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 50, 203DIG16, 203 39, 203 86, 23294S, 423 73, 423492, B01D 336, C01G 2504, C01G 2704
Patent
active
048656933
ABSTRACT:
This is a zirconium-hafnium separation process utilizing a complex of zirconium-hafnium chlorides and phosphorus oxychloride. The complex is introduced into a distillation column and a hafnium chloride enriched stream is taken from the top of the column and a zirconium chloride enriched stream is taken from the bottom of the column. In particular, the invention utilizes prepurification of the zirconium-hafnium chlorides prior to introduction of the complex into the distillation column to substantially eliminate iron chloride; thus, the buildup of iron chloride in the distillation column is substantially eliminated and the column can be operated in a continuous stable, and efficient manner.
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Bascomb Wilbur
Stoltz R. A.
Westinghouse Electric Corp.
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