Fixing device for catalyst particles

B - Operations – Transporting – 01 – J

Patent

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B01J 8/02 (2006.01)

Patent

CA 2715801

With the help of a fixing device for catalyser particles, wherein the catalyser particles are packed in a bed which can be passed through by a gas flow in the direction of gravity, it is intended to achieve a minimum specific pressure loss which will remain low even if dirt should arise from the operating process; a fixing device which has a minimum influence on the period of presence of the gas flowing through; which ensures the reliable hold-down of the catalyser particles even at high approach velocities; and which is flexible to a certain degree in order to adapt to bed changes. This is achieved by placing at least one layer of a metal braiding (10) on the packed bed (3) of the catalyser particles, and the metal braiding (10) consisting of individual metal braiding elements (11) which are firmly braided together.

L'invention concerne un dispositif de fixation pour des particules de catalyseur, sachant que les particules de catalyseur sont présentes sous la forme d'une charge en vrac qui peut être traversée par un flux de gaz dans le sens de gravité. L'invention veut obtenir une faible perte spécifique de pression, qui reste faible même en cas d'éventuels encrassements dus à l'exploitation, qui ait le moins d'influence possible sur le temps de séjour du gaz circulant, qui permette un dépôt fiable des particules de catalyseur même en cas de vitesses élevées du flux incident, et qui présente une certaine flexibilité pour pouvoir s'adapter à des modifications de la charge en vrac. A cet effet, selon l'invention, au moins une couche constituée d'une tresse métallique (10) est posée sur la charge en vrac (3) de particules de catalyseur, et la tresse métallique (10) est constituée d'éléments individuels (11) de tresse métallique qui sont fixement tressés entre eux.

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