Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Reexamination Certificate
2006-02-14
2006-02-14
Johnson, Edward M. (Department: 1754)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
C423S244100, C423S244090, C423S231000, C423S226000
Reexamination Certificate
active
06998099
ABSTRACT:
A process is described for the catalytic removal of H2S gas from a sour gas stream in the presence of a chelate ligand of the formula (I)where:X is hydrogen, an alkali metal or NH4+,n is 1, 2 or 3, andat least one of the radicals R1to R6is alkyl, aryl, alkyloxy, aryloxy, carboxyl or hydroxyl, the remaining radicals being hydrogen, andthe metal in the metal chelate complex is a polyvalent metal, which can occur in more than one oxidation state.A mixture is also described for removing H2S gas from a sour gas stream, the mixture comprising an aminocarboxylate-containing metal chelate complex, and the use is also described of an aminocarboxylate-containing metal chelate complex for removing H2S gas from a sour gas stream.
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Hesse Werner
Jäger Hans-Ulrich
BASF - Aktiengesellschaft
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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