| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a wet stack gas desulfurizer provided with the absorption tower capable of reducing the channeling in the tower, with the equipment cost and running cost lowered even if any gas channeling is caused, and enhanced in desulfurizing performance and dust removing efficiency. SOLUTION: The spraying amt. per unit cross-sectional area of an absorption tower vertical to the waste gas flow is made nonuniform at least on the uppermost stage of a spraying part 4 in the main body 1 of the tower. For example, less spraying nozzles are set on the inlet duct 2 side with respect to the center of the tower section than on the part point-symmetrical about the nozzles on the inlet side, and a liq.-to-gas ratio per unit cross-sectional area of the main body 1 is equalized at each part even when the gas channeling is caused to achieve the objective.</p> |
