ON THE THEORY OF NONLINEAR MASS-TRANSFER IN SYSTEMS WITH INTENSIVE INTERPHASE MASS-TRANSFER

The paper proposes theoretical analysis of the non-linear mass transfe r theory approximations in systems with intensive interphase mass tran sfer. It is shown that the theory is valid at the constant values of t he density, viscosity and the diffusion constant, i.e. at the conditio ns of low concentrations of the transferred substance. Non-linear effe cts due to concentration dependencies of these parameters at high conc entrations are superposed with the non-linear effects due to high conc entration gradients. A linear approximation is suggested for these dep endencies. This approximation shows itself good enough (satisfying acc uracy) for describing the wide range of cases of intensive interphase mass transfer.