| 摘要 |
<p>PURPOSE:To carry out economical operation of the title apparatus by selecting optimum conditions from the data of waste gas flow rate into an absorption tower, the concentrations of SO2 at an inlet and an outlet of the absorption tower, the concentration of an absorbent in an absorbent solution, pH of the absorbent solution, and the number of driving circulation pumps and controlling the operation. CONSTITUTION:Desulfurization efficiency is computed by a computer 10 based on actual, operational data such as a waste gas flow rate into an absorption tower 1, pH of an absorption solution 2, the concentrations of SO2 at an inlet 8 and an outlet 9 of the absorption tower, the concentration of an absorbent in the absorbent solution 2, and the number of operating circulation pumps, etc. Operational conditions are so altered as to have the computed desulfurization efficiency superior to a set desulfurization efficiency, and real-time operational conditions are so selected as to have ability superior to the set desulfurization efficiency. Then, operation cost under each operational condition is computed and an operational condition is so set as to have minimum operation cost and basing on the operational condition, the actural supply amount of the absorbent, pouring amount of an activating agent, a number of the circulation pumps to be driven are controlled and as a result, most economical operation is thus achieved.</p> |
