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由于溶剂对中空纤维膜的溶胀,使得溶胀对传质性能产生一定的影响以30%TBP(煤油)-苯酚-水为实验体系,在聚砜中空纤维膜器中系统地研究了溶胀性能对总传质系数、中空纤维膜厚度、内径以及壳程流动状况的影响结果表明,中空纤维膜在溶剂作用下发生溶胀后其膜厚度和膜的内径并未发生明显的变化,而中空纤维膜的长度会因此增大由于溶胀的影响,造成中空纤维膜器壳程溶剂的流动偏离柱塞流模型,从而使计算值与实测值有一定偏差
Due to the swelling of the hollow fiber membrane by the solvent, the swelling has a certain influence on the mass transfer performance. In the experimental system of 30% TBP (kerosene) -phenol-water, the swelling performance was systematically studied in the polysulfone hollow fiber membrane Total mass transfer coefficient, hollow fiber membrane thickness, inner diameter and shell flow conditions The results show that the hollow fiber membrane after swelling under solvent did not change its membrane thickness and membrane diameter significantly, while the hollow fiber membrane As a result, the solvent flow in the shell of the hollow fiber membrane deviates from the plunger flow model due to the influence of swelling, so that the calculated value deviates from the measured value.