改良型平衡蒸溜器について

抄録

A new apparatus for determing vapor-liquid equilibria of miscible mixtures is designed and is illustrated in Fig. 1. It is a modification of the Othmer's still, but differs practically from this in that the volume of liquid in the overflow vessel below the condenser can be changed in six steps. This feature enables us to take six point-measurements, at the maximum of vapor-liquid equilibrium from one single feed of original mixtures, as shown in Table 2 and Fig. 3.
To determine the dependability of the still, two kinds of mixtures are selected, one of which, i.e. methylethylketone-toluene, nearly obeys Raoult's law, while the other, i.e. methanol-toluene, greatly deviates from the ideal behavior. The agreement of the new data with those in literature shows that the new equilibrium still yields reliable results.