| 摘要 |
A device for separating a gaseous pollutant from a gas comprises an apertured plate (8) which allows passage from below of gas containing the gaseous pollutant and which carries, on its upper surface (12), a flowing layer (14) of absorption liquid. A fixed barrier (76) is located at an outlet zone (68) and extends vertically upwards from the apertured plate (8). A controllable throttle means (80) is located above said fixed barrier (76) and is adapted to control the resistance which the flowing layer (14) of the absorption liquid has to overcome in order to pass the fixed barrier (76). The separation of the gaseous pollutant can be adjusted by adjusting the thickness (T) of the flowing layer (14) of the absorption liquid by setting the throttle means (80) to a position that provides a suitable resistance.
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