Abstract
Corrosion experiments were carried out with metals 20G, 15CrMoG and 12Cr1MoVG under the simulated atmosphere (N2-5%O2-1500μL/L HCl) of superheaters in waste plastic boilers to choose appropriate materials preventing high temperature corrosion. Corrosion dynamic curves were plotted by mass gain per unit area. Metal specimens after corrosion tests were analyzed by SEM-EDS and XRD. The results show that 20G has the poorest anti-corrosion abilities among the three materials; the corrosion process is involved in activation oxidation of chlorine. Addition of Cr in alloys can improve their corrosion resistance in the mixed atmosphere.
Publisher
Trans Tech Publications, Ltd.
Reference12 articles.
1. Yingmin Zhang, Xiaobo Shang, Kaiming Li, Technologies status and management strategies of municipal solid waste disposal in China, Journal of Ecology and Environment. 2 (2011)389-396.
2. M. Y. Wey, K. X. Lin, W. J. Yu, et al, Influence of chlorine content on emission of HCl and organic compounds in waste incineration using fluidized beds, Waste Management. 28(2008) 406-415.
3. Nielsen H P, Frandsen F J, Dam-Johansen K, et al, The implications of chlorine-associated corrosion on the operation of biomass-fired boilers, Progress in Energy and Combustion Science. 3 (2000)283 - 298.
4. Jiamin Yin, Zhansong Wu, Experimental investigation of corrosion associated with gaseous HCl in the superheaters in a biomass boiler, Journal of Tsinghua University(Science and Technology). 11 (2008) 1791-1794.
5. A. Miltner, G. Beckmann, A. Friedl, Preventing the chlorine-induced high temperature corrosion in power boilers without loss of electrical efficiency in steam cycles, Applied Thermal Engineering. 26(2006) 2005–(2011).