| 摘要 |
A process for treating industrial stack gases containing sulfur dioxide in the gas contact zone of a scrubbing tower with an aqueous medium containing a sulfur dioxide reactant material, which aqueous medium is subsequently removed from the contact zone and introduced into a reaction tank where the initial reaction product is oxidized to more stable reaction products. The process includes automatically controlling the pH of the liquid in the reaction tank, which automatic controlling includes monitoring the conditions in the reaction tank, comparing the information from the monitor to an optimum preselected condition and introducing a corrective portion of basic liquid into said reaction tank to attain the optimum preselected condition. The process further includes using the reaction tank as a supply reservoir for liquid introduced into the contact zone of the scrubbing tower, thus, insuring that the liquid introduced into the contact zone is of optimum pH for reaction. |
