Interpretation of the difference between the work of separation determined by the separation potential and the thermodynamically estimated work of isobaric-isothermal mixing

Abstract

The previously described scheme of a symmetrical cascade consisting of two equivalent sections and several steps of equilibrium (quasi-static) separation of components of an ideal gas solution was used to calculate gas mixture pressures at cascade stages. It was shown that, at equal concentrations of fractions feeding steps, pressures of mixing fractions were different. The difference between the work of separation determined using the separation potential and the thermodynamically estimated work of mixing is interpreted as a consequence of an increase in entropy during fraction mixing in the corresponding units of a symmetrical cascade.