(under subclass 308) Processes wherein a mineral oil or mineral oil containing fluid mixture is contacted with a solid material which selectively adsorbs a mineral oil fraction from the mixture.
(1) Note. Processes classified herein may involve the treatment of a liquid mineral oil in order to selectively adsorb certain fractions therefrom or the treatment of a mineral oil vapor containing gaseous mixture to adsorb the mineral oil vapors therefrom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
250, for desulfurizing processes wherein solid adsorbents are used involving solids contacting and mixing procedures.
299+, for refining processes wherein solid adsorbents are used to separate impurities.
SEE OR SEARCH CLASS 95, Gas Separation: Processes,
90+, for processes of gas separation involving solid adsorbents. This subclass (310) provides for processes wherein a mineral oil is separated from a gas or vapor by use of a solid adsorbent which also include the recovery of a mineral oil product. Processes which involve a gas separation classifiable in Class 95 followed by the recovery of a mineral oil by name only, e.g., distillation or heating, are classified in Class 95.
210, Liquid Purification or Separation, particularly
656+, and 660+ for liquid separation or purification not elsewhere provided for, using solid sorbents. Processes of fractionating mineral oil by use of adsorbents is classified in this subclass (310).
