| 摘要 |
<p>PURPOSE:To simultaneously desulfurize and denitrate by providing an ammonia supply means, an absorption tower carrying out denitration treatment, a returning means returning a part of absorbent to the absorption tower, and a reduction tower returning the other part of adsorbent after regeneration to the absorption tower. CONSTITUTION:The simultaneous desulfurization and denitration equipment 1 consists of the ammonia supply means 3 which mixes ammonia into exhaust gas discharged from a burner 2, the absorption tower 4 which desulfurize and denitrate the exhaust gas by the absorbent consisting of metallic oxide, such as copper oxide, an absorbent circulation means 5 which returns a part of absorbent used for the desulfurization and denitration in the absorption tower 4 to the absorption tower 4, and the reduction tower 6 which receives the other part of absorbent and regenerates it with reduction gas and returns the regenerated absorbent to the absorption tower 4. The gas mixed with ammonia is brought into contact with the absorbent consisting of metallic oxide and with the absorbent which is returned by the absorbent circulation means and contains sulfate after the desulfurization and denitration in the absorption tower, and the sulfur oxide in the exhaust gas is absorbed and removed by the metallic oxide, and the nitrogen oxide is reduced by ammonia under the existance the absorbent containing sulfate.</p> |
