FLUIDISED BED DEVICE WITH QUICK FLUIDISATION AND SATURATED FLOW OF CIRCULATING SOLIDS

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The invention relates to a reactor (1) for fast fluidized bed comprising an enclosure (10) substantially cylindrical, a top portion (11) connecting to the inlet of a cyclone (2) solids separation and a bottom portion (12) for connecting to a duct (4) solids outlet of said cyclone. According to the invention, said enclosure (10) is flared, to inclined walls, over its entire height, its lower section is in the upper portion and said enclosure (10) includes profiles of re-mixture (13) in the form of internal annular ribs distributed over at least part of its height.