(under subclass 98) The combination of a vaporizer with a condenser, usually a dephlegmator or fractionating column, provided with means for returning part or all of the condensate from the condenser to the vaporizer.
SEE OR SEARCH THIS CLASS, SUBCLASS:
139, for dephlegmator or fractionating columns alone.
SEE OR SEARCH CLASS
201, Distillation: Processes, Thermolytic
29, for a thermolytic distillation process including the step of returning a volatile to the carbonization zone.
202, Distillation: Apparatus, 152, for separatory distillation apparatus including the combination of a vaporizer, a condenser and means for returning at least a part of the condensate from the condenser to the vaporizer.
203, Distillation: Processes, Separatory,
75, 78, 82, 84, 93, 97, and 98, for a separatory distillation process including the step of returning a condensate to a distillation zone.
