An Effective H2S Abatement Process Using Geothermal Brine Effluents
- Key words
- Hydrogen Sulfide; Chemistry; Abatement; Noncondensable Gas; Scrubbing; Mineral Sulfide; Condensate; Flash Brine; Carbon Dioxide; Air Quality; Regulations; LLL; US DOE; SDG&E
- Conference
- Geothermal Resources Council Transactions
- Year
- 1979
- Session
- Hydrogen sulfide; Scrubbers; Air quality; Power plant design
- Language
- English
Abstract
A simple and potentially inexpensive method for removal of H2S from noncondensible gases evolved in geothermal flash processes has been successfully tested on a small scale in the field. This method consists of scrubbing the noncondensible gases of H2S with brine effluents which contain relative high concentration of Pb, Zn, and Fe such as those of the Salton Sea and Brawley Geothermal Fields in the Imperial Valley, California. For plant applications, noncondensibles including H2S would be ejected from a surface steam condenser (necessary to minimize the volume of liquid in contact with H2S) and scrubbed with effluent brine just prior to preinjection clarification. The metal sulfide precipates are removed in the clarification step and the noncondensibles, less H2S, are vented as usual.
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