
11063145
ABSTRACT:
The disclosed sulfur recovery system and process avoid some of the operational problems of conventional Claus plants and processes by replacing the reaction burner and furnace tube of a conventional Claus plant with a more efficient short contact time catalytic reactor assembly containing a SPOC™ catalyst that operates efficiently at elevated temperatures. Such Claus plant modification also reduces or avoids the negative effects of hydrocarbons, CO2and ammonia in Claus sulfur plant feeds, and permits efficient processing of dilute to concentrated H2S feeds. The disclosed modification makes possible the expansion of Claus plant capacity at lower cost.
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Keller Alfred E.
Ramani Sriram
Conley & Rose, P.C.
ConocoPhillips Company
Langel Wayne A.
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