US PATENT SUBCLASS 95 / 190
.~.~.~ By liquid-liquid extraction or formation of azeotrope

Current as of: June, 1999
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95 /   HD   GAS SEPARATION: PROCESSES

149  DF  LIQUID CONTACTING (E.G., SORPTION, SCRUBBING, ETC.) {20}
187  DF  .~ And recycle or reuse of contact liquid for further contact {6}
188  DF  .~.~ After separation of liquid from contact liquid {5}
190.~.~.~ By liquid-liquid extraction or formation of azeotrope

DEFINITION

Classification: 95/190

By liquid-liquid extraction or formation of azeotrope:

(under subclass 188) Process in which (a) a liquid extractant

is mixed with the contact liquid in order to cause separation of a solute from the contact liquid and then the liquid extractant with the removed solute is separated from the contact liquid or (b) a compound that forms a mixture of constant boiling point with a solute in the contact liquid is added to the contact liquid and then the azeotropic mixture is separated from the contact liquid.

SEE OR SEARCH CLASS

210, Liquid Purification or Separation,

634, for processes, per se, in which a dissolved or suspended constituent of a liquid is preferentially dissolved or dispersed into a second liquid.