US PATENT SUBCLASS 203 / 81
.~ Distillation of initial distillate

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


203 /   HD   DISTILLATION: PROCESSES, SEPARATORY

71  DF  PLURAL DISTILLATIONS PERFORMED ON SAME MATERIAL {5}
81.~ Distillation of initial distillate {2}
82  DF  .~.~> And returning distillation product to a previous distillation zone
83  DF  .~.~> Including the addition of water or steam

DEFINITION

Classification: 203/81

(under subclass 71) Processes directed to distilling all or a part of the distillate from the initial distillation operation.

(1) Note. The term "distillate" includes the portion of the incoming feed which is taken off "overhead" or taken off as a "side stream".

SEE OR SEARCH THIS CLASS, SUBCLASS:

43, for a separatory distillation process in which the initial residue is extracted with a liquid.

45, and 46, for a plural distillation process including extracting a distillate with a liquid and distilling the raffinate phase or the extractant phase.