The final condensate is divided into two portions, one of which returns to the column, the other being withdrawn either as a finished product or to be conducted to some other part of the system.
SEE OR SEARCH CLASS
196, Mineral Oils: Apparatus,
99,.
203, Distillation: Processes, Separatory,
75, and 82, for a plural distillation process including returning a part of the condensate to a prior distillation zone and subclasses 93, 94, 97, and 98, for a single distillation process in which part of the condensate is returned to the distillation zone.