Recovering a relatively volatile component of a solution...

Details Recovering a relatively volatile component of a solution... Recovering a relatively volatile component of a solution...

B - Operations, Transporting

01

D

B01D 3/14 (2006.01) B01D 1/30 (2006.01) B01D 3/34 (2006.01)

Patent

CA 2135284

2135284 9323131 PCTABS00028 In a solvent recovery plant comprising a recovery tower (4) from which solvent product is recovered overhead, an isothermal separator, preferably a cyclone (13), is used to separate liquid phase contaminant (i.e. oil in a lubricating oil extraction process) in overhead product and to feed the separated liquid to the recovery tower as reflux. In addition, a portion of the feed to the tower can be branched off (in branch line 10) and mixed with the overhead product (in overhead line 11), to bring its temperature down to close to the dew point of the solvent vapour. In this way, flooding of the uppermost tower trays and distillation of oil overhead can be overcome.

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