Patent ID: 6699444
Filing Date: 2004-03-02
Classification: F23C,F23L

Abstract:
A fluidized bed reactor comprising:at least one furnace section delimited by side walls and a bottom grid, said at least one furnace section provided for containing a bed of fluidized solid particles therein; and supplying means for introducing a gas into said at least one furnace section at a level above said bottom grid, said supplying means comprising (i) a gas source chamber, (ii) at least one opening in at least one of said side walls at a level above said bottom grid, and (iii) at least one conduit, having a first end connected to said at least one opening at a first vertical level l1 and a second end in communication with said gas source chamber, for introducing gas from said gas source chamber to said at least one furnace section, said at least one conduit having a bend between said first end and said second end thereof and extending upward from the first vertical level l1 to a second vertical level l2, said at least one conduit comprising a solid flow preventing element for preventing solid particles from flowing backward from said at least one furnace section into said at least one conduit.