US PATENT SUBCLASS 203 / 6
ADDITION OF MATERIAL TO DISTILLAND TO INHIBIT OR PREVENT REACTION OR TO STABILIZE

Current as of: June, 1999
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203 /   HD   DISTILLATION: PROCESSES, SEPARATORY

6ADDITION OF MATERIAL TO DISTILLAND TO INHIBIT OR PREVENT REACTION OR TO STABILIZE {2}
7  DF  .~> For scale inhibiting or corrosion preventing
8  DF  .~> For inhibiting or preventing a polymerization reaction {1}

DEFINITION

Classification: 203/6

(under the class definition) Processes including adding an element or a chemical compound or mixture (of substances) to

the distilland or the vapor to inhibit or prevent formation of scale on the apparatus and/or to inhibit or prevent corrosion of the apparatus and/or to inhibit or prevent an unwanted reaction of the feed, vapor, residue or condensate.

(1) Note. The addition of a scale inhibiting material to water being distilled or the addition of a corrosion inhibiting material to an acidic material being distilled or the addition of a material which inhibits the polymerization of an olefin at the temperature of the distillation are nonlimiting examples of the scope of this and indented subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

86, for a separatory distillation process including the use of a surface of a specific composition which thereby inhibits or prevents an unwanted reaction.

SEE OR SEARCH CLASS

252, Compositions, 397+, for compositions for preventing, inhibiting or reducing oxidation, chemical decomposition, or other chemical change.

260, Chemistry of Carbon Compounds, and its daughter Classes 530-570 for a nonhydrocarbon organic compound containing a stabilizer.

422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,

7+, for process of maintaining an environment nondestructive to metal.

585, Chemistry of Hydrocarbon Compounds,

1+, for a hydrocarbon compound containing a stabilizer.