| 摘要 |
A gas mixture to be separated is passed under pressure over a carbon molecular sieve which preferentially adsorbs one or more components of the mixture, gas rich in the unadsorbed component or components of the mixture being withdrawn from the adsorber, the adsorber is regenerated by reducing the pressure to release a gas enriched in the adsorbed component or components, the adsorber is repressurised and the cycle repeated, the pressure during regeneration not being lowered below atmospheric pressure, which reduces energy requirements. The invention is particularly applicable to obtaining nitrogen-enriched or oxygen-enriched fractions from air and does not require the use of special measures for the preliminary removal of CO2 and water. |
