Preparation method of low-odor high-activity polyether polyol

The invention relates to a preparation method of low-odor high-activity polyether polyol, wherein the method comprises the steps: adding polyether polyol with the average molecular weight of 350-700 into a reactor as a starting polymer, adding a bimetallic complex catalyst (DMC), carrying out continuous production process, carrying out ring-opening polymerization on one or more epoxy compounds atthe temperature of 130 DEG C+/-5 DEG C to 170 DEG C+/-5 DEG C to prepare a polyether intermediate with the average molecular weight of 5000-10000, adding the polyether intermediate into an alkali metal catalyst aqueous solution, carrying out dehydration treatment, carrying out ring-opening polymerization on ethylene oxide at the temperature of 100-130 DEG C to carry out end-capping treatment, removing the alkali metal catalyst by adopting an adsorbent, and thus obtaining refined polyether with the average molecular weight of 6000-12000. 本发明涉及一种低气味高活性聚醚多元醇的制备方法，本方法采用在反应器中投入一种平均分子量350-700的聚醚多元醇作为起始聚合物，再投入双金属络合催化剂(DMC)，采