Extractive distillation in combination with multi-stage evaporation
1,065,178. Extractive distillation. FARBENFABRIKEN BAYER A.G. Nov. 29, 1963 [Dec. 1, 1962], No. 47308/63. Heading BIB. Extractive distillation is carried out in distillation column 1 the base of which is connected by pipe 11 to a series of evaporators 25, 26, 27 and the vapours, formed by partial ev...
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