US PATENT SUBCLASS 208 / 361
.~.~ Flash vaporization


Current as of: June, 1999
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208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

308  DF  FRACTIONATION {5}
347  DF  .~ Distillation {12}
361.~.~ Flash vaporization


DEFINITION

Classification: 208/361

(under subclass 347) Processes wherein the distilland is heated under pressure high enough to prevent ebullition and the heated distilland is then introduced into a zone of lesser pressure resulting in the volatilization of at least a portion of the distilland.

(1) Note. In flash vaporization, the distilland is usually heated at a pressure above atmospheric and released into a zone having a pressure less than atmospheric.

SEE OR SEARCH THIS CLASS, SUBCLASS:

352, for processes of rectifying mineral oils including flash vaporization.

SEE OR SEARCH CLASS

203, Distillation: Processes, Separatory,

88, for a separatory distillation process of heating the distilland under pressure high enough to prevent ebullition and the distilland is then introduced into a zone of lesser pressure.