ON TEMPERATURE INHOMOGENEITY OF A REACTOR WITH AN ELECTROTHERMAL FLUIDIZED BED: CALCULATION OF A TEMPERATURE FIELD WITH ACCOUNT FOR JOULE HEAT SOURCES

The calculation of a temperature field in a bench-scale reactor with direct electric heating of a fluidized bed de-
signed for the synthesis and heat treatment of metal ceramic and carbon–graphite materials. The maximum tem-
perature difference in the working zone of the reactor with a diameter of ≈100 mm can reach 450 ^o C at a nominal
temperature of 1400–1500 ^o C. Such inhomogeneity is not typical of standard fluidized beds heated by an external
heater. The problem of inhomogeneity of the temperature field in the reactor with direct electric heating is related
to a significant localization of the current density and heat sources. Analysis has been made of the dependence of
temperature difference on the position of the central electrode. Measures have been proposed for the improvement
of the temperature field homogeneity in an electrothermal fluidized bed

Author:  O. S. Rabinovich, A. I. Malinovskii, A. A. Mikhailov
Keywords:  electrothermal fluidized bed, synthesis and heat treatment of materials, electric heating, temperature field, homogeneity, heterogeneous system, modeling
Page:  1429