| 摘要 |
<p>An adsorbent in granular or lump form is introduced into a reaction chamber (14) and taken out of it through a grid of channels formed by a multiplicity of separate feed and discharge hoppers (18 and 20). Most of the waste gas is fed into the reaction chamber from one side, so that it spreads out over the whole of that side of the chamber, while a small proportion is fed in through the bulk material distributor cone (17). The flow of waste gas through the reaction chamber (14) is distributed so that the adsorbent in almost all parts of the reaction chamber participates uniformly in the adsorption process. Several reaction chambers with several reaction layers are arranged in series in the gas line. After leaving the first reaction chamber (14), the partly cleaned gas is fed back under the discharge plate (9) in such a way that it passes round, and thus heats, the discharge hoopers (20) and the discharge tubes (21, 22), hence preventing the formation of condensation. The adsorption unit (1) can be used to clean waste gases in refuse-incineration plants, different undesirable constituents being removed separately in different adsorption layers (25, 27 and 26, 28) and further processed.</p> |
