聚酰亚胺中空纤维膜用于甲醇/甲基叔丁基醚的分离

Studies of the Separation of Methanol-MTBE Mixtures with Hollow Fibermembranes Spun with the Polyimide

摘要: 甲醇／甲基叔丁基醚混合物的膜法分离，大多采用渗透汽化方法，少有采用蒸汽渗透法。用聚酰亚胺中空纤维膜，对以蒸汽渗透和渗透汽化两种方式分离甲醇／甲基叔丁基醚混合物（甲醇质量分数为0．01－0．30）的效果进行了对比。结果显示，在甲醇质量分数低于0．05时，蒸汽渗透较渗透汽化法的分离性能优越。

Abstract: The membranes method to separate the methanol MTBE mixtures is almost that of pervaporation. The vapor permeation is not used to the mixtures. In this work, a hollow fiber membrane module made from a kind of polyimide was used to separate the methanol