In the separation of PTA oxidation residue,pure water was used as the extractant,and extracted solution was exchanged and absorbed by ionic exchanged resin of styrene.

• 用脱离子水作萃取剂,萃取液经苯乙烯阳离子交换树脂交换吸附后所得的催化剂溶液可回用于PTA氧化装置。