| 摘要 |
<p>PURPOSE:To provide an absorption tower structure optimum in the case of setting one absorption tower when two lines of venting systems are formed in an exhaust gas desulfurizing device. CONSTITUTION:Exhaust gas 3 is introduced from an absorption tower inlet duct 5 into an absorption tower 4, brought into contact with absorbing solution to carry out desulfurization and discharged out of an absorption tower outlet duct 5. Two lines or more of venting systems for the outlet duct 16 are formed, and the ducts 16 are formed on the same level as the absorption tower 4, and the height of tower can be lowered as compared with the case of one line outlet duct 16, and the opening areas of respective outlet ducts 16 can be formed smaller, drifts are not generated in gas flow at the outlet duct sections 16, and gas can be discharged uniformly to the two lines of waste gas outlets. When the outlet ducts 16 are formed on a side face facing the absorption tower 4, generation of gas drift can be prevented. The bottom faces of the ducts 16 are inclined, and in the case one line of venting system is operated at the time of low load, accumulation of mist can be prevented by flowing clean water also in a mist eliminator 12 on the operation stop side.</p> |
