Inhibition of scale deposition from steam generation fluids

Patent · Tue Oct 16 04:00:00 EDT 1984

OSTI ID:6183323

Watanabe, D J

A method for treating a hot water-containing fluid stream passing through a conduit, under conditions of temperature and pressure whereupon at least a portion of the water flashes to steam, to inhibit the formation of scale deposited on the conduit and/or dissolve any such scale already formed, and to inhibit corrosion of the conduit wherein there is added to the fluid stream an effective amount of a solution of a water-soluble compound which provides a nitrogen-containing cation capable of flashing to become a gas at high temperatures selected from the group consisting of ammonium halides, ammonium salts of inorganic acids, ammonium salts of organic acids, ammonium salts of alpha hydroxy organic acids, quaternary ammonium halides, quaternary ammonium salts of inorganic acids, quaternary ammonium salts of organic acids, amine salts of inorganic acids, amine salts of organic acids and amides. Optionally the solution or dispersion also contains a water-soluble or dispersible polymer and/or a buffering agent.

• Assignee: Union Oil Company of California
• Patent Number(s): US 4475930
• OSTI ID: 6183323
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
ADDITIVES
AMIDES
AMINES
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
BOILERS
BUFFERS
COMPRESSIBLE FLOW
CONTROL
CORROSION PROTECTION
DEPOSITS
DISPERSIONS
FLUID FLOW
HALIDES
HALOGEN COMPOUNDS
HOT WATER
HYDROGEN COMPOUNDS
LIQUID FLOW
NITROGEN COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PIPES
POLYMERS
PRESSURE EFFECTS
SALTS
SCALE CONTROL
SCALING
STEAM GENERATORS
TEMPERATURE EFFECTS
VAPOR GENERATORS
WATER