What is the desulfurization principle of activated carbon

  • Carrie Ge
    Jan 20
    SO2 pollution is a serious environmental problem in our country, which has received extensive attention. Among the many flue gas desulfurization and denitrification technologies, activated carbon adsorption is the only method that can remove multiple pollutants in flue gas, including SO2, NOx, soot particles, mercury, dioxins, furans, and heavy metals , Volatile organic compounds and other trace elements. yongruida pellet activated carbon The development of such flue gas desulfurization and denitrification technologies and the control of SO2 and NOx emissions from coal combustion in my country are of great significance to the sustainable development of the national economy.

    Activated carbon has a highly developed pore structure and huge specific surface area, so it has strong adsorption. In addition, the surface of activated carbon contains multiple oxygen-containing functional groups, so it is not only an excellent adsorbent, but also a catalyst and catalyst carrier.

    The adsorption of activated carbon to SO2 includes physical adsorption and chemical adsorption. When there is no water vapor and oxygen in the flue gas, physical adsorption mainly occurs, and the adsorption amount is small.

    When the flue gas contains sufficient water vapor and oxygen, activated carbon flue gas desulfurization is a process of chemical adsorption and physical adsorption. coconut activated charcoal The physical adsorption occurs first, and then the SO2 adsorbed on the surface of the activated carbon is catalytically oxidized to H2SO4 in the presence of water and oxygen. For a long time, people have described the overall reaction process with the following chemical equation: