Removal of hydrogen sulfide with on site generated sulfite

Details Removal of hydrogen sulfide with on site generated sulfite Removal of hydrogen sulfide with on site generated sulfite

B - Operations, Transporting

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23/344

B01D 53/14 (2006.01) B01D 53/34 (2006.01) E21B 43/34 (2006.01) F03G 7/04 (2006.01)

Patent

CA 2018008

ABSTRACT Geothermal steam is condensed with a sulfite solution to abate hydrogen sulfide. A portion of the hydrogen sulfide is converted in the condensation in the presence of soluble cationic polymeric catalysts to soluble sulfur compounds while avoiding elemental sulfur and carbonate formation. The remainder of the hydrogen sulfide is incinerated and the sulfur dioxide in the incinerator effluent is absorbed in an alkaline solution to form the sulfites for the geothermal steam conden- sation. By maintaining stoichiometric ratios, the hydrogen sulfide is substantially converted to soluble thiosulfate without the use of chelates, peroxides or makeup sulfites.

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