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本文介绍了膜分离制氮装置的研制情况。在研制过程中，解决了螺杆空压机的防爆、压缩空气的净化、恒温及整个系统的配套参数合理选择等技术关键。成功地研制了具有国际先进水平的MD－350型井下移动式膜分离制氨装置（下简称“制氮装置”），并已服务于煤矿生产。
This article describes the development of membrane separation nitrogen device. In the development process, to solve the explosion-proof screw air compressor, compressed air purification, temperature and the entire system supporting the choice of a reasonable key technical parameters. Successfully developed with the international advanced level of MD-350 underground mobile membrane separation ammonia plant (hereinafter referred to as “nitrogen plant”), and has been serving the mine production.