该文以甲苯 TNT 水体系为对象 ,对膜萃取模型进行了研究 ,求取了该体系膜萃取过程的传质方程 ,并通过实验进行了验证。结果表明 ,所得的传质方程可信、有效 ,相对偏差在 1 0 %以内。比较和分析膜萃取过程中各部分传质阻力 ,可以看出 ,对于该体系选取疏水膜器 ,可以有效地减小膜阻 ,强化传质。 In this paper, the model of membrane extraction was studied with toluene as the object of TNT water system. The mass transfer equation of the membrane extraction process was obtained and verified by experiments. The results show that the resulting mass transfer equation is credible and effective with a relative deviation of less than 10%. When comparing and analyzing the mass transfer resistance of each part in the process of membrane extraction, we can see that for this system, we can reduce the membrane resistance and enhance the mass transfer effectively.