US PATENT SUBCLASS 208 / 341
.~.~ By absorption and vaporization

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

308  DF  FRACTIONATION {5}
340  DF  .~ Recovery of mineral oil from natural or converted gases {1}
341.~.~ By absorption and vaporization {4}
342  DF  .~.~.~> With fractional condensation prior to absorption
343  DF  .~.~.~> Indirect heat exchange between lean and rich absorbent
344  DF  .~.~.~> Plural absorption stages {1}
346  DF  .~.~.~> Absorption stage is under pressure

DEFINITION

Classification: 208/341

(under subclass 340) Processes wherein a gas mineral oil vapor mixture is contacted with a liquid (lean absorbent) which takes up or absorbs the mineral oil vapors therefrom (becoming an enriched or rich absorbent) combined with a specific step of vaporization to separate the mineral oil from the rich absorbent.

SEE OR SEARCH THIS CLASS, SUBCLASS:

347+, for processes of distilling mineral oil.