| 摘要 |
<p>PURPOSE: To provide a low-cost method for separating the air in which the catalyst contained in a catalytic tower is not early deteriorated in its performance and the maintenance is eliminated for a long period. CONSTITUTION: A method for separating the air comprises the steps of compressing the air introduced from the exterior to compressed air, introducing the compressed air to a second adsorption tower 5 to adsorb to remove the carbon dioxide gas and water in the air, and deeply cooling to liquefy to separate the air fed through the tower 5 to nitrogen and oxygen. Prior to the introduction of the compressed air to the tower 5, the compressed air raised at its temperature by the compression heat in the case of compressing the air is cooled and lowered at its temperature, and then introduced to a first adsorption tower 4 to adsorb to remove the moisture in the compressed air, then the air fed via the tower 4 is passed through a catalytic tower 9 to oxidize the carbon monoxide and the hydrogen in the air.</p> |
