Chemistry of inorganic compounds – Sulfur or compound thereof – Elemental sulfur
Reexamination Certificate
2006-03-08
2009-10-06
Vanoy, Timothy C (Department: 1793)
Chemistry of inorganic compounds
Sulfur or compound thereof
Elemental sulfur
C423S575000, C502S150000, C502S155000, C502S162000, C502S167000, C502S200000
Reexamination Certificate
active
07597872
ABSTRACT:
A process for treating a gas containing hydrogen sulphide (H2S) and sulphur dioxide, contacting the gasat a suitable temperature with an organic solvent containing at least a soluble catalytic system, comprising at least one compound comprising at least one functional group A consisting of a carboxylic acid function and at least one functional group B comprising at least one nitrogen atom and which can produce an acid-base type reaction with at least one functional group A under the operating conditions of said process;and recovering a gaseous effluent substantially depleted in hydrogen sulphide and sulphur dioxide along with liquid sulphur separated from the solvent by liquid-liquid decantation.
REFERENCES:
patent: 3160601 (1964-12-01), Hyde
patent: 3516793 (1970-06-01), Renault
patent: 3896215 (1975-07-01), Bratzler et al.
patent: 4456696 (1984-06-01), Arbir et al.
patent: 6315961 (2001-11-01), Boucot et al.
patent: 6495117 (2002-12-01), Lynn
patent: 6627108 (2003-09-01), Dezael et al.
patent: 2001/0055549 (2001-12-01), Lecomte et al.
patent: 2002/0012617 (2002-01-01), Lecomte et al.
patent: 2122674 (1972-09-01), None
patent: 2756197 (1998-05-01), None
patent: 2757147 (1998-06-01), None
patent: 2784370 (2000-04-01), None
patent: 2786111 (2000-05-01), None
patent: WO 90/07467 (1990-07-01), None
Carrette Pierre-Louis
Delfort Bruno
Drozdz Sophie
Raynal Ludovic
Institut Francais du Pe'trole
Millen White Zelano & Branigan P.C.
Vanoy Timothy C
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