| 摘要 |
A device for separating at least one gaseous pollutant from a gas comprising an apertured plate ( 8 ) which permits the passage from below the apertured plate of the gas containing the at least one gaseous pollutant and wherein on the upper surface ( 12 ) of the apertured plate ( 8 ) a layer ( 14 ) of absorption liquid is made to flow. A fixed barrier ( 76 ) being positioned within an outlet zone ( 68 ) so as to extend vertically upwards from the apertured plate ( 8 ). A controllable throttle means ( 80 ) is positioned above the fixed barrier ( 76 ) so as to be operable to control the amount of resistance that the flowing layer ( 14 ) of the absorption liquid has to overcome in order to flow past the fixed barrier ( 76 ). The separation of the at least one gaseous pollutant from the gas is adjustable by varying the thickness (T) of the flowing layer ( 14 ) of the absorption liquid that flows over the apertured plate ( 8 ) by moving the throttle means ( 80 ) to a position that provides the desired amount of resistance that the flowing layer of the absorption liquid is required to overcome.
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