Abstract:
Dispositif de mélange de fluides pour un réacteur catalytique (1) à écoulement descendant, ledit dispositif comprenant : - au moins un moyen de collecte (5) sensiblement horizontal pourvu d'une conduite de collecte (7) sensiblement verticale pour recevoir les fluides collectés par ledit moyen de collecte (5); - au moins un moyen d'injection (8) d'un fluide de trempe débouchant dans ladite conduite de collecte (7); - une chambre de mélange (9) située en aval du moyen de collecte (5) dans le sens de circulation des fluides, ladite chambre comprenant une extrémité d'entrée directement reliée à ladite conduite de collecte (7) et une extrémité de sortie (10) pour évacuer les fluides; et - un plateau de pré-distribution (11) comportant une pluralité de perforation et comprenant au moins une cheminée (13), ledit plateau étant situé en aval de ladite chambre de mélange (9) dans le sens de circulation des fluides; caractérisé en ce que ladite chambre de mélange (9) est de section en parallélogramme et en ce qu'elle comprend au moins un moyen de déviation (15) sur au moins une des quatre parois internes de ladite chambre de mélange (9) de section en parallélogramme.
Abstract:
The present invention relates to a gas-redirecting device (100) presenting an upper plane and a plurality of gas-redirecting tubes (3) comprising an inlet end and an outlet end. For each gas-redirecting tube, the orthogonal projections of the inlet end and the outlet end onto the upper plane have an over-lapping area of at most 50 % of the total area of the upper plane covered by the orthogonal projections. The present invention also relates to a liquid-gas contacting column (201) comprising such a gas-redirecting device (100), a floating support comprising such a liquid-gas contacting column, at least two packed beds (210, 220) and a method for improving the efficiency of a liquid-gas contacting column which is based on redirecting the gas from a wetted zone of a lower packed bed to a wetted zone of the higher packed bed, the liquid load through the wetted zone of the lower packed bed is different from the liquid load through the wetted zone of the higher packed bed.
Abstract:
The present invention relates to a column for exchange of mass, and where appropriate heat, between a gas and a liquid. The column comprises at least one collection tray and a liquid distribution system (5, 6) arranged between two packed beds (7), and gas and liquid separation means (8). The present invention proposes to arrange gas and liquid separation means (8) between the collection tray (4) and the liquid distribution means (5, 6).
Abstract:
A device for mixing and distributing fluids for a descending flow catalytic reactor, said device comprising: - a collecting area comprising at least one collecting means; - at least one substantially vertical collecting pipe suitable for receiving a reaction fluid collected by said collecting means and at least one injection means; - a mixing area; - a distribution area comprising a distribution plate supporting a plurality of ducts; characterised in that said mixing area is located at the same level as the distribution area, said mixing and distribution areas being delimited by at least one annular wall comprising at least one lateral passage section suitable for the passage of fluids from said mixing area to said distribution area.
Abstract:
The present invention relates to a column for heat and/or mass exchange between a gas and a liquid. The column comprises at least one collection tray (1), at least one packed bed, and means for mixing a gas flow (7, 8). According to the invention, the means for mixing a gas flow are positioned underneath the collection tray (1) and above the packing.