Method and system for separating a component from a...

B - Operations – Transporting – 01 – D

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B01D 53/22 (2006.01)

Patent

CA 2497317

A method and apparatus for separating a component from a multi-component feed gas stream has a flow conduit (14) having a semi-permeable section (15) that permeates the component to be separated from feed gas stream (12). A sweep gas is provided at a first velocity on the permeate sides of flow conduit (14) and the velocity of sweep gas (13) is accelerated so that the velocity of sweep gas (13) along at least a portion of the permeate side of flow conduit (14) is greater than the first velocity. The mixture of permeate and sweep gas (13) is then decelerated by diffuser (20), thereby recovering as pressure a portion of the energy of feed gas stream (12).

L'invention concerne un procédé et un dispositif permettant de séparer un composant d'un flux de gaz d'alimentation complexe. Le dispositif décrit dans cette invention comprend un tuyau d'écoulement (14) doté d'une section semi-perméable (15) qui laisse pénétrer le composant devant être séparé du flux de gaz d'alimentation (12). Un gaz de balayage est amené à une première vitesse sur les côtés de pénétration du tuyau d'écoulement (14) et la vitesse du gaz de balayage (13) est accélérée de telle sorte que sa vitesse le long d'au moins une partie du côté de pénétration du tuyau d'écoulement (14) est supérieure à la première vitesse. Le mélange du perméat et du gaz de balayage (13) est ensuite ralenti par un diffuseur (20), ce qui permet de récupérer une partie de l'énergie du flux de gaz d'alimentation (12) en tant que pression.

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