The utility model has the advantages of prefabricating the installation of tubes, forming standardized components, modular assembling, drilling in and welding without manual work, simple manufacture, reducing troubles in design, manufacture, and management, lowering cost of manufacture, and amplifying the handling capacity, and the utility model also has the advantages that the ideal fluidized ratio of height to diameter, the centrosymmetry tube structure, the aeration uniformity, and the good fluidized effect can all be guaranteed by only increasing the height but not the diameter of the outer cylinder.

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