US PATENT SUBCLASS 208 / 365
.~.~.~ With heat recovery by indirect heat exchange

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

308  DF  FRACTIONATION {5}
347  DF  .~ Distillation {12}
364  DF  .~.~ Plural stages of vaporization {1}
365.~.~.~ With heat recovery by indirect heat exchange

DEFINITION

Classification: 208/365

(under subclass 364) Processes wherein the distilland is heated by indirect contact with a heated product of the distillation from the same or from a different stage of vaporization.

SEE OR SEARCH THIS CLASS, SUBCLASS:

343, for processes of recovering mineral oil from gases including heat exchange between lean and rich absorbents.

353, for rectification processes which include indirect heat exchange.

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196, Mineral Oils: Apparatus, 134, for apparatus for distilling mineral oil having means to recover heat from the vapor or residuum.

201, Distillation: Processes, Thermolytic,

14+, for a thermolytic distillation process wherein the distilland is heated by indirect contact with a heated product of the distillation process.

203, Distillation: Processes, Separatory,

21+, for a separatory distillation process wherein the distilland is heated by indirect contact with a heated product of a distillation step.