Gas and solids reducing slurry downcomer

C - Chemistry – Metallurgy – 10 – G

Patent

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Details

C10G 2/00 (2006.01) B01J 8/00 (2006.01) B01J 8/22 (2006.01)

Patent

CA 2286847

Particulate solids and gas are removed from a three phase hydrocarbon synthesis slurry of solid catalyst particles, gas and liquid, by successively passing slurry from a slurry body through solids and gas disengaging zones in fluid communication, with the solids disengaging zone upstream of the gas disengaging zone. This is accomplished using a solids and gas disengaging downcomer immersed in the slurry wherein solids are disengaged in a quiescent zone adjacent the slurry body, from which the solids reduced slurry passes through an enclosed cup in which gas is disengaged and removed. The bottom of the cup terminates in a downwardly depending downcomer which hydraulically feeds the densified, solids and gas reduced slurry to the bottom of the reactor or to filtration.

Des solides particulaires et des gaz sont éliminés d'une suspension de synthèse d'hydrocarbures à trois phases, constituée de particules catalytiques solides, de gaz et de liquide, par passage successif de la suspension, issue d'une masse de suspension, à travers des zones de séparation de solides et de gaz qui sont en communication fluidique, la zone de séparation de solides étant située en amont de la zone de séparation de gaz. On utilise à cet effet un déversoir de séparation de solides et de gaz immergé dans la suspension, dans lequel les solides sont séparés dans une zone calme adjacente à la masse de suspension, depuis laquelle la suspension à teneur réduite en solides passe par une cuvette fermée dans laquelle le gaz est séparé et éliminé. Le fond de la cuvette se termine par un déversoir partant vers le bas, lequel achemine par voie hydraulique, vers le fond du réacteur ou la zone de filtration, la suspension densifiée à teneur réduite en solides et en gaz.

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