The movement rule of particles inside the fluidized bed reactor is a complex heat and mass transmission process that includes many phases and components. For the purpose of probing into the properties of granule flow and the heat transfer action among phases inside fluidized bed reaction devices, The academic circle’s persons have carried out very many research works. In this article, on the basis of the mathematical model of dense gas-solid two-phase multiscale flow-reaction, the fluidization reaction is considered by us under the supposed conditions that influence factors include particle mass, momentum, temperature, energy and so on, we have put forward the related control equations, and we have chosen the Syamlal – O’Brien drag model for depicting the fluid drag force which acts on the particles. The doing of this is to carry out a numerical simulation work of the two-phase flow motion of two-component particles inside a gas-solid two-phase system.The experiment results showed that after we carry out the two-dimensional simulation of the gas-solid two-phase and two-component particle flow in the fluidized bed reactor, the distribution of particles in the Syamlal-O’Brien model is comparatively even on the whole bed. Furthermore, the particle density in the vicinity of the wall was about the value 4.291E+9. When we carry out examination of the particle Nusselt number at different time points, as the flow process goes forward, the whole particle Nusselt number is approximately limited within the scope of 0 to 0.7. This shows that the heat transfer capability within the fluidized-bed reactor is more uniform. In addition, researchers have found that the volumetric mass-transfer coefficients of gas and solid phases which are in the fluidized bed increase when initial gas velocity becomes larger, and decrease when the mass fraction of solid particles becomes higher.
