B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 8/40 (2006.01) B01J 8/18 (2006.01) B01J 8/24 (2006.01) B01J 8/26 (2006.01) B01J 8/38 (2006.01) F22B 31/00 (2006.01) F23C 10/28 (2006.01) F28D 13/00 (2006.01) F28F 13/10 (2006.01)
Patent
CA 2308500
A method of and apparatus for controlling heat transfer in a fluidized bed reactor having a heat transfer chamber (312) with a bed (314) of solid particles therein, means (320, 322) for introducing fluidizing gas into the heat transfer chamber for fluidizing the bed of solid particles therein and heat transfer surfaces (316) in contact with the bed of solid particles in the heat transfer chamber. Heat is transferred to said heat transfer surfaces from the solid particles. The fluidization of the bed of solid particles is varied according to a periodical function, e.g. by control means (34) periodically varying the flow velocity of fluidizing gas being introduced into the heat transfer chamber. Thereby the instantaneous heat transfer, as well as, the effective heat transfer from solid particles to the heat transfer surfaces may be controlled.
L'invention concerne un procédé et un dispositif de régulation du transfert thermique dans un réacteur à lit fluidisé comportant une chambre (312) de transfert thermique renfermant un lit (314) de particules solides, des éléments (320, 322) permettant d'introduire un gaz de fluidisation dans la chambre de transfert thermique pour fluidiser le lit de particules solides, et des surfaces (316) de transfert thermique en contact avec le lit de particules solides dans la chambre de transfert thermique. La chaleur est transférée auxdites surfaces de transfert thermique à partir des particules solides. On fait varier la fluidisation du lit de particules solides selon un fonction périodique, notamment, grâce à un élément de régulation (34) modifiant périodiquement le débit du gaz de fluidisation introduit dans la chambre de transfert thermique. Il est ainsi possible de réguler aussi bien le transfert thermique instantané, que le transfert thermique efficace des particules solides aux surfaces de transfert thermique.
Foster Wheeler Energia Oy
Gowling Lafleur Henderson Llp
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