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CN1508064A 一种高纯度氮气的制取方法 无效 - 撤回 转让

一种高纯度氮气的制取方法
摘要：
本发明涉及一种高纯度氮气的制取方法，特别是用环己烷氧化尾气制取高纯度氮气的方法，其特征在于将环己烷氧化生产环己酮过程中产生压力为0.6MPa～1.5MPa的尾气常温在压力－0.05MPa～1.3MPa下变压吸附；在200℃～450℃下催化氧化；在100℃～300℃下加氢脱氧；在压力－0.05MPa～1.5MPa下常温变压吸附干燥；在压力0.6MPa～1.5MPa，温度0℃～300℃下吸附脱氧，产出高纯度氮气。本发明与现有技术比较积极效果在于：首先国内现没有利用环己烷氧化尾气净化制取高纯度氮气的方法；本发明与现有成熟制氮方法相比，因省去了空压机，年运行能耗大大降低，产品氮气成本为0.1元/Nm3。
摘要（英）：

The method for preparing high-purity nitrogen gas, specially, the method for preparing high purity nitrogen gas by utilizing cyclodexane oxidation tail gas is characterized by that the it makes the tail gas which is produced in the course of producing cyclohexanone by using cyclohexane oxidation process and whose pressure is 0.6 MPa-1.5 MPa undergo the following processes: pressure-swing adsorption at normal temperature and pressure of -0.05 MPa-1.3 MPa; catalytic oxidation at 200 deg.C-450 deg.C; hydrogenation deoxidation at 100 deg.C-300 deg.C; pressure-swing adsorption drying at 0.05 MPa-1.5 MPa and normal temp.; and adsorption deoxidation at 0.6 MPa-1.5 MPa and 0-300 deg.C so as to obtain the high-purity nitrogen gas.

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