Gasdynamic and Thermal Effects of the Synthesis of Micron-Sized Particles by the Carbon Combustion Method in Straight-Flow and Three-Zone Reactorsстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 июня 2022 г.
Аннотация:Abstract⎯An axisymmetric two-temperature model for analyzing the synthesis of multiple oxides bythe carbon combustion method is developed. The system of governing equations includes the mass,momentum, and energy conservation laws for the gas and solid phases in straight-flow and three-zonereactors. The results of an investigation of sharp temperature rise, or “wrong-way” reactor behavior,during the synthesis of micron-sized barium titanate powders with the consideration of thermal andmass dispersion are presented. The governing equations, together with the similarity parameters in thedimensionless form, are applied to numerical simulation of the effect of both gasdynamic and interphaseresistance and axial and transverse dispersion during the synthesis of micron-sized barium titanateparticles in straight-flow and three-zone reactors. It is concluded that the three-zone reactor hasadvantages in modeling the synthesis of micron-sized particles in the regimes of wrong-way behaviorof the straight-flow reactor. The results of the calculations of the straight-flow and three-zone reactorsare compared at the same values of dispersion, the pore sinuosity coefficient, the particle diameter,and the local Peclet number.