| 摘要 |
<PICT:0474230/III/1> Gases and vapours are recovered from air and other gases by passage through an adsorbent filter in which during the flushing operation with steam or other inert gas the adsorbed gases are condensed on the peripheral wall of the filter, which is maintained cold, e.g. by means of a cooling jacket. In the form shown, the container c for the adsorbent, e.g. active carbon is a cylindrical annulus having perforated walls, the gases to be treated passing through the mass from inlet i and leaving by pipe f<1>. For flushing purposes, steam is passed in the reverse direction from perforated pipe g<1>. A perforated baffle h<1> is provided to prevent water from being blown into the adsorbent mass. The gases removed by the steam are condensed on the outer wall of the casing a, which is maintained cold by the jacket a<1>, and trickle down the annulus e to a sump b<3> from which they pass to a separating tank k. If desired, a conical hood may be provided above the container c whereby water condensed on the underside of the upper part of the casing a is directed into the annulus e. |
