| 摘要 |
In the process, the exhaust air is guided in an absorption stage (100) countercurrent to water. The water absorbs the solvent continuously. Subsequently, in a downstream desorption stage (200), the water is removed from the solvent by continuous azeotropic distillation. The scrubbing water treated in this manner is fed back to the absorption stage. In rectification stages (300, 400, 500) downstream of the desorption stage (200), the solvent is separated even more completely from the water and purified. <IMAGE> |
