| 摘要 |
<p>An adsorption process and installation permitting at least the partial elimination of water and carbon dioxide contained in a gas to be purified, is provided. In adsorption phase, the gas is caused to flow in contact with an adsorbant substance contained in an adsorption vessel which includes in the direction of flow of the gas to be purified, a first adsorptive bed for the desiccation of said gas and a second adsorptive bed for the decarbonation of said gas. The adsorptive substance is regenerated in a regeneration phase which comprises a first stage wherein solely the second adsorptive bed is heated and the pressure of the adsorption vessel is reduced to effect desorption of the second adsorptive bed, a second stage wherein said heating is interrupted and the adsorptive substance is scavenged by a gas which has been purified at least partially of carbon dioxide and water so as to reheat the first adsorptive bed and to desorb the first adsorptive bed, and to cool the second adsorptive bed, and a third stage wherein the scavenging of the adsorptive substance is continued and solely the first adsorptive bed is cooled.</p> |
