US PATENT SUBCLASS 210 / 664
.~.~.~ By distilling or degassing


Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

600  DF  PROCESSES {14}
660  DF  .~ Ion exchange or selective sorption {8}
663  DF  .~.~ Including diverse separating or treating of liquid {4}
664.~.~.~ By distilling or degassing


DEFINITION

Classification: 210/664

By distilling or degassing:

(under subclass 663) Process in which a constituent is removed from the liquid by converting part of the liquid to a gaseous or vapor phase in which the gas or vapor is not sorbed nor chemically changed to a nongaseous element or compound.

(1) Note. Included are processes in which an initially dissolved gas in evolved or liquid is vaporized, leaving behind a nonvapor constituent and the vapor is then condensed.

(2) Note. The distillation or degassing treatment must be applied to the liquid undergoing treatment, not to an additional liquid (e.g., a regenerant) which may come in contact with the ion exchanger or sorbent.

SEE OR SEARCH THIS CLASS, SUBCLASS:

188, for apparatus of this class (210) combined with means to separate a gas evolved during a treating operation.

SEE OR SEARCH CLASS

95, Gas Separation: Processes,

241+, for processes to remove gas initially present in a liquid mixture. 203, Distillation: Processes, Separatory, for liquid purification involving distillation, per se.