APPARATUS AND METHOD FOR CONTROLLING FLUE GAS DESULFURIZATION IN WET PROCESS

摘要

PURPOSE:To maintain the required performance of a desulfurization apparatus which corresponds to the change in operation conditions by installing a means which is connected with a means for measuring operation data of a combustion apparatus and the desulfurization apparatus, identifies the desulfurization performance of the desulfurization apparatus, obtains operation data etc., of the future from the load change ratio, and controls the amount of a circulated absorbing liquid on the basis of the anticipated SO2 concentration at the outlet of the desulfurization apparatus. CONSTITUTION:A desulfurization apparatus equipped with an absorbing tower 5 which desulfurizes a combustion gas generated in a combustion apparatus 1 by contacting the gas with an absorbing liquid and a circulating pump 8 which circulates the absorbing liquid to the absorbing tower 5 is controlled by an apparatus 6 for controlling flue gas desulfurization wet process. In the apparatus 6 is installed a means which is connected to a means for measuring operation data of the combustion apparatus 1 and the desulfurization apparatus, identifies the desulfurization performance of the desulfurization apparatus on the basis of the operation model of the built-in desulfurization apparatus, obtains the operation data in the future and the anticipated SO2 concentration in the future at the outlet of the desulfurization apparatus from the operation data of the combustion apparatus 1 and the desulfurization apparatus and the load change ratio of the combustion apparatus 1, and controls the amount of the circulating absorbing liquid on the basis of the anticipated SO2 concentration at the outlet of the desulfurization apparatus.