F - Mech Eng,Light,Heat,Weapons – 22 – B
Patent
F - Mech Eng,Light,Heat,Weapons
22
B
F22B 31/00 (2006.01) B01J 8/18 (2006.01)
Patent
CA 2054707
A fluidized bed gas-solids contact reactor (9), which utilizes at least one capped concentric dual-sided riser-downcomer unit (10) having a central inner riser passageway (12) and a concentric outer downcomer passageway (14). The riser-downcomer unit (10) is usually located above the fluidized bed (11), and is adapted for directing the downflowing solids back into the fluidized bed for recycle. The reactor unit inner and outer passageway surfaces include a heat exchange panel having inner (13) and outer (15) channels each containing a circulating liquid. Particulate solids from the dense phase fluidized bed are continuously circulated in dilute phase through the riser-downcomer unit passageways by a reactant gas, such as air, to exchange heat with the liquid. The particulate solids can be a catalyst or a fuel material such as coal.
Four de contact (9) gaz-solides . lit fluidis', qui consiste en au moins une unit' (10) de mont'e/descente encapsul'e . 'l'ments concentriques . deux c"t's, o- est agenc' un passage de mont'e central int'rieur (12) et un passage de descente concentrique ext'rieur (14). L'unit' de mont'e/descente (10) est g'n'ralement agenc'e en dessus du lit fluidis' (11) et redirige les solides descendants vers le lit fluidis' o- ils sont recycl's. Les surfaces des passages int'rieur et ext'rieur du r'acteur sont dot'es d'un panneau d''change de chaleur comportant une conduite interne (13) et une conduite externe (15), qui contiennent toutes deux un liquide en circulation. Un gaz r'actif, de l'air par exemple, fait circuler en continu en phase dilu'e, . travers les passages de l'unit' de mont'e/descente, les particules solides provenant du lit fluidis' . phase dense, ce qui produit un 'change de chaleur avec le liquide. Les particules solides peuvent consister en un catalyseur ou un combustible comme du charbon.
Gowling Lafleur Henderson Llp
Hri Inc.
LandOfFree
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