Abstract：Gas-solid fluidized bed reactors have been widely used in the fields of oil refining and chemical engineering due to their excellent two-phase contact characteristics. However, in recent years, as the requirements of refining and chemical enterprises for target products have tended to be diversified, multiple reactions need to be completed within the same reactor. Coupled reactors employing catalyst particles with different performances are undoubtedly a good solution. This paper analyzed the application of both the fluidized bed reactors with small-difference and large-difference binary particles in the catalytic cracking process for maximizing the production of low-carbon olefins. It also compared the structures and process conditions of various binary particle system fluidized bed reactors. Finally, by combining with the results of large-scale cold model experiments, it was pointed out that the multi-zone coupled reactors with large-difference binary particles could achieve a better coupling of the flow, mass transfer, and heat transfer processes of the two reactions compared with the combined fluidized bed reactors. Additionally, attentive problems in developing the fluidized bed reactors of the binary particle system were put forward, which provided a reference for their design.
JIN Weixing,SONG Yuzhen,FAN Yiping et al. Research Progress on Fluidized Bed Reactors for Binary Particle Systems[J]. Chemical Reaction Engineering and Technology, 2025, 41(1): 24-32.
