| 摘要 |
The invention relates to a method and to a device for separating carbon dioxide from an exhaust gas of a fossil fired power plant. The power plant thereby comprises a combustion process in which a fossil fuel is burned, wherein an exhaust gas comprising carbon dioxide is generated. In a closed absorption process, the exhaust gas comprising carbon dioxide is brought into contact with an absorption medium, wherein carbon dioxide is absorbed by the absorption medium, and wherein a charged absorption medium and a cleaned exhaust gas are formed. In a subsequent desorption process (10), the charged absorption medium is regenerated, wherein a regenerated absorption medium (26) is formed, wherein the charged absorption medium (25) is fed into the desorption process (10) at least in a first partial flow (30) and a second partial flow (40). In an expansion process subsequent to the desorption process (10), regenerated absorption medium (26) is expanded, wherein vaporous absorption medium (27) is formed. The vaporous absorption medium (27) is subsequently returned to the desorption process (10). |
