MIXING OF PARTICLES IN APPARATUSES
WITH A CIRCULATING FLUIDIZED BED

Yu. S. Teplitskii, V. I. Kovenskii,
E. F. Nogotov, and V. A. Borodulya

UDC 533.6

A phenomenological model of mixing of particles in a circulating 
fluidized bed has been formulated; a distinctive feature of the model 
is allowance for convective particle fluxes in the radial direction 
that ensure a substantial decrease observed in practice in the concentration 
of the particles over the riser's height. As a result of a comparison 
of experimental and calculated mixing curves it has been established 
that the value of the coefficient of radial dispersion of the particles 
lies in the interval 0.0006-0.006 m2/sec.

A. V. Luikov Heat and Mass Transfer Institute, National 
Academy of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, 
Belarus; email: kvi@hmti.ac.by. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 77, No. 6, pp. 148-158, November-December, 2004. 
Original article submitted March 16, 2004.