05632867 is referenced by 5 patents and cites 17 patents.

In a solvent recovery plant including a recovery or distillation tower from which solvent product is recovered overhead, an isothermal separator, preferably a cyclone, 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 and mixed with the overhead product to bring its temperature down to close to the dew point of the solvent vapor. In this way, flooding of the uppermost tower trays and distillation of oil overhead can be overcome.

Title
Recovering a relatively volatile component of a solution from a less volatile component, e.g. as in solvent recovery
Application Number
8/325456
Publication Number
5632867
Application Date
February 27, 1995
Publication Date
May 27, 1997
Inventor
Adrianus Welmers
Mendham
NJ, US
James D Eagan
Woking
GB
John J Dugan
Sarnia
CA
Michael B Davis
Morristown
NJ, US
Agent
James H Takemoto
Joseph J Allocca
Assignee
Exxon Research and Engineering Company
NJ, US
IPC
B01D 3/00
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