Apparatus for reacting a gas and a particulate material in an enclosure, and method for operating said apparatus

摘要

PCT No. PCT/FR91/00325 Sec. 371 Date Dec. 12, 1991 Sec. 102(e) Date Dec. 12, 1991 PCT Filed Apr. 18, 1991 PCT Pub. No. WO91/16130 PCT Pub. Date Oct. 31, 1991.The reactor includes: a lower zone (I) having a fast circulation fluidized bed; a zone having a dense fluidized bed (13) and located adjacent to the top of the lower zone, being separated therefrom by a dividing wall, the top layer of the dense bed receiving falling particulate materials, and its bottom layer returning these materials to the lower zone (I); and a higher zone having a fast circulation fluidized bed. The invention is applicable to boilers.