Application of spray drying desulfurization technology in protecting ecological environment

Due to the increasing global energy consumption year by year, the burning and utilization of coal as a primary energy source releases a large amount of sulfur dioxide and the regional acid rain formed by it, which has caused serious pollution to the environment. It disrupts the ecological balance, leading to large-scale destruction of forests, acidification of soil and lakes, and corrosion of buildings.

Therefore, controlling and reducing the emissions of sulfur dioxide is an important task. Among many desulfurization technologies, the use of spray drying to remove sulfur dioxide from flue gas is a more and more important technology. This technology began research in the 1970s and was put into commercial operation by the late 1970s. It features less investment, simple operation, high sulfur removal efficiency and no secondary pollution. Compared with the wet method widely used in flue gas desulfurization, the powder product formed by spray drying desulfurization has greater selectivity and development value.

An important prerequisite for the wide application of spray drying gum sulfur technology is to solve the problem of reasonable development and utilization of a large amount of dried powdered sulfate. It can be regenerated as an absorbent, and some dry materials can be recycled as fillers for the earth. It can be converted into a paste for use as a retarder in cement, made into granular artificial sand and gravel, and used as a filler for building materials instead of commonly used concrete and asphalt.