| 摘要 |
A method and a device for removing acidic materials, such as CO 2 and H 2 S, with limited energy consumption are provided. The method comprises a step of introducing the feed gas (21) into a first absorber (1), and removing CO 2 and H 2 S from the feed gas (21) by contacting the feed gas (21) with a lean solution (27) in the first absorber (1); and a step of introducing the feed gas (21) into a second absorber (2), and removing CO 2 and H 2 S remaining in the feed gas (21) by contacting the feed gas (21) first with a semi-lean solution (28) and then with another part of the lean solution (27). The rich solution (25) having absorbed CO 2 and H 2 S in the first and second absorber (1,2) is regenerated in a flash drum (4) and a stripper (5). |
