Abstract
The effect of condensation of mixed vapors on heat and mass transfer in binary distillation was studied theoretically and experimentally for the introduction of highly subcooled reflux below its bubble point.
A theoretical approach is made to the interfacial velocities caused by condensation of mixed vapors in contact with subcooled liquids.
Measurements of heat and mass fluxes are made for binary distillation of the methanol-water system at total reflux under subcooled conditions by a vertical flat-plate wetted-wall column and the data are compared with the prediction by laminar boundary layer theory.
On the basis of these experimental results, simulation of heat and mass transfer is made, and the results are compared with the observed data. A new method of prediction of HTU is proposed for binary distillation under introduction of subcooled external reflux.
