采用错流平板膜超滤技术,使用聚醚砜超滤膜精制低不饱和度聚醚多元醇,粗聚醚多元醇由正己烷1:1体积比稀释.在前期对操作压力、料液流速等条件研究的基础上,采用阻力叠加法建立膜通量与各影响因素之间的数学模型,通过实验数据拟合模型参数.结果表明:模型拟合值曲线与实验数据拟合良好,各曲线的相关系数均在0.97以上,且膜通量的理论值与实验值之间的相对偏差较小,在0.13％～14.02％范围内.根据该数学模型,可以预测不同操作条件下的膜通量值,同时为精制工艺的工业化生产提供有效的工艺参数.
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