AN EVALUATION OF HIGH-TEMPERATURE PERFORMANCE OF SUPERHEATER MATERIALS IN BIOMASS POWER PLANTS

Yuchun Li, Hongliang Zhang, Yuwu He, Musong Lin, Mei Li, Wei Wang, Zhaojin Xu, Feng Zhong, Fan Yang, and Lei Ma

Keywords

Biomass combustion, hightemperature performance, kinetics analysis, activation energies

Abstract

High-temperature tests were carried out for three kinds of superheater materials, TP316, 15CrMo and T91, used in biomass power plants in this article. The corrosion kinetics were studied and discussed under conditions of 600–700◦C KCl medium with analysis of weight change and metallurgical microscope. It can be concluded that the order of high-temperature performance is T91 > TP316 > 15CrMo. The calculation of activation energies can demonstrate that the corrosion process was accelerated for 15CrMo after first hour experiment.

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