Improvements in the separation of liquids of different boiling points from mixtures thereof by fractional distillation
Реферат: 565,921. Fractional distillation. WOODALL-DUCKHAM (1920), Ltd., and CHADDER, W. J. Jan. 12, 1942, No. 470. Addition to 565,919. [Class 32] In the separation of mixtures of liquids of different boiling points by fractional distillation in a column according to the process of the parent Specification, the intermediate fraction is concentrated on the upper plates of the column and is then removed from the columns either at one time or in a sequence of short discharges with intervening periods, during which the intermediate fraction is reconcentrated. The liquid, e.g. a mixture of benzol, toluol and xylol is distilled in a heated still 5 surmounted by a column 6. Vapours pass to a condenser 8 and part of the condensate is refluxed through line 10, the remainder being withdrawn as product through line 11. When equilibrium conditions have been obtained, the intermediate condensate is withdrawn through lines 15, 19 and condenser 16 to receiver 17. In Fig. 2, a plurality of valves 18a, operated simultaneously by a handle 21, withdraw condensate from a number of trays. Specification 565,945 also is referred to.
Purification of liquid mixtures using distillatory-membrane separation
Номер патента: RU2341315C2. Автор: Крэйг У. КОЛЛИНГ,Джордж А. Мл. ХАФФ,Стивен Дж. ПИТЧ. Владелец: Бп Корпорейшн Норт Америка Инк.. Дата публикации: 2008-12-20.