| 摘要 |
<p>Disclosed is a wet-type flue-gas desulfurization device-which introduces exhaust gas emitted from a combustion device into an absorption tower, injects an absorbing solution (6) from spray nozzles (10) disposed at spray headers (9) disposed in multiple stages in the direction of flow of exhaust gas from the bottom to the top, and brings the solution into gas-liquid contact with the exhaust gas-wherein: the spray nozzles disposed at each level excepting the uppermost level of the aforementioned multiple stages of spray headers are three-way spray nozzles having an upward direction, a downward direction, and a lateral direction; of said three-way spray nozzles, the ratio of the flow rate of the absorbing solution injection from the upward direction spray nozzles to the flow rate of the absorbing solution injection from the downward direction spray nozzles to the flow rate of the absorbing solution injection from the lateral direction spray nozzles is in the range of 0.2-1:1:0.05-0.4; and since three-way spray nozzles are used, the gas-liquid contact state in the spray tower method is improved, obtaining a high desulfurization rate.</p> |
