Slurry hydrocarbon synthesis with reduced catalyst attrition...

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 1/04 (2006.01) B01J 8/22 (2006.01) B01J 8/44 (2006.01) C07C 1/06 (2006.01) C10G 2/00 (2006.01)

Patent

CA 2304955

A slurry hydrocarbon synthesis process with reduced catalyst attrition is achieved by injecting a synthesis gas comprising a mixture of H2 and CO up into the reactive slurry with a gas distribution grid (106) having gas injectors (10) horizontally arrayed across, and vertically extending through, an otherwise gas and liquid impervious plate (32). The injectors (10) have a throat (20) with a gas pressure reducing orifice (12) at one end, which is the bottom and gas entrance end, and the other end opening into an open cone (30) in which the uprising gas contacts the slurry. Flow diverting means in the injectors prevents slurry from entering the throat (20) and being attrited. The gas injectors do not protrude above the top surface of the plate and flat space is eliminated by means such as angular fillers (94), to prevent solids accumulation top of the tray.

Ce procédé de synthèse d'hydrocarbures en suspension, avec réduction de l'attrition du catalyseur, consiste à injecter un gaz de synthèse comprenant un mélange H2 et CO dans la suspension réactive avec une grille de distribution de gaz (106) comportant des injecteurs de gaz (10) alignés horizontalement sur un plateau (32) imperméable aux gaz et aux liquides et s'étendant verticalement à travers ce plateau. Des injecteurs (10) présentent un étranglement (20) avec un orifice (12) de réduction de la pression des gaz à l'une des extrémités, qui est l'extrémité inférieure d'entrée des gaz, l'autre extrémité débouchant dans un cône ouvert (30) dans lequel les gaz montants entrent en contact avec la suspension. Un moyen de déviation du flux placé dans les injecteurs empêche la boue d'entrer par l'étranglement (20) et d'y subir une attrition. Les injecteurs de gaz n'émergent pas de la surface supérieure du plateau et tout espace plat est éliminé au moyen de charges angulaires (94) pour empêcher l'accumulation des solides au sommet du plateau.

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