Abstract: Extraction of organic acids from corn polyols residue was carried out with tributyl phosphate（TBP）as complexing agent. Effects of varying parameters were investigated，including complexing agent concentration，diluent type，extraction time，oil water ratio（O/W），pH value of the residue and stages of extraction. The extraction ratio for organic acids could be achieved to 90.7% after a 4-stage extraction.

摘要： 采用络合萃取技术，以磷酸三丁酯（TBP）为络合剂进行玉米化工醇重组分络合萃取有机羧酸过程研究。探讨了萃取剂浓度、稀释剂的选择、萃取时间、油水比（O/W）、釜残液酸度、萃取级数对萃取平衡常数（D）的影响。结果表明，经四级萃取后，玉米化工醇重组分中有机酸萃取率可达90.7%。