F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
F27B 15/10 (2006.01) B01J 8/18 (2006.01) B01J 8/26 (2006.01) B01J 8/34 (2006.01) B01J 8/36 (2006.01) B01J 8/44 (2006.01) F27B 15/02 (2006.01)
Patent
CA 2303111
A fluidized bed furnace in which the height difference between the fluidized beds of the front and rear divided chambers is appropriate and does not cause back mixing. When the vertical position of the communication port (9) for moving the material from the upstream-side divided chamber to the downstream- side divided chamber is 1/4 the height of a fluidized bed, the length of the communication port (9) is more than 100 mm, and the gas nozzle is directed almost vertically upward, arrangements are made so that the distance (x) from the inlet of the communication port (9) to the end face of the upstream-side nozzle is larger than 150 mm, that the distance (x) from the outlet of the communication port (9) to the end face of the downstream-side nozzle is larger than 50 mm, and that in both the upstream-side and downstream-side closed portions of the communication port (9), an angle formed with respect to the horizontal plane by a line connecting the corner of the upper surface of the communication port and the gas blowout opening is set larger than the angle of repose of the powder material.
L'invention concerne un four à lit fluidisé dans lequel la différence de hauteur entre les lits fluidisés des chambres séparées avant et arrière est adéquate et n'entraîne pas de mélange à contre-courant. La distance verticale jusqu'au passage (9) communiquant permettant de déplacer la matière de la chambre amont à la chambre aval correspond à 1/4 de la hauteur d'un lit fluidisé, la longueur du passage (9) communiquant est supérieure à 100 mm et la buse d'arrivée du gaz est dirigée vers le haut, presque à la verticale. La structure est conçue de manière que la distance (x) séparant l'entrée du passage (9) de communication de la face terminale de la buse amont est supérieure à 150 mm et que dans les parties closes amont et aval du passage (9) communiquant, un angle formé par rapport au plan horizontal par une ligne reliant le bord la surface supérieure du passage communiquant à l'ouverture de sortie du gaz, est plus important que l'angle formé par la pente de la matière en poudre déposée.
Kazari Masahide
Kishimoto Mitsuharu
Nomoto Hiroki
Shimizu Masaki
Tsutsumi Kazuo
Kawasaki Jukogyo Kabushiki Kaisha
Kirby Eades Gale Baker
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