Desulfurizer

Desulfurizer generally refers to the agent used to remove free sulfur or sulfur compounds from fuels, raw materials or other materials; in the control and treatment of pollutants, it mainly refers to the agent used to remove sulfur oxides (including SO2 and SO3) from waste gas. All kinds of alkaline compounds can be used as desulfurizers.


This mixed solution desulfurizer has surface activity, catalytic oxidation, can promote the direct reaction of SO2, accelerate the dissolution of CaCO3, promote the rapid oxidation of CaSO3 to CaSO4, strengthen the precipitation of CaSO4, reduce the liquid-gas ratio, reduce the ratio of calcium to sulfur, and reduce the evaporation of water. When the SO2 concentration at the inlet of flue gas increases and is higher than the design value, the PH value in the reaction tank of the absorption tower decreases, and a larger Ca/S ratio is needed. When the volume of the reaction tank of the absorption tower does not need to be enlarged, CaCO3 can dissolve rapidly, increase the concentration of calcium ions, maintain the PH value of slurry in the normal range, and have a certain buffer effect on the PH value. By prolonging the operation time of slurry in working section and reducing the times of slurry mixing, the scaling of equipment can be reduced obviously, and the scaling layer becomes thinner. After shutdown, the scaling layer can be washed with water and easily peeled off. The dispersibility and activity of scaling in desulfurization system can reduce the deposition of scaling and the content of chloride ion in slurry. The corrosion and scaling rates of various materials in desulfurization equipment can be reduced to varying degrees. Among them, carbon steel can be reduced the most, corrosion and scaling rates can be reduced by 74% and 79%, respectively, and polyvinyl chloride can be reduced by 48% and 55%. The addition of desulfurizer can play the role of scale inhibition and corrosion prevention, reduce the blockage, scaling, corrosion and wear of desulfurization nozzle, reduce the scaling, corrosion and wear of slurry circulating pump and impeller, and reduce the maintenance and replacement of spare parts in desulfurization system. Widening the selection range of desulfurization materials and improving the reliability of the system. Under different working conditions, slurry circulating pump and oxidation fan can be reduced and stopped, desulfurization efficiency can be improved, operation cost can be reduced, and it is suitable for the change of sulfur content in coal and high sulfur coal. In the application of flue gas desulfurization, it has broad market promotion advantages and can produce considerable economic and social benefits.