초록 ▼

Process for removing H2S from the exhaust steam in a geothermal power plant wherein the H2S containing steam is contacted with an aqueous solution containing a ferric chelate and a cationic polymeric catalyst such as poly(dimethyldiallyl ammonium chloride). The conversion of H2S to sulfur is acceler

Process for removing H2S from the exhaust steam in a geothermal power plant wherein the H2S containing steam is contacted with an aqueous solution containing a ferric chelate and a cationic polymeric catalyst such as poly(dimethyldiallyl ammonium chloride). The conversion of H2S to sulfur is accelerated by the use of a small amount of the catalyst.

대표청구항 ▼

A process for removing H2S from a geothermal fluid stream containing H2S which comprises (A) contacting said H2S stream in a first reaction zone with an aqueous solution at a pH range suitable for removing H2S wherein said solution contains (1) an effective amount of at least one ferric chelate, and

A process for removing H2S from a geothermal fluid stream containing H2S which comprises (A) contacting said H2S stream in a first reaction zone with an aqueous solution at a pH range suitable for removing H2S wherein said solution contains (1) an effective amount of at least one ferric chelate, and (2) an effective amount of one or more water soluble cationic polymeric catalysts whereby the conversion of H2S to free sulfur is accelerated in the presence of said polymeric catalyst and said ferric chelate is reduced to ferrous chelate, (B) contacting said solution containing ferrous chelate in a second reaction zone with an oxygen containing gas stream whereby said ferrous chelate is reoxidized to form a ferric chelate containing solution, and (C) recirculating said ferric chelate containing solution back to said first reaction zone.