The extract with high concentration of acetic acid will be distilled after extraction.So the solvent and raffinate can both be reused.The whole process formed closed circuit with almost no discharge.

• 含醋酸的溶剂可以通过蒸馏回收醋酸,回收的溶剂可以循环使用,经处理过的废水可以复用,从而达到不排放或少排放的闭路循环。