Chemistry: fertilizers – Processes and products – Inorganic material
Patent
1992-04-29
1994-11-15
Lander, Ferris
Chemistry: fertilizers
Processes and products
Inorganic material
71 61, 423237, 4235731, 423DIG19, 423210, 423220, C05C 300, C01C 100, C01B 1702, B01D 5334
Patent
active
053644395
ABSTRACT:
An integrated system of non-condensable gas (NCG) and condensate treatment allows geothermal power plant condensate and non-condensable gas effluent streams containing H.sub.2 S and ammonia to be commercially useful for more than for cooling tower makeup. In the preferred embodiment, the pH of the condensate is increased by adding ammonia and the pH increased stream is contacted with NCG to scrub and oxidize the H.sub.2 S constituent of the NCG. By reducing the pH, the condensate or aqueous stream mixture can also be used to further transfer ammonia from the non-condensable gas stream to the aqueous stream, enriching the stream for use as a fertilizer/irrigation water mixture. If other commercial uses are desired for the mixture and/or oxidized NCG streams, they can be resin treated to remove the ammonia constituent. With the ammonia and H.sub.2 S constituents decreased, the condensate may be used for a variety of applications and the NCG can be injected or used as a commercial feed stream. Rejuvenation of the resin may be accomplished by recycling and purging with the treated NCG. The effluent purge gas may be used to further enrich irrigation waters. A nearly total elimination of all emissions from the geothermal power is thereby made possible.
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Fenton Donald M.
Gallup Darrell L.
Kelly Brian J.
Kitz Kevin R.
Obando Manuel E.
Jacobson William O.
Lander Ferris
Union Oil Company of California
Wirzbicki Gregory F.
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