Abstract:
A fluidization column with auxiliary gas lift mixing device to promote uniformity in a fluidized bed of particles with a range of particle density or particle size, said gas lift comprising a riser pipe and a bell inside which opens a duct for supplying, from outside the column, variable gas feed to the riser pipe, said bell being arranged in the fluidized bed with the lower side of the bell being about one centimeter above the column seive plate, said bell being open on the lower side, the bell upper side being connected to the lower end of the riser pipe.