Numerical Simulation of the Effect of Bed Height Diameter Ratio on Gas–Solid Flow Characteristics in a Side Stirred Fluidized Bed

Fluidized bed reactor has become an important branch of non-blast furnace ironmaking due to its high heat and mass transfer efficiency, simple equipment structure, and low cost. In view of the uneven distribution of gas–solid two-phase in the traditional fluidized bed fluidization process, this paper puts forward a new idea that side stirring is applied to the fluidization iron making process to inhibit the sticking. The bed height diameter ratio is a structural factor which has great influence on the hydrodynamic performance of fluidized bed. In this paper, the three-dimensional numerical simulation of gas–solid fluidized bed is carried out by using Eulerian–Eulerian two-fluid model under the same inner diameter of fluidized bed reactor to study the effect of bed height diameter ratio on two-phase flow in gas–solid fluidized bed.