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Mass transfer intensification between fluidizing gas and Geldart-B nonmagnetizable particles in magnetized fluidized bed
AIChE Journal ( IF 3.7 ) Pub Date : 2021-08-20 , DOI: 10.1002/aic.17407
Jiao Zhou 1 , Weikang Hao 2, 3 , Quanhong Zhu 3, 4
Affiliation  

This work aimed to intensify the mass transfer between fluidizing gas and Geldart-B nonmagnetizable particles by simultaneously introducing magnetizable particles and applying the magnetic field. The mere addition of magnetizable particles hardly affected the interphase mass transfer. Moreover, such mass transfer was not improved by the subsequent application of the magnetic field under the magnetization-LAST operation mode. However, the mass transfer was significantly enhanced by the magnetic field in the magnetic stabilization and transition flow regimes under the magnetization-FIRST operation mode. Apparently, the mass transfer intensification depended not only on the magnetic field intensify (H) but also on the operation mode. The gas–solid contact performance in the magnetic stabilization flow regime was always comparable to that in fixed beds. Hence, further increases in H could not raise the magnitude of intensification but only increase the operating range and stability of the magnetic stabilization, which was in metastable equilibrium.

中文翻译:

磁化流化床中流化气体与Geldart-B非磁化颗粒之间的传质强化

这项工作旨在通过同时引入可磁化颗粒和施加磁场来加强流化气体和 Geldart-B 不可磁化颗粒之间的传质。仅添加可磁化颗粒几乎不影响相间传质。此外,在磁化-LAST 操作模式下随后施加磁场并没有改善这种传质。然而,在磁化优先操作模式下,磁场在磁稳定和过渡流态中显着增强了传质。显然,传质强化不仅取决于磁场的强化(H) 而且还关乎操作模式。磁稳定流态中的气固接触性能始终与固定床中的气固接触性能相当。因此,H的进一步增加并不能提高强化的幅度,而只会增加处于亚稳态平衡的磁稳定的工作范围和稳定性。
更新日期:2021-10-09
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