PROCESS FOR SULPHURDIOXIDE REMOVAL

PROCESS FOR SULPHURDIOXIDE REMOVAL

A process for removing sulfur dioxide from a gas stream by absorption in a buffered, aqueous thiosulfate and polythionate solution followed by regeneration of the enriched solution with hydrogen sulfide to form sulfur wherein excess hydrogen sulfide recovered from the regeneration step is introduced...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: O'DONNELL J J, NORTHUP JR A N, CARES W R, SLIGER A G
Format: Patent
Sprache:eng
Schlagworte:
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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Beschreibung
Zusammenfassung:A process for removing sulfur dioxide from a gas stream by absorption in a buffered, aqueous thiosulfate and polythionate solution followed by regeneration of the enriched solution with hydrogen sulfide to form sulfur wherein excess hydrogen sulfide recovered from the regeneration step is introduced to the absorption step to reduce bisulfite concentration in the enriched solution.