Process for separating a catalyst from a liquid

Details Process for separating a catalyst from a liquid Process for separating a catalyst from a liquid

B - Operations, Transporting

01

J

B01J 8/22 (2006.01)

Patent

CA 2532513

Gaseous reactants (18) are fed into a slurry bed (14) of solid catalyst particles in a liquid. The reactants react as they pass upwardly through the bed, thereby forming liquid and gaseous products. In a primary filtration stage (30), the liquid product passes through a filtering medium having filtering openings, which have a controlling dimension of x microns, so that large catalyst particles greater than x microns are removed. A primary filtrate containing near-size and fine catalyst particles is subjected to secondary filtration (64) to remove near-size particles. A cake of catalyst particles forms on the filtering medium. The passage of liquid product through the filtering medium is interrupted, and the filtering medium is backflushed by passing secondary filtrate through it in a reverse direction, to dislodge the cake from the filtering medium.

On introduit des réactifs gazeux (18) dans un lit (14) d'une suspension épaisse de particules d'un catalyseur solide dans un liquide. Les réactifs réagissent pendant leur ascension à travers le lit, formant des produits liquides et gazeux. Dans un étage de filtration primaire (30), le produit liquide traverse un milieu de filtration avec des ouvertures de filtration ayant une dimension de régulation de x microns, de façon à éliminer les grandes particules de catalyseur de plus de x microns. Un filtrat primaire qui contient des particules de catalyseur de dimensions limites et fines est soumis à une filtration secondaire (64) afin d'éliminer les particules de dimensions limites. Un gâteau de particules de catalyseur se forme sur le milieu de filtration. Le passage du produit liquide à travers le milieu de filtration est interrompu et le milieu de filtration est contrebalayé par un filtrat secondaire qui le traverse en sens inverse afin de détacher le gâteau du milieu de filtration.

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