Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
1991-03-28
1993-01-26
Hruskoci, Peter
Liquid purification or separation
Processes
Preventing, decreasing, or delaying precipitation,...
252175, 252181, C02F 508
Patent
active
051820285
ABSTRACT:
Monofluorophosphate salts, especially sodium monofluorophosphate (Na.sub.2 PO.sub.3 F), when added to various industrial water systems in concentrations between 0.1 mg/L and 50 mg/L, significantly reduce the amount of calcium carbonate scale which is formed on heat exchange and other metallic surfaces of such systems.
Monofluorophosphate salts, especially sodium monofluorophosphate, when added to various water systems in concentrations between 0.1 mg/L and 50 mg/L also stabilizes soluble manganese ion and its reaction products, i.e., primarily MnO.sub.2, in desirable forms and reduced particle sizes.
Monofluorophosphate salts, especially sodium monofluorophosphate, when added to various water systems in concentrations between 1 mg/L and 500 mg/L also stabilizes soluble iron ion and its reaction products, i.e., primarily Fe.sub.2 O.sub.3.
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Boffardi Bennett P.
Sherbondy Ann M.
Calgon Corporation
Caruso Charles M.
Hruskoci Peter
Speer Raymond M.
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