Control of salt precipitation from geothermal brine

Details Control of salt precipitation from geothermal brine Control of salt precipitation from geothermal brine

1992-03-31

1993-10-26

Hruskoci, Peter

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

606412, 606415, 166267, 210747, 210758, C02F 172

Patent

active

052563014

ABSTRACT:
Soluble salts are prevented from precipitating from a brine concentrate produced from the flashing a geothermal brine by diluting the brine concentrate with preconditioned condensate. The pH of the condensate is first adjusted to within two pH units of brine concentrate. Then concentration of sulfide ion is reduced by oxidizing sulfide to sulfate by exposure to air for a period of time sufficient to oxidize a substantial portion of the sulfide, but short enough to prevent a substantial concentration of oxygen from dissolving in the condensate. The preconditioned condensate is then mixed with the brine concentrate to form an injection stream. The injection stream is then injected into the earth.

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patent: 5028340 (1991-07-01), Gallup
patent: 5098578 (1992-03-01), Gallup et al.

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