| 摘要 |
The invention relates to a method for absorbing one or more gaseous components from a gas by the gas, with the component(s) to be absorbed present therein, being brought into contact with a liquid, the gas and the liquid being separated by a hydrophobic membrane of a material other than polytetrafluoroethylene, the liquid comprising water and a water-miscible and/or water- soluble organic absorbent, the surface tension of the liquid at room temperature being set to at least 60.10-3 N/m by the addition of a water-soluble salt. The membranes are preferably in the form of hollow fibres made of, for example, polypropylene or polyethylene. The salt is preferably chosen from water-soluble carbonates. The method is suitable, in particular, for absorbing carbon dioxide. The invention further relates to a gas/liquid absorption system, comprising a hollow fibre membrane module containing hollow fibres of a material other than polyfluorotetraethylene and a vessel which contains an aqueous solution of a water-miscible organic absorbent and a water-soluble salt, said solution having a surface tension at 20 degree C of more than 60.10-3 N/m.
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