Patent ID: 8650876

Claim:
A method for removing hydrogen sulfide from steam condensate in a geothermal power generating unit comprising: (a) extracting a first steam condensate from a surface-type main condenser, the first steam condensate including dissolved hydrogen sulfide and ammonia, and (b) extracting a condenser vent gas through a gas ejector system, the condenser vent gas comprising carbon dioxide, and (c) contacting a predetermined portion of the first steam condensate with a predetermined portion of the condenser vent gas under a first pressure to produce a second steam condensate; (d) exposing the second steam condensate to a second pressure, the second pressure being sufficiently low to produce a mixed stream of a third steam condensate and a vapor phase under the second pressure; (e) separating the mixed stream into a third steam condensate stream and a vapor phase stream; and (f) providing a portion of the third steam condensate to a cooling tower as make up water.