초록 ▼

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

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.

대표청구항 ▼

A process for using geothermal steam containing H2S to generate electricity with subsequent purification of the residual steam comprising (A) condensing said residual steam with an aqueous solution containing a ferric chelate in a condensing zone under temperature sufficiently low to convert said st

A process for using geothermal steam containing H2S to generate electricity with subsequent purification of the residual steam comprising (A) condensing said residual steam with an aqueous solution containing a ferric chelate in a condensing zone under temperature sufficiently low to convert said steam and said solution into an aqueous solution containing H2S and said ferric chelate; (B) converting said aqueous H2S solution to an aqueous solution containing free sulfur and ferrous chelate by contacting said aqueous H2S solution with an aqueous solution of ferric chelate containing a sufficient amount of ferric chelate to completely oxidize the H2S to sulfur; (C) converting said ferrous chelate solution with air in a cooling zone into an aqueous solution containing ferric chelate; (D) continuously adding ferric chelate to said ferric chelate solution to maintain said sufficient amount; and (E) recycling said ferric chelate solution back to said condensing zone.