GB308736A - - Google Patents

Abstract

308,736. Distillation Dynamique. March 27, 1928, [Convention date]. Distilling plant and processes; alcoholic liquids, distilling; vapours, utilizing for effecting further evaporation.-In a fractional distillation process of the type in which the vapours are condensed by compression so as to utilize their latent heat, the working pressure in the fractionating column is regulated by the use of heating or cooling means in the column. Crude ethyl alcohol is supplied by a. pipe l to a column b heated by coils c. e. The vapours are withdrawn by a pump a and condensed in the coil c. The condensate passes to a sealed reservoir h from which it is withdrawn through a. float-controlled valve j by a pump d. Part of the condensate is drawn off at p<1> and a regulated amount is refluxed through the pipe t. Air, carbon dioxide, and other gases are withdrawn from the reservoir h through a valve q to a condenser k which returns any condensed vapours by a pipe s to the reflux. The working temperature and pressure of the column b is regulated by a cooling coil g and heating coil e, both of which may be thermostatically controlled by valves f<1>, f. The valve m is opened only when starting the distillation. A number of similar columns may be worked in series,