B - Operations – Transporting – 04 – C
Patent
B - Operations, Transporting
04
C
B04C 5/14 (2006.01) B01J 8/00 (2006.01) B04C 5/26 (2006.01) C10G 11/18 (2006.01)
Patent
CA 2396183
A system for sealing the leg of a cyclone for separating out solids in gas/solid suspension is described. More specifically, the present invention relates to a system for sealing the legs of two stages of cyclones in series used in fluid catalytic cracking (FCC) processes, comprising a terminal configuration which makes use of a long-radius curve (31) which is devoid of moving parts, which changes the flow direction of the descending mass flow of catalyst in dense phase into a plane orthogonal to the ascending gaseous flow, which prevents the entry of gaseous phase inside the leg (24), and which promotes efficient sealing and preventing the "packing-down" of the dense bed of particulates.
L'invention concerne un système pour fermer de manière étanche la branche d'un cyclone de séparation de solides dans une suspension de gaz/solides. L'invention porte, notamment, sur un système de fermeture étanche des branches de deux étages de cyclones en série, utilisés dans des procédés de craquage catalytique, présentant une configuration terminale dans laquelle une courbe à long rayon (31) exempte de parties mobiles est employée, qui modifie la direction du débit massique descendant du catalyseur en phase dense dans un plan orthogonal par rapport au flux de gaz ascendant, ce qui empêche l'entrée de phase gazeuse dans la branche (24), favorise la fermeture étanche efficace et empêche le tassement du lit dense de particules.
Cardoso de Melo Guerra Eduardo
Dubois Aurelio Medina
Furtado Ramos Jose Geraldo
Fusco Jose Mozart
Huziwara Wilson Kenzo
Gowling Lafleur Henderson Llp
Petroleo Brasileiro S.a. - Petrobras
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