| 摘要 |
<p>A method of separating a gas according to the PSA method by removing an easily adsorbable gas by adsorption from a raw material gas consisting of the easily adsorbable gas and a difficultly adsorbable gas in an adsorbent bed and separating the difficultly adsorbable gas as a product, wherein use is made of a gas separator equipped with a dehumidifier bed on the raw material gas supply side of the adsorbent bed and with a heater between the adsorbent bed and the dehumidifier bed or inside the dehumidifier bed, and which comprises heating the raw material gas passing through the dehumidifier bed and flowing into the adsorbent bed at the time of adsorption so as to heat a low-temperature portion occuring at the raw material gas inflow portion of the adsorbent bed, and heating the adsorption gas passing through the adsorbent bed and flowing into the dehumidifier bed at the time of desorption. The invention method can improve the gas separation performance, can save heat energy, and can improve the moisture removing capacity and the regeneration effect of the dehumidifier. Accordingly, the packing quantity of the dehumidifier can be reduced to below 70 % of the quantity required conventionally.</p> |
