Process and apparatus for separating solid substances from...

B - Operations – Transporting – 01 – D

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Details

B01D 45/12 (2006.01) B01D 45/16 (2006.01) B01J 8/00 (2006.01) B04C 5/28 (2006.01) C10G 11/18 (2006.01) F23C 10/08 (2006.01)

Patent

CA 2399422

The present invention relates to a method and apparatus for separating particulate matter from a gaseous stream. According to the method, the gaseous stream containing the suspended particulates is passed into a separator apparatus which includes at least two multiple-inlet-multicyclones (16A-16C), wherein the particulates are separated from the gas by centrifugal force. According to the invention, a separator apparatus is employed wherein at least two (16A-16C) of the multiple-inlet cyclones are adapted to operate in parallel so as to form a multiple-inlet-multicyclone apparatus. The cyclone assembly according to the invention may be used as, e.g, the primary separator of an FCC unit, but more advantageously it serves as the secondary or tertiary separator of an FCC unit to remove "fines" from the flue gases of the preceding separation stages.

L'invention concerne un procédé et un dispositif de séparation d'une matière particulaire à partir d'un flux gazeux. Ce procédé consiste à faire passer le flux gazeux contenant les matières particulaires en suspension, dans un séparateur comportant au moins deux multicyclones (16A-16C) à plusieurs orifices d'entrée, et à séparer les matières particulaires, à partir du flux gazeux, au moyen de la force centrifuge. Selon l'invention, on utilise un séparateur dans lequel on a monté au moins deux cyclones (16A-16C) à plusieurs orifices d'entrée, conçus pour fonctionner en parallèle de manière à former un multicyclone à plusieurs orifices d'entrée. Cet ensemble cyclones peut servir en tant que premier séparateur d'une unité de craquage catalytique fluide (FCC), par exemple, mais il peut avantageusement servir en tant que séparateur secondaire ou tertiaire d'une unité FCC, aux fins d'enlèvement des fines à partir de flux gazeux de précédentes étapes de séparation.

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