有机蒸气 (VOC) /氮气混合气膜法分离过程是气体分离膜应用的又一分支 ,文章首先从理论上证明膜法分离有机蒸气 /氮气混合气的可行性 ;再用实验结果证明了该过程的可行性 ,同时考察操作条件对脱除率的影响 .实践证明 :膜法分离有机蒸气过程操作简单 ,运行稳定 ,在石油化工行业具有很广阔的发展前景 . Organic vapor (VOC) / nitrogen gas mixture membrane separation process is another branch of gas separation membrane applications, the paper first theoretically proved the feasibility of membrane separation organic vapor / nitrogen mixture; and then the experimental results show that the process And the influence of operating conditions on the removal rate has been investigated.It has been proved that the separation of organic vapor by membrane method is simple and stable in operation and has a very broad development prospect in the petrochemical industry.