| 摘要 |
<p>An apparatus and method for removing one or more undesirable components from a gas using a sorbing apparatus (10) having at least one chamber (11) (12) with first ports (11a) (12a), and second ports (11b) (12b) defining a gas flow path therebetween. A sorbent bed (13) (14) having a sorbing region (13a) (14a) of a first sorbent material and a guard region (13b) (14b) of a second sorbent material is disposed in sorbing chamber (11) (12). A gas control arrangement (15) cyclically (a) directs influent gas through first port (11a) (12a), sorbing region (13a) (14a), guard region (13b) (14b) and out second port (11b) (12b) wherein the undesirable components are sorbed from the influent gas and (b) directs a purge gas in the opposite direction through sorbing chamber (11) (12) for regeneration. Gas control arrangement (15) cycles the influent gas and the purge gas through sorbing chamber (11) (12) so as to sorb and desorb the undesirable components substantially entirely in sorbing region (13a) (14a) whereby guard region (13b) (14b) serves as a safeguard for sorbing region (13a) (14a).</p> |
