| 摘要 |
In the purification or separation by distillation of organic substances or substance mixtures which have only a limited capacity for absorbing water and boil with water as azeotropes or, if they are incapable of forming azeotropes, boil higher than water, the water contained therein is continuously separated off by causing separation of the water under the distillation conditions within the distillation column by feeding one or more substances which boil over the top, and already only or partially the unvaporised water separating below the product feed and taking it off from the side of the distillation column. …<IMAGE>… |
