Limestone / lime-gypsum method

Limestone / lime-gypsum method

The limestone / lime-gypsum desulfurization process is currently the most widely used and most mature flue gas desulfurization technology. This method uses limestone or lime as the desulfurization absorbent. By adding the absorbent slurry to the absorption tower, it can fully contact and mix with the flue gas, and wash the flue gas, and the role of sulfur dioxide in the flue gas in oxidizing the air Under the chemical reaction, the by-product gypsum is generated to achieve the purpose of removing sulfur dioxide.

Features

    • Mature technology and high market share;
    • Absorbent resource reserves are abundant, widely distributed, and low price;
    • High desulfurization efficiency, the desulfurization efficiency can reach 95% when the calcium-sulfur ratio is less than 1.05 Above;
    • is suitable for a wide range of applications, especially for flue gas treatment of large-capacity power station boilers;
    • By-products are gypsum, which can be used as cement additives or building materials.