Electrochemical production of KNO/sub 3//NANO/sub 3/ salt mixture
A process for the electrolytic production of a chloride-free mixture consisting essentially of sodium and potassium nitrates is disclosed. In this process, an anolyte brine comprised of a mixture of sodium and potassium chlorides dissolved therein is electrolyzed in a membrane type electrolysis type cell to produce a mixed alkali metal hydroxide catholyte solution. The catholyte is reacted with nitric acid to form a mixed potassium-sodium nitrate solution. By properly adjusting the ratio of potassium chloride to sodium chloride concentration in the anolyte brine, a final nitrate product containing about from about 40% to about 80% NaNO/sub 3/ and from about 60% to about 20% KNO/sub 3/ by weight can be produced. The resulting product, after drying is suitable for use in many solar panel heat transfer applications.
- Assignee:
- Olin Corporation
- Patent Number(s):
- US 4465568
- OSTI ID:
- 6312940
- Resource Relation:
- Patent File Date: Filed date 16 Nov 1981; Other Information: PAT-APPL-322000
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
14 SOLAR ENERGY
POTASSIUM NITRATES
ELECTROCHEMISTRY
SODIUM NITRATES
SOLAR COLLECTORS
HEAT TRANSFER FLUIDS
BRINES
DRYING
ELECTROLYSIS
MIXTURES
NITRIC ACID
POTASSIUM CHLORIDES
SODIUM CHLORIDES
ALKALI METAL COMPOUNDS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
DISPERSIONS
EQUIPMENT
FLUIDS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LYSIS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
SODIUM COMPOUNDS
SOLAR EQUIPMENT
400400* - Electrochemistry
141000 - Solar Collectors & Concentrators