Apparatus for countercurrent contacting of gas and solids

B - Operations – Transporting – 01 – J

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B01J 8/12 (2006.01) C10G 11/18 (2006.01) F28D 13/00 (2006.01)

Patent

CA 2506974

An apparatus (200) for the countercurrent contacting of a gas and downflowing solid particles includes a housing (205) and a plurality of baffles (100) positioned within the housing. The baffles are arranged in at least first and second vertically spaced levels in successively lower position, each of the first and second levels including a row of at least two baffles oriented parallel to one another and inclined from horizontal so as to facilitate movement of the solid particles and provide the maximum area for flow. Baffles are oriented so as to laterally shift the direction of downflowing particles transversely as the particles move from one level to the next lower level and avoid channeling of the phases. The number of baffles, length and spacing is optimized to provide maximum interfacial area for interaction between the phases.

L'invention concerne un appareil (200) servant à mettre en contact à contre-courant un gaz et des particules solides se déplaçant en un flux descendant. Cet appareil comprend une enveloppe (205) et une pluralité de chicanes (100) placées à l'intérieur de cette enveloppe. Les chicanes sont disposées à au moins un premier et un deuxième niveau espacés verticalement les uns en-dessous des autres, chacun de ces niveaux comprenant une rangée d'au moins deux chicanes parallèles inclinées par rapport à l'horizontale de manière à faciliter le déplacement des particules solides et fournir un espace maximal pour l'écoulement. Les chicanes sont orientées de façon à dévier latéralement le sens des particules transversalement lorsque celles-ci se déplacent en un flux descendant d'un niveau au niveau inférieur et de façon à éviter une formation de sillons parmi les phases. Le nombre de chicanes, leur longueur et leur espacement sont optimisés de manière à fournir une zone d'interface maximale favorisant l'interaction entre les phases.

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