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美国佛蒙特州威利斯顿的Ｅｎｅｒｆｅｘ公司已提交第一套供使用的除氮膜装置(ＮＲＭＵ),用于对供给燃料电池发电系统的天然气进行预处理．每一ＮＲＭＵ的１８个膜组件,约合２４．１ｂｍ长的镀覆有０．５μｍ等离子体镀半渗透性气体阻隔层的２５０μｍ中空纤维．这种膜对烃和二氧化碳的渗透选择性大于对氮的选择性,越是高级烃,选择性越高．渗透流量为标准空气分离膜的８０倍．产物
Enerfex, of Williston, Vermont, USA, has submitted the first nitrogen removal membrane unit (NRMU) for use in pretreatment of natural gas for use in fuel cell power generation systems. Eighteen membrane modules per NRMU, approximately 24.1 bm of 250 [mu] m hollow fiber plated with 0.5 [mu] m plasma-plated semi-permeable gas barrier layer. This membrane has a greater selectivity of permeation to hydrocarbons and carbon dioxide than to nitrogen and the more advanced the higher the selectivity of the membrane. The permeate flow rate is 80 times that of the standard air separation membrane. product