HEAT AND MASS EXCHANGE IN FILMS
OF A REACTING MIXTURE AND A COOLING
LIQUID UNDER EXOTHERMIC-REACTION CONDITIONS

L. P. Kholpanov and S. E. Zakiev

UDC 541.64:547(256.2+313)

Conjugate turbulent heat and mass exchange in fast exothermic 
reactions in thin films has been investigated with allowance for the 
change in the pressure. A modification of the equal-flow-rate method, 
the most natural for problems of such a kind, has been constructed. 
Its distinctive feature is that it is constructed on formal passage 
to a rectangular domain of variation in variables. The modification 
obtained has been tested on the problem solved earlier by the well-known 
equal-flow-rate method. Despite the fact that the proposed mathematical 
model and the procedure of its investigation enjoy rather wide application, 
in the present work, it is oriented toward the cationic liquid-phase 
polymerization of isobutylene. The local concentration distributions 
of the monomer and the catalyst and the temperature distributions 
have been obtained in numerical investigations. The reaction and cooling 
zones have been singled out; it has been recorded that the process 
of the most active chemical transformation is localized by the narrow 
zone of entry into the film.

Institute of Problems of Chemical Physics, Russian Academy of Sciences, 
Chernogolovka, Moscow Region, 142432, Russia; email: kholp@icp.ac.ru and 
zakievs@icp.ac.ru. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 81, No. 3, pp. 450-463, May-June, 2008. Original article 
submitted November 2, 2006.