Method of and apparatus for decreasing attack of detrimental...

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

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F22B 37/00 (2006.01) B01J 8/26 (2006.01) B01J 8/38 (2006.01) F22B 31/00 (2006.01) F23C 10/00 (2006.01) F23C 10/10 (2006.01) F27B 15/02 (2006.01) F28F 19/00 (2006.01)

Patent

CA 2256893

A method of and an apparatus for decreasing attack of detrimental components of solid particle suspensions on heat transfer surfaces in heat transfer chambers in fluidized bed reactors. According to the invention there is provided a dilution chamber (16), with a bed of solid particles (16') circulating in the system therein. The dilution chamber is disposed in the particle flow upstream of the heat transfer chamber (18) for inactivating impurities, detrimental to heat transfer surfaces (46), in said solid particle flow and/or for separating impurities therefrom. Solid particles are discharged from the reactor chamber into the heat transfer chamber via the dilution chamber, for cleaning the solid flow from detrimental components.

Procédé et appareil destinés à réduire les attaques des constituants nuisibles de suspensions de particules solides sur des surfaces de transfert thermique dans des chambres de transfert thermique se trouvant dans des réacteurs à lit fluidisé. Selon l'invention, on prévoit une chambre de dilution (16) contenant un lit de particules solides (16') circulant dans le système. La chambre de dilution est disposée dans l'écoulement de particules en amont de la chambre de transfert thermique (18) afin d'inactiver les impuretés nuisibles par rapport aux surfaces de transfert thermique (46) dans ledit écoulement de particules et/ou pour séparer les impuretés de ce dernier. Les particules solides sont déchargées de la chambre de réaction dans la chambre de transfert thermique en passant par la chambre de dilution, de sorte que l'écoulement de particules solides soit nettoyé de ses constituants nuisibles.

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