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AssigneeALSTOM Technology Ltd
InventorsSune Bengtsson, Lars-Erik Johansson, Kjell Nolin, Mati Maripuu
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A device (1) for separating sulphur dioxide from a gas has an inlet (2) for the gas (4) and an outlet (42) for gas (40), from which sulphur dioxide has been separated. An apertured plate (20) is arranged between the inlet (2) and the outlet (42) and allows the gas (4) to pass from below. On its upper side (22), the apertured plate supports a flowing layer (24) of absorption liquid. An inlet duct (12) connects a container (6) for absorption liquid to the upper side (22) of the apertured plate (20). A means (10) conveys the absorption liquid (8) from the container (6), through the inlet duct (12), to the upper side (22) of the apertured plate (20) and along the apertured plate (20). The device also has an outlet box (30) for collecting the absorption liquid (8) flowing over the apertured plate (20) and at least one distribution means (34), which is arranged to contact the gas (4) which is supplied to the device (1) through the inlet (2) with the liquid (8) flowing from the outlet box (30) to the container (6) before the gas (4) passes through the apertured plate (20).
A method for separating sulphur dioxide from a gas by means of an aqueous absorption liquid, in which method the gas is conveyed upwards through a substantially horizontal apertured plate, on which a flowing layer of the absorption liquid is provided, wherein the absorption liquid is conveyed over the apertured plate from an inlet zone to an outlet zone in which the absorption liquid is collected and caused to flow downwards to a container for absorption liquid, the gas first being conveyed through a contact zone, in which it is contacted with the absorption liquid flowing downwards from the outlet zone to the container, and the gas then being conveyed upwards through the apertured plate and the flowing layer provided thereon for separating the sulphur dioxide.
A device for separating sulphur dioxide from a gas by means of an aqueous absorption liquid, which device comprises:
Dependencies are inferred from the claim text.