Heat exchange – Regenerator – Checker brick structure
Patent
1983-09-26
1985-12-24
Doll, John
Heat exchange
Regenerator
Checker brick structure
252 70, 252 71, 423265, 423385, 423395, C01F 1136
Patent
active
045599939
ABSTRACT:
The present invention relates to a process for stabilizing a mixture of molten alkali metal nitrates and alkali metal nitrites usable particularly as a heat transfer fluid and to the stabilized mixture thus obtained.
The process comprises adding to the mixture a quantity of alkali metal hydroxide such that the value of the logarithm of the ratio P(H.sub.2 O)/.vertline.OH.sup.- .vertline..sup.2 (where P(H.sub.2 O) denotes the partial pressure of water vapor expressed in atmospheres and .vertline.OH.sup.- .vertline. the hydroxide ion concentration expressed in moles/kg) is between a value b corresponding to the disproportionation of the nitrites into nitrate and nitric oxide and a value a corresponding to the appearance of peroxides, the values a and b being determined for a given nitrate
itrite ratio, a given temperature and given partial pressures of the gases blanketing the mixture.
REFERENCES:
patent: 2375759 (1945-05-01), Kalichevsky et al.
patent: 2375760 (1945-05-01), Fahnestock
patent: 2375761 (1945-05-01), Bates
Flament Thierry
Picard Gerard
Saint-Paul Pierre
Spiteri Pierre
Tremillon Bernard
Doll John
Electricite de France
Langel Wayne A.
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