Power plants – Utilizing natural heat – Geothermal
Patent
1978-01-25
1978-12-05
Hearn, Brian
Power plants
Utilizing natural heat
Geothermal
165 45, 423 42, 423 50, 423 93, 423101, 423141, 423195, 423561R, 423561B, 423 21, 75108, C01G 112
Patent
active
041279891
ABSTRACT:
A process for separating and recovering metal values and salts from brine, such as brine produced from a subterranean geothermal reservoir, in which the brine is pressurized to above the bubble point pressure and thereafter a precipitating agent, such as a soluble sulfide, is added to the brine to form insoluble metal sulfide precipitates. The precipitates are separated from the brine while maintaining the brine at a pressure above the bubble point pressure, and the hot brine is subsequently utilized to derive energy therefrom. The brine effluent after such energy derivation and the precipitate are optionally processed to primarily recover saleable salts and metal values, respectively.
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Christopher et al., "The Recovery and Separation of Mineral Values from Geothermal Brines", Hazen Research, Inc., U.S. Bureau of Mines Open File Report 81-75 pp. 1-36, Jun. 12, 1975.
Berthold et al., "Process Technology for Recovering Geothermal Brine Minerals", Hazen Research, Inc. U.S. Bureau of Mines Open File Report 35-75 pp. 136-154 Feb. 4, 1975.
Skinner et al., "Sulfides Associated with the Salton Sea Geothermal Brine", Economic Geology, vol. 62, 1967 pp. 316-330.
White, "Environments of Generation of Some Base-Metal Ore Deposits", Economic Geology, vol. 63, 1968, pp. 301-335.
Hartman Richard C.
Hearn Brian
Sandford Dean
Union Oil Company of California
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