Patent ID: 6197265
Filing Date: 2001-03-06
Classification: B01J,F27B

Abstract:
A gas distribution system for a two-zone fluidized bed reactor comprising:an assembly of interlockable grid modules comprised of refractory material for introducing two types of gas at different levels in the fluidized bed;wherein each grid module comprisesa) a body comprisinga first planar top surface, a second planar bottom surface, at least 3 side surfaces,b) at least one essentially horizontal passageway, andc) at least one essentially vertical passagewaya gas manifold comprising a plurality of perimeter modules comprised of refractory material which surround the assembly of grid modules and supplies the grid modules with a first type of gas; anda structure for supporting the assembly of grid modules and perimeter modules and for supplying the grid modules with a second type of gas.