US PATENT SUBCLASS 208 / 342
.~.~.~ With fractional condensation prior to absorption


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

308  DF  FRACTIONATION {5}
340  DF  .~ Recovery of mineral oil from natural or converted gases {1}
341  DF  .~.~ By absorption and vaporization {4}
342.~.~.~ With fractional condensation prior to absorption


DEFINITION

Classification: 208/342

(under subclass 341) Processes wherein the initial gas-vapor mixture is cooled to condense desired fractions prior to the absorption step.

(1) Note. In the processes classified here, the fractional condensation prior to absorption is carried out to remove fractions boiling outside the range of the product desired or to recover a condensate which may be used as the lean oil in the absorption stage.