Overview of fluidization science and fluidized bed technologies

Abstract: Fluidization is an engineering principle in which particulate matter in a solid-like condition is brought into a fluid-like condition. It has been applied for a variety of purposes over the decades. In this overview, the interesting and important aspects of fluidization are first introduced conceptually, then defined mathematically. The different modes of fluidization, regime transition, fluid-mechanical simulation and historical developments both in industry and in science are then discussed. Stress is placed on combustion and gasification issues. By introducing the three-stage law for the progress of science and other philosophical views of the Japanese physicist Mitsuo Taketani, the 60 years of fluidization science are revisited to assess the future. There is also discussion of the importance of good industry–academia collaboration to promote innovations.

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