Evaluation of Anticorrosion Performance of New Materials for Alternative Superheater Tubes in Biomass Power Plants

• Main Authors: Li Yuchun, Zhang Hongliang, He Yuwu
• Format: Article
• Language: English
• Published: De Gruyter 2016-09-01
• Series: High Temperature Materials and Processes
• Subjects: biomass combustion; superheater; corrosion kinetic; high-temperature oxidation; correlation analysis
• Online Access: https://doi.org/10.1515/htmp-2015-0089

One way of controlling alkali chloride-induced corrosion in biomass boilers is by designing new alloy materials used as superheater tubes. Four newly designed Cr–Ni alloy was designed and studied for applicability in biomass power plants. High-temperature oxidation experiments and high-temperature corrosion experiments were carried out for evaluation material characterization. Through analysis and discussion of the corrosion kinetics and oxidation kinetics, it can be concluded that materials with series number of “2xx” and “3xx” had better endurance ability in KCl environment under 650°C and 700°C than TP316 material. In the same conditions, 3xx material had better anticorrosion ability in 700°C with KCl environment.