Compositions – Vaporization – or expansion – refrigeration or heat or energy... – With low-volatile solvent or absorbent
Patent
1987-06-19
1989-01-31
Wax, Robert A.
Compositions
Vaporization, or expansion, refrigeration or heat or energy...
With low-volatile solvent or absorbent
62109, 62112, 165 3, 252194, C09K 504
Patent
active
048013935
ABSTRACT:
A new absorbent for water vapor is disclosed which is non-oxidizing and is suitable for use as the absorption working pair in combination with H.sub.2 O in absorption heat pumps, and also as a liquid drying agent. The absorbent is comprised of a mixture of at least two alkali metal thiocyanates, preferably KCNS and NaCNS. The preferred weight ratio is between 3 and 4, which remains liquid at all water vapor pressures above 1/16 ATA (curve "30 Na" on the Figure). Further advantages are obtainable by incorporating at least one of lithium cations, cesium cations, and hydroxide anions in the absorbent mixture.
REFERENCES:
patent: 1738270 (1929-12-01), Zellhoefer
patent: 3458445 (1969-07-01), Macriss et al.
patent: 3541013 (1970-11-01), Macriss et al.
Prikhod'ko et al., "Study of Adsorption of Organic Substances in a Thiocyanak Melt by Impedance," Ukr. Khim. Zh. (Russ. Ed.) 1981, 47(4), 447-8.
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