| 摘要 |
The present invention relates to a method for recovering acetic acid from reactor discharge gas in the oxidation process of an aromatic compound. Particularly, when the oxidation process of an aromatic compound is performed, gas discharged from a reactor passes through a general vacuum-distillation tower, an extraction tower, and an azeotropic distillation tower, or an extraction tower and a vacuum azeotropic distillation tower, so as to recover acetic acid and remove water. Thus, low-temperature steam may be used by a vacuum-distillation process, replacing a conventional dehydration tower. Also, when compared to well-known azeotropic distillation processes, the amount of medium steam which is used for separating the water and the acetic acid from each other may be significantly reduced. |
