Power plants – Utilizing natural heat – Geothermal
Patent
1989-11-22
1991-06-04
Ostrager, Allen M.
Power plants
Utilizing natural heat
Geothermal
165 45, F03G 406
Patent
active
050203282
ABSTRACT:
Spent geothermal fluid from a geothermal power plant comprises geothermal vapor in the form of steam and non-condensable gases, and geothermal liquid in the form of mineral-rich brines. A silencer, which receives the spent geothermal fluid, includes a chamber for receiving the spent fluid and which has a lower outlet from which the brine flows. The chamber has an upper outlet through which the geothermal vapor flows. A heat exchanger is connected to the upper outlet, the heat exchanger having a first portion for receiving the geothermal vapor and the second portion containing a working fluid that is vaporized by the heat contained in the geothermal vapor. As a result, the cooled geothermal vapor produces a low pH condensate and non-condensable gases in the first portion. The brines exiting the silencer through the lower outlet are combined with the low pH condensate and with the non-condensable gases to form waste fluid which may be disposed of by injection into a reinjection well.
REFERENCES:
patent: 4057964 (1977-11-01), Hutchinson
patent: 4187087 (1980-02-01), Whitescarver
patent: 4596307 (1986-06-01), Challis
patent: 4844162 (1989-07-01), Maassen et al.
Ormat Turbines (1965) Ltd.
Ostrager Allen M.
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