Limestone gypsum flue gas desulfurization technology and equipment

Product Advantages

1. High desulfurization efficiency: Desulfurization efficiency enhancement technology achieves over 95% efficiency.
2. Wide range of absorbent applications: A variety of absorbents can be used in FGD units, including limestone, lime, magnesia, and waste soda solutions.
3. Zhuanli process technology: Effectively reduces the liquid/gas ratio, achieves high absorbent utilization, promotes uniform airflow distribution within the tower, saves material and energy consumption, and facilitates internal component maintenance.
4. Cross-spray pipe layout technology: Reduces absorption tower height.
5. Strong adaptability to unit load fluctuations: Stable operation within a load range of 15% to 100% is possible.
6. High by-product purity: Commercial-grade gypsum with a purity exceeding 95% can be produced.
7. High dust removal efficiency for coal-fired boiler flue gas: Reaching 80% to 90%.

Working Principle

Desulfurization process
CaCO3+SO2+1/2H2O→CaSO3·1/2H2O+CO2
Ca(OH)2+SO2→CaSO3·1/2H2O+1/2H2O
CaSO3·1/2H2O+SO2+1/2H2O→Ca(HSO3)2

Oxidation process
2CaSO3·1/2H2O+O2+3H2O→2CaSO4·2H2O
Ca(HSO3)2+O2+2H2O→CaSO4·2H2O+H2SO4