It is mainly used to remove harmful gases such as sulfur dioxide and nitrogen oxides. The recovered products can be used to make agricultural fertilizer for recycling and complete the effective reuse of waste gas because they contain more sulfur, phosphorus, nitrogen, iron, magnesium, manganese, aluminum, calcium and other components.

Five items should be paid attention to when purchasing magnesium oxide for power plant desulfurization; 1. The content of magnesium oxide must be greater than or equal to 85%; 2. Silicon dioxide must be less than or equal to 5%; 3. Calcium oxide must be less than or equal to 2%; Loss on ignition must be less than or equal to 7%; The fineness of magnesium oxide must be less than or equal to 90% of the pass rate of 200 meshes; The desulphurization rate of this quality magnesium oxide can reach 97% - 98%, with low investment cost, low operation cost, broad application prospect and no secondary pollution. At present, according to market survey, magnesium oxide desulfurization efficiency is higher than other desulfurization agents, and production costs are more economical. Moreover, magnesium oxide technology for desulfurization is mature. At present, magnesium oxide desulfurization technology has been successfully applied in all parts of the world. Among them, more than 100 projects have been applied in Japan. 95% of power stations in Taiwan use magnesium oxide method for desulfurization. In addition, magnesium oxide is also used in the United States, Germany and other places for desulfurization. According to the market, magnesium oxide desulfurization technology will be applied by more and more enterprises in the future.