(under the class definition) Processes directed to condensing the vapor evolved during distillation into a plurality of distinct fractions.
(1) Note. The vapor must be removed from the carbonizing zone and condensed in a plurality of zones having distinct temperatures.
SEE OR SEARCH CLASS
202, Distillation: Apparatus,
199, for apparatus in which vapor is passed through a condensate from itself to surrender high-boiling constituents.
203, Distillation: Processes, Separatory, 87, for a process directed to fractionally condensing the vapor outside the still and see "SEARCH CLASS" thereunder.
