As can be seen from Fig. 3, the increase of temperature at the
top stage, for a stated solvent to feed ratio, causes the recovery to
increase and the mass fraction of heavy compounds to decrease.
This effect is analogous to the effect that would be caused by an
external reflux of extract. However, in the present case this effect
is caused by a generation of an internal reflux induced by the drastic
decrease of solubility of ethyl esters in SCCO2 at the top stage.