Circulating fluidized bed reactor

F - Mech Eng,Light,Heat,Weapons – 22 – B

Patent

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Details

F22B 31/00 (2006.01) B01J 8/24 (2006.01) F23C 10/04 (2006.01) F23C 10/10 (2006.01)

Patent

CA 2389818

A circulating fluidized bed reactor comprising a furnace (20), defined by a substantially vertical and planar first wall (12), and a particle separator having a return duct (40) adjacent said first wall. In the lower part of the return duct is arranged a gas seal adjacent a planar tube wall, which wall is said planar wall (12) or a wall (16) defining a space in gas flow connection with the furnace. The width of the horizontal cross section of the lower part of the return duct, measured in the direction of the first wall, is larger than its depth, measured perpendicular to the width. The gas seal includes a seal structure comprising water tubes bent from said tube wall (12, 16).

L'invention porte sur un réacteur à lit fluidisé circulant comportant un four (20), délimité par une première paroi (12) sensiblement verticale et plane, et un séparateur de particules présentant un conduit de retour (40) contigu à ladite paroi. A la partie inférieure du conduit de retour se trouve un joint étanche aux gaz contigu à la paroi plane du tube, ladite paroi étant la susdite paroi plane (12) ou une paroi (16) délimitant un espace communiquant pour les gaz avec le four. La largeur de la section transversale horizontale de la partie inférieure du conduit de retour mesurée dans la direction de la première paroi est plus importante que sa profondeur mesurée perpendiculairement à ladite largeur. Le joint étanche aux gaz comporte une structure de tubes à eau recourbés à partir de ladite paroi du tube (12, 16).

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