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<p>The calculation of a temperature field in a bench-scale reactor with direct electric heating of a fluidized bed designed for the synthesis and heat treatment of metal ceramic and carbon–graphite materials. The maximum temperature difference in the working zone of the reactor with a diameter of ≈100 mm can reach 450°C at a nominal temperature of 1400–1500°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.</p>

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On Temperature Inhomogeneity of a Reactor with an Electrothermal Fluidized Bed: Calculation of a Temperature Field with Account for Joule Heat Sources

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • O. S. Rabinovich,
  • A. I. Malinovskii,
  • A. A. Mikhailov

摘要

The calculation of a temperature field in a bench-scale reactor with direct electric heating of a fluidized bed designed for the synthesis and heat treatment of metal ceramic and carbon–graphite materials. The maximum temperature difference in the working zone of the reactor with a diameter of ≈100 mm can reach 450°C at a nominal temperature of 1400–1500°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.