Optimization study on high-temperature corrosion prevention of the water wall of a 1000 MW dual circle tangential boiler during operation. (November 2021)

• Record Type: Journal Article
• Authors: Cao, Lantian; Peng, Rong; Deng, Zhongyi
• Is Part Of: Energy reports. Volume 7(2021)Supplement 7
• Page Start: 915
• Page End: 925
• Publication Date: 2021-11
• Subjects: High-temperature corrosion -- Numerical simulation -- Dual circle tangential boiler -- Burner height–width ratio -- Secondary air nozzle swing angle; Power resources -- Periodicals; Energy industries -- Periodicals; Power resources; Periodicals; Electronic journals; 621.04205
• DOI: 10.1016/j.egyr.2021.09.181
• Languages: English
• ISSNs: 2352-4847

Abstract

Abstract: High-temperature corrosion of boiler water wall is one of the major factors that affect safe and economic operation of large thermal generator sets. For the high-temperature corrosion of right and left water walls of a domestic 1000 MW dual circle tangential boiler during trial operation, this paper studies impact on high-temperature corrosion of water walls from burner height–width ratio and secondary air nozzle swing angle respectively through Fluent numerical simulation. Simulation results show that a burner combination mode with a small height–width ratio shall be used during actual operation of the boiler. In addition, when the secondary air nozzle is swung upward by 15°, the CO concentration at the place close to the wall surface in the combustion zone is less than 3% with adequate oxygen content, which can reduce high-temperature corrosion risk of water walls.