Numerical Simulation of High Temperature Corrosion Reduction by Deflected Secondary Air in a Tangentially Fired Ultra Supercritical Boiler

doi:10.11930/j.issn.10.11930.2015.1.47

Abstract

Abstract: Aiming at the phenomenon of high temperature corrosion in a large area of the water wall in the routine operation of an ultra supercritical boiler, the numerical simulation using the Fluent software for computational fluid dynamics is conducted. The simulation results indicate that there exists the phenomenon of primary air sweeping the water wall and the concentration of CO in the water wall surface area is high, which is apt to cause high temperature corrosion. The numerical simulation results are proved to be reliable as they are consistent with the test results. Therefore, the simulation on the deflected secondary air alleviating the high temperature corrosion is carried out, which indicates that this method can effectively prevent the high temperature corrosion and it can provide a reference for future’s modification.

Key words: boiler, numerical simulation, high temperature corrosion

CLC Number:

TK223.21

DENG Zhongyi, YU Yongsheng, XIE Hong, CHEN Jian. Numerical Simulation of High Temperature Corrosion Reduction by Deflected Secondary Air in a Tangentially Fired Ultra Supercritical Boiler[J]. journal1, 2015, 48(1): 47-51.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.1.47

https://www.electricpower.com.cn/EN/Y2015/V48/I1/47

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