Hochdruckverfahren zur Rückgewinnung von Schwefel
A solution of a polyvalent chelated metal is used to effect a catalytic oxidation of hydrogen sulfide to elementary sulfur. A process for the desulfuration of a gaseous charge containing H2S comprises: (a) contacting the charge with an aqueous catalytic solution comprising a chelated polyvalent meta...
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Main Authors | , , |
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Format | Patent |
Language | German |
Published |
24.12.2003
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | A solution of a polyvalent chelated metal is used to effect a catalytic oxidation of hydrogen sulfide to elementary sulfur. A process for the desulfuration of a gaseous charge containing H2S comprises: (a) contacting the charge with an aqueous catalytic solution comprising a chelated polyvalent metal in conditions such as to effect the oxidation of H2S to elementary sulfur and corresponding reduction of the metal to a lower oxidation state, recovering and reducing gaseous effluent depleted of H2S and a reduced aqueous catalytic phase containing elementary sulfur; (b) filtering off sulfur; (c) degassing and/or depressurizing part of the catalytic phase; (d) contacting the reduced and degassed phase from (c) with an oxidant and regenerating; and (e) recycling regenerated solution to (a). The aqueous reduced solution is thus separated into a main fraction F1 and a minor fraction F2 : the main fraction, without expansion, is recycled to the absorption stage (a). |
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Bibliography: | Application Number: DE19986014806T |