Pollution Control Systems
Many of our alloys are used in pollution control systems, such as flue gas desulfurization (FGD) units, wet electrostatic precipitators (WESP), as well as some carbon capture absorbers.
Due to the corrosive conditions caused by high aqueous chloride levels, low pH levels, and elevated temperatures, alloys with molybdenum (Mo) additions are used to effectively resist pitting and crevice corrosion.
- AL-6XN®, ZERON® 100 (UNS S32760), and Duplex Stainless Steels (UNS S32205, UNS S31803/2205) are commonly used in many FGD and WESP applications to make absorber vessels, wallpapering, ducting, turning vanes, pumps, slurry handling systems, impellers, and dampers etc.
- AL-6XN® has been in service for over 20 years in many FGD systems with no reported problems.
- Duplex Stainless Steels (UNS S32205, UNS S31803/2205) and ZERON® 100 (UNS S32760) are becoming a more popular material choice due to their high strength and cost-effectiveness compared to higher nickel alloys.
- Duplex Stainless Steels (UNS S32205, UNS S31803/2205) has also been successfully used in a pilot plant, carbon capture and absorber vessel.