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Method and device for introducing tetrachloride or zirconium, hafnium tetrachloride and their mixtures in a column for continuous extractive distillation under pressure of the chlorides
Method and device for introducing tetrachloride or zirconium, hafnium tetrachloride and their mixtures in a column for continuous extractive distillation under pressure of the chlorides
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机译:将四氯化物或锆,四氯化ha及其混合物引入塔中以在氯化物压力下连续萃取蒸馏的方法和装置
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摘要
The process and the device according to the invention relate to the introduction, at a stable, known flow rate, of sublimable tetrachloride into a column for continuous extractive distillation under pressure of the chlorides. The sublimable tetrachloride is dissolved in a hot dissolver in a liquid solvent such as KAlCl4, and is then recirculated by pump at a stable, known flow rate into an evaporator connected to the column. The solution is then heated in an evaporator in order to sublime the majority of the product which it contains, the sublimed vapors thus passing into the column at a stable, known flow rate. The process according to the invention is adapted, in particular, to a plant for the production of ArCl4 of nulear purity and of HfCl4.
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