Desulfurizers generally refer to agents that remove free sulfur or sulfur compounds from fuels, raw materials or other materials; in the control and treatment of pollutants, they mainly refer to agents that can remove sulfur oxides (including SO2 and SO3) in exhaust gases. Various alkaline compounds can be used as desulfurizers.
This mixed solution desulfurizer has surface activity and catalytic oxidation, which can effectively promote the direct reaction of SO2, accelerate the dissolution of CaCO3, promote the rapid oxidation of CaSO3 into CaSO4, strengthen the precipitation of CaSO4, reduce the liquid-gas ratio, reduce the calcium-sulfur ratio, and reduce moisture. of evaporation. When the SO2 concentration at the flue gas inlet increases and is higher than the design value, the PH value in the absorption tower reaction pool decreases, and when a larger Ca/S ratio is required, CaCO3 can be quickly dissolved without expanding the volume of the absorption tower reaction pool. Increase the concentration of calcium ions, keep the pH value of the slurry in the normal range, and have a certain buffering effect on the pH value. Extending the running time of the slurry in the working section and reducing the number of times of slurry mixing can significantly reduce the scaling of the equipment and make the scale layer thinner. After the machine is shut down, rinse it with water and the scale layer will fall off easily. It can disperse and mobilize the scaling of the desulfurization system, reduce the siltation of scaling, reduce the content of chloride ions in the slurry, and reduce the corrosion and scaling rates of various materials in the desulfurization equipment to varying degrees. Among them, the reduction of carbon steel At most, the corrosion and scaling rates can be reduced by 74% and 79% respectively, and PVC can be reduced by 48% and 55%. The addition of desulfurizer can inhibit scale, corrosion, and corrosion, reduce clogging, scaling, corrosion, and wear of the desulfurization nozzle, reduce scaling, corrosion, and wear of the slurry circulation pump and impeller, and reduce spare parts maintenance in the desulfurization system. and replacement. Broaden the selection of desulfurization materials and improve the reliability of the system. The slurry circulation pump and oxidation fan can be reduced and deactivated under different working conditions to improve desulfurization efficiency and reduce operating costs. It is suitable for changes in sulfur content in coal and is suitable for high-sulfur coal. In the application of flue gas desulfurization, it has broad marketing advantages and can produce considerable economic and social benefits.
