| 摘要 |
A method of treating an exhaust gas containing SO2 and HF which is characterized by using an absorbing liquid containing CaCO3 and Ca(OH)2 as absorbents to be fed to an absorption tower for the exhaust gas, circulating said absorbing liquid from a second slurry tank to the absorption tower, from the absorption tower to a first slurry tank, and from the first slurry tank to the second slurry tank, introducing Ca(OH)2 into the second slurry tank to keep the pH value of the absorbing liquid in the second slurry tank in the range of 5.5-7.0, and blowing air into the absorbing liquid in the first slurry tank. |
