| 摘要 |
<p>PURPOSE:To reduce an installation area, by flowing waste gas to the upper part of a reactor from the lower part thereof to improve mixing in an up-and-down direction in the reactor. CONSTITUTION:Waste gas is supplied to the inside gas passage provided to the lower stage of a reactor and contacted with activated carbon so as to cross the same at right angles to be desulfurized. The desulfurized gas is raised through the outside gas passage while mutually mixed with gases passing the upper part, the intermediate part and the lower part of a lower stage moving layer to be homogenized and, after the resulting gas mixture is injected with ammonia, it is contacted with activated carbon in the upper stage of the reactor so as to cross the same at right angles top be converted to the denitrated gas which is in turn exhausted through the inside gas passage. Desulfurization is carried out in the lower stage of the reactor while denitration in the upper stage thereof and the adsorbent supplied from the to part of the upper stage is fallen through the moving layer and reaches the lower stage moving layer through a seal part to be able to be taken out to the outside through an exhaust port.</p> |
