US PATENT SUBCLASS 585 / 441
.~.~.~ Plural stage or with plural separation procedures

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

400  DF  AROMATIC COMPOUND SYNTHESIS {15}
435  DF  .~ Having alkenyl moiety, e.g., styrene, etc. {4}
440  DF  .~.~ By dehydrogenation {4}
441.~.~.~ Plural stage or with plural separation procedures

DEFINITION

Classification: 585/441

Plural stage or with plural separation procedures:

(under subclass 440) Subject matter wherein the effluent from a dehydrogenation reaction is sent to another dehydrogenation reaction or in which two or more separation steps are performed.

(1) Note. One or more of the separation steps may be preliminary to the reaction.

(2) Note. Frequently a compound separated from the effluent is recycled.

SEE OR SEARCH THIS CLASS, SUBCLASS:

800+, and the notes thereto for separation procedures, per

se, applied to hydrocarbon materials.