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- W43996822 abstract "A 15.36-cm inside diameter (ID) visually observable fluidized bed, which can be sampled directly and operated under batch conditions with an agglomerating bed material, was used to study thermally caused agglomeration. Polyolefin particles with a softening temperature of 122/sup 0/C and melting temperature of 130/sup 0/C, in sizes ranging from 850 to 50 ..mu..m were chosen as bed materials. The following types of gas distributors were used: (1) A conical porous plate with a jet at its center; and (2) A conical porous plate with a hot temperature jet at the center and an annular jet operated with gas at lower temperature and velocity than the centered jet. The rate and extent of agglomeration were obtained using different gas distributors. The amount of agglomerates generated increased with residence time, auxiliary air, and jet air temperatures. At sufficiently high jet temperatures, with a conical fluidizing gas distributor, many more agglomerates were obtained in comparison with a similar run with a flat porous plate distributor. High jet and high auxiliary air temperatures, and lower jet velocities favor the formation of agglomerates. With the composite jet distributor, higher jet temperatures and more agglomerates without formation of sinters can be obtained than with amore » simple porous cone and jet at the middle. The set of operating conditions must be properly chosen; otherwise agglomeration can lead to excessive segregation, sintering, and finally defluidization. 4 refs., 10 figs., 1 tab.« less" @default.
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- W43996822 date "1985-01-01" @default.
- W43996822 modified "2023-09-27" @default.
- W43996822 title "Effect of gas distributors on the agglomeration process in fluidized beds" @default.
- W43996822 hasPublicationYear "1985" @default.
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