Distillation: processes – separatory – With chemical reaction – Including step of adding catalyst or reacting material
Patent
1988-09-12
1989-09-12
Bascomb, Wilbur
Distillation: processes, separatory
With chemical reaction
Including step of adding catalyst or reacting material
203 39, 203 51, 203DIG16, 204 64T, 204130, 423 73, 423492, B01D 332, C01G 2504, C01G 2704
Patent
active
048656950
ABSTRACT:
This is a method for molten salt systems related to distillation for zirconium-hafnium separation and prevents buildup of iron chloride by electrochemically reducing iron from the molten salt to give very low levels of iron chloride in the distillation column, to reduce corrosion, improve the product and, in some cases, to allow the molten salt system to be run continuously. The improvement comprises electrochemical purification of molten salt containing zirconium-hafnium chloride either, prior to introduction of the zirconium-hafnium chloride into a distillation column, or after introduction, or both, to substantially eliminate iron chloride from the zirconium-hafnium chloride. The molten salt during the electrochemical purification consists essentially of a mixture of chlorides of alkali metals, alkaline earth metals, zirconium, hafnium, aluminum, manganese, and/or zinc.
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Snyder Thomas S.
Stoltz Richard A.
Bascomb Wilbur
Stoltz R. A.
Westinghouse Electric Corp.
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