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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Bibliographic Details
Main Authors QUEYREL, JACQUES, LECOMTE, PATRICE, DEZAEL, CLAUDE
Format Patent
LanguageGerman
Published 24.12.2003
Edition7
Subjects
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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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).
Bibliography:Application Number: DE19986014806T