Process for removal of silica from geothermal brine
Patent
·
OSTI ID:6547981
Ammonium hydroxide is added to a mixture of high-temperature, high-pressure geothermal steam and brine to raise the pH of the brine to between 6.0 and 7.0 and precipitate out a gelatinous sludge of aluminum and iron hydroxides. The hydroxide sludge is suspended in the brine and sweeps out enough dissolved silica so that the temperature and pressure of the brine can be reduced with little, if any, formation of silica scale. Various metals and ammonium hydroxide may then be recovered from the brine. (3 claims)
- Assignee:
- Southern Pacific Land Co.
- Patent Number(s):
- US 4016075
- OSTI ID:
- 6547981
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
15 GEOTHERMAL ENERGY
152003* -- Geothermal Data & Theory-- Rock-Water-Gas Interactions
ALUMINIUM
AMMONIUM COMPOUNDS
AMMONIUM HYDROXIDES
BRINES
CHALCOGENIDES
CONTROL
ELEMENTS
FLUIDS
GEOTHERMAL FLUIDS
HYDROGEN COMPOUNDS
HYDROXIDES
IRON
MANAGEMENT
MATERIALS RECOVERY
METALS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PROCESSING
PURIFICATION
RECOVERY
REMOVAL
SCALE CONTROL
SEPARATION PROCESSES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
STEAM
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
152003* -- Geothermal Data & Theory-- Rock-Water-Gas Interactions
ALUMINIUM
AMMONIUM COMPOUNDS
AMMONIUM HYDROXIDES
BRINES
CHALCOGENIDES
CONTROL
ELEMENTS
FLUIDS
GEOTHERMAL FLUIDS
HYDROGEN COMPOUNDS
HYDROXIDES
IRON
MANAGEMENT
MATERIALS RECOVERY
METALS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PROCESSING
PURIFICATION
RECOVERY
REMOVAL
SCALE CONTROL
SEPARATION PROCESSES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
STEAM
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING