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U.S. Department of Energy
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Removing geothermal odors

Journal Article · · J. Air Pollut. Control Assoc.; (United States)
OSTI ID:6281548
A new process for removing hydrogen sulfide gas from steam released at geothermal powerplants, developed by Coury and Associates Inc. for Electric Power Research Institute, was tested in cooperation with Pacific Gas and Electric Co. at The Geysers geothermal site, north of San Francisco, Calif. The test unit processed 1000 lb/h of steam; a 50 MW commercial unit would process 1 million lb/h steam. In the new process, geothermal steam is condensed in a heat exchanger; about 95% of the hydrogen sulfide and other noncondensable gases are diverted in a separate stream. The clean condensate is then re-evaporated by the heat extracted from the incoming steam. The steam thus produced goes on to drive a turbine and generate electricity. The new process will continue to remove the hydrogen sulfide and its odors, even when the plant is temporarily shut down.
OSTI ID:
6281548
Journal Information:
J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 30:7; ISSN JPCAA
Country of Publication:
United States
Language:
English