本发明的用于除去从所述组中的至少一个构件选自由油和细颗粒杂质的在美国税务敌人状态中在气体混合物中或供给到含有一氧化二氮的气体混合物中的废气含有非税敌人状态湿气 预处理过程; 使用具有优异的分离性能一氧化二氮从由从氮和/或氧，一氧化二氮选择性分离富含粗气体混合物的预处理工艺的分离膜的膜分离工艺; 的选自由二氧化碳，二氧化氮，水蒸汽和包含通过该膜分离处理后的气体中的有机烃类组成的组中选择的一个构件上的杂质的吸附工序中，将混合物通过抽吸除去; 和压缩和冷却所述气体混合物在吸附通过蒸馏和回收高纯度一氧化二氮的蒸馏工序的粗分离;提供了含有一氧化二氮的回收和纯化过程。 通过根据本发明，一氧化二氮，己二酸，硝酸，和己内酰胺的全球变暖潜势（GWP）回收高310倍氧化亚氮与来自生产过程的温室气体的排放气体的二氧化碳的一氧化二氮的回收和纯化过程 可以获得。 此外，通过在根据本发明，己二酸，硝酸，和己半导体从中可以用作例如用于OLED步骤内酰胺制造工序，液晶，高纯度的废气中的一氧化二氮的回收和纯化过程一氧化二氮（体积或更高99.999％ ）一氧化氮氮可以高回收率（90％以上）进行回收和纯化。

The present invention pre-treatment step for removing at least one member selected from the group consisting of oil and fine particle impurities in the water, fine droplets status of the contained fine droplet state gas mixture by supplying a gas mixture or exhaust gas containing nitrous oxide .; Membrane separation process using a separation membrane having excellent separating performance nitrous oxide to the pre-treatment process from the rough gas mixture enriched by selectively isolated from the nitrogen and / or oxygen, nitrous oxide; Adsorption step of the at least one impurity selected from the group consisting of carbon dioxide, nitrogen dioxide, water vapor and an organic hydrocarbon contained in the membrane separation process via the gas mixture is removed by suction; And compressing and cooling the gas mixture to the adsorption step a rough separation by distillation and by distillation process for recovering a highly pure nitrous oxide; provides a recovery and purification process of the nitrous oxide containing. By the recovery and purification process of the nitrous oxide in accordance with the present invention, nitrous oxide, adipic acid, nitric acid, and caprolactam to the global warming potential (GWP) recovering the 310 times higher nitrous oxide compared to carbon dioxide from the exhaust gas of the production process GHG of the reduction effect it can be obtained. In addition, nitrous oxide by the recovery and purification process of the nitrous oxide in accordance with the present invention, adipic acid, nitric acid, and caproic semiconductor from the exhaust gas of the lactam manufacturing process, LCD, high purity which can be used as such for the OLED step (99.999% by volume or more ) it can be recovered and purified nitrous oxide in a high recovery rate (90%).