ANALYSIS OF THE BOUNDARY CONDITIONS
OF THE COMPLEX MODEL OF MASS EXCHANGE
IN RECTIFICATION PROCESSES

V. N. Pavlechko

UDC 66.048.375

Boundary conditions of applicability of the complex mass-exchange 
model to forward, backward, and cross motions of the vapor and liquid 
phases in rectification have been found. Four variants of mass exchange 
which are the limits of the complex model have been considered. The 
limiting values of the distances h and h1 from 
the site of injection of the phases at which the compositions in ideal 
and real plates are equalized have been computed. The relations between 
the basic technological parameters of the rectification process under 
the boundary conditions have been obtained.

Belarusian State Technological University, Minsk, Belarus. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, No. 2, pp. 
104-110, March-April, 2003. Original article submitted October 
17, 2002.