Numerical study of hydrodynamics processes fluidized bed

Abstract

Boiler units with a circulating fluidized bed (CFB) have become widespread in foreign countries, since the CFB technology has proven itself to be an effective way to burn various types of solid fuels. Traditionally, when creating domestic boilers, a normative method is used, but it does not take into account the peculiarities of the movement of the fluidized bed. The hydrodynamic characteristics of the layer have a significant impact on the design of the combustion chamber. To determine them, both mathematical and numerical modeling methods are used. As a result of mathematical calculation, the dependence of the fluidization mode on the air supply speed was revealed. Also, through numerical modeling, it was possible to establish the correspondence of the particle motion mode with the data from the mathematical model.