(under subclass 308) Processes including recovery of liquid mineral oils, e.g., gasoline, from natural gases or from uncondensed gas-vapor mixtures obtained from a mineral oil conversion operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
95+, and particularly subclasses 100+ for mineral oil conversion processes combined with the subsequent separation of the vapor and liquid products.
310, for processes of recovering mineral oils from gas or vapor involving the use of solid adsorbents.
SEE OR SEARCH CLASS
34, Drying and Gas or Vapor Contact With Solids,
72+, for apparatus there provided for combined with means to recover vapors or other substances from gases. 95, Gas Separation: Processes, for processes for separating gases from mixtures of gases, liquids or solids. This and the indented subclasses (340+) provide for processes wherein a mineral oil is separated from a gas or vapor combined with the recovery of the mineral oil as a product. Processes which involve a gas separation procedure classifiable in Class 95 followed by the recovery of a mineral oil by name only, e.g., reciting only rectification, vacuum pressure or flash distillation, are classified in Class 95. Processes wherein the mineral oil recovery step includes any details thereof, or includes some subsequent treatment of the separated mineral oil are classified in Class 208.
62, Refrigeration, particularly
600+, 93+ and 272+ for processes and apparatus for separating vapors from gases by refrigeration.
261, Gas and Liquid Contact Apparatus, appropriate subclasses, for gas scrubbing apparatus.
423, Chemistry of Inorganic Compounds,
210+, for purifying or separating gases by a chemical reaction.
585, Chemistry of Hydrocarbon Compounds, especially
331+, 502+, and 709+ for condensation reactions of hydrocarbon gases to produce oily liquids.
