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U.S. Department of Energy
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Purifying geothermal steam

Patent ·
OSTI ID:5920835

Residual geothermal steam containing hydrogen sulfide from a steam turbine is condensed with an aqueous solution of ferric chelate whereby the hydrogen sulfide is converted to free sulfur and the ferric chelate is converted to ferrous chelate. The ferrous chelate is subsequently oxidized back to the ferric state and reused.

Assignee:
The Dow Chemical Co.
Patent Number(s):
US 4528817
OSTI ID:
5920835
Country of Publication:
United States
Language:
English