Electrochemical process for decomposition of hydrogen...

Details Electrochemical process for decomposition of hydrogen... Electrochemical process for decomposition of hydrogen...

2005-06-01

2008-05-27

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

C423S224000, C423S225000, C423S573100, C205S554000, C205S617000

Reexamination Certificate

active

07378068

ABSTRACT:
The present invention includes a process for the removal of hydrogen sulfide from hydrogen sulfide gas containing gaseous streams. In one embodiment, the process comprises feeding a sulfide ion containing solution to an oxidation unit. The method further comprises feeding an oxidizing gas to the oxidation unit and contacting the sulfide ion containing solution with the oxidizing gas under sufficient conditions to form a polysulfide solution comprising polysulfide and hydroxide ions. In addition, the process comprises mixing the polysulfide containing solution with a hydrogen sulfide gas under conditions sufficient for absorption of hydrogen sulfide and precipitation of sulfur from the polysulfide containing solution. In some embodiments, the process comprises separating the precipitated sulfur from liquid.

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