Fluidized bed plant

Details Fluidized bed plant Fluidized bed plant

B - Operations, Transporting

01

J

23/423

B01J 8/34 (2006.01) B01J 8/44 (2006.01) F23C 10/20 (2006.01) F23L 9/00 (2006.01)

Patent

CA 1310808

Abstract of the Disclosure A fluidized bed plant system to carry out exothermic processes in a circulating fluidized bed and which consists of a fluidized bed reactor, a solids separator and a recycling path and which includes lines for supplying oxygen-containing primary gases through the bottom of the fluidized bed reactor, lines for supplying oxygen- containing secondary gas on a level which is at least 1 m above the reactor bottom but not in excess of 30% of the height of the reactor, and a fuel line which opens into the fluidized bed reactor between the primary and secondary gas lines. In order to ensure a satisfactory cross-mixing of oxygen-containing secondary gas and fuel, particularly in reactors having large dimensions, the plant comprises one or more displacers which cover 40 to 75% of the bottom surface of the fluidized bed reactor. The height of the displacer is not in excess of one-half of the height of the fluidized bed reactor. The displacer is so arranged that the remaining bottom surface of the fluidized bed reactor constitutes a single coherent surface. The one or more displacers is preferably square or rectangular in cross-section and may be provided with means for feeding oxygen-containing secondary gases and/or means for feeding fuel.

603745

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