Abstract:

Taking the operation mode of a desulfurization and oxidation fans for a 350MW unit as research object, by monitoring the operation mode within 2 oxidizing fans and 1 oxidizing fan，the relationships between the dissolved oxygen concentrationin of desulfurizing absorber slurry and the unit load, the SO2 concentration at FGD inlet and the pH of the slurry are obtained. At the same time,1.5mg/L dissolved oxygen is selected as the standard line of full oxidation of slurry，which determines the optimum operation mode of the oxidizing fan at different loads and SO2 concentrations at the inlet of FGD.The results show that by optimizing the operation of the oxidizing fan, the power consumption for the plant can be saved by 1.1×106kW·h every year. It is of great significance to the energy saving and environmental control of the desulfurization system in the power plant.

Key words:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">oxidizing fan, desulphurization, energy saving, dissolved oxygen, SOfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">2font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">