Experimental Study on Gas Atmosphere near Side Walls of Swirl Opposed Supercritical Boiler

Abstract:

High temperature corrosion of metal material was found on the side water-walls of a swirl-opposed firing supercritical boiler. The gas atmosphere near the side wall has great relationship with the high temperature corrosion. Test holes were installed on the side walls to form an experimental system. The gas compositions near the side walls were analyzed under different combustion conditions. High CO concentration is detected near the side walls. The effects of the operation states of burners on the CO concentration near side walls were tested. High over-fire air quantity results in strong reducing atmosphere of the test area. The adjusting method to control the atmosphere is suggested.

• Periodical: Advanced Materials Research (Volumes 732-733)
• Pages: 116-119
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.732-733.116
• Online since: August 2013
• Authors: Xing Sen Yang*, Xin Gang Zhou
• Keywords: Atmosphere, Experimental Study, High Temperature Corrosion, Swirl Opposed Boiler

References

[1] Zouxian Power Plant: Operation Code of 1000MW Units

[2] Yang Xingsen and Zhou Xingang: Test Report on Gas Atmosphere near Side Walls of Zouxian #7 Boiler, Shandong Electric Power Research Institute, 2012.