Fluid catalytic cracking process and apparatus with...

B - Operations – Transporting – 04 – C

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Details

B04C 5/08 (2006.01) B01D 45/12 (2006.01) B01J 8/00 (2006.01) B04C 5/081 (2006.01) B04C 5/14 (2006.01) B04C 5/187 (2006.01) B04C 5/28 (2006.01) C10G 11/18 (2006.01)

Patent

CA 2184613

Horizontal, small diameter cyclones are disclosed. Gas and fines are introduced via an inlet (310) tangentially around a clean vapor outlet tube (314) in a cylindrical cyclone (300). A vortex of solids and some gas pass into a contiguous and axially aligned cylindrical vortex containment body (410) from which solids are withdrawn via a horizontal slot (460). Removal of particles <5micrometers is enhanced. An FCC process uses the cyclones as a third stage separator. An alternative design uses a half pipe extension (430) on the solids' outlet to confine the vortex of solids and gas.

Sont décrits des séparateurs à cyclone horizontaux et de faible diamètre. Du gaz et des fines sont introduits par l'intermédiaire d'une admission (310) tangentiellement autour d'un tube de sortie de vapeur propre (314) dans un séparateur à cyclone cylindrique (300). Un tourbillon de particules solides et d'une certaine quantité de gaz passe dans un élément cylindrique de confinement de tourbillon (410) contigu et axialement aligné, à partir duquel les particules solides sont extraites par l'intermédiaire d'une fente horizontale (460). L'élimination des particules inférieures à 5 microns est améliorée. Un craquage catalytique à lit fluide utilise les cyclones comme séparateur de troisième étage. Une variante met en oeuvre une rallonge demi-tube (430) sur la sortie des particules solides pour confiner le tourbillon de ces dernières et du gaz.

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