Process and device for scrubbing acidic gases

Details Process and device for scrubbing acidic gases Process and device for scrubbing acidic gases

B - Operations, Transporting

01

D

B01D 53/50 (2006.01) B01D 53/78 (2006.01)

Patent

CA 2231432

In a process and corresponding device for scrubbing acidic gases out of flue gases using adsorbent-containing suspensions, the flue gases are conveyed into a scrubber (2) with narrowed channels (8) and accelerated, in a first stage counter to the flow of the suspension droplets and in a second stage with the flow of the suspension droplets, the suspension having already been broken down into droplets before or at the beginning of the acceleration section. Reflux of the suspension into the acceleration section is prevented by the shape of the channels (8). Flue gas and suspension droplets react and in the connecting first mist precipitator (3) the droplets are turned around 180~ in the direction of gravitational force.

L'invention concerne un procédé et un dispositif de séparation par voie humide de gaz acides contenus dans des fumées, au moyen de suspensions contenant des agents d'absorption. Selon ce procédé, les fumées sont acheminées dans un laveur (2) à canaux rétrécis (8) puis accélérées, dans un premier étage à contre-courant des gouttelettes de la suspension et dans un second étage dans le même courant que les gouttelettes de la suspension, la suspension étant déjà décomposée en gouttelettes avant ou au début de la section d'accélération. La forme des canaux (8) empêche tout reflux de la suspension dans la section d'accélération. Les fumées et les gouttelettes en suspension réagissent et les gouttelettes sont déviées de 180· en direction de la force de gravité dans un premier séparateur goutte à goutte (3) raccordé.

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