Numerical Simulation Study on Retrofit of Low NOx Burner for 1000MW Ultra-supercritical Boiler

被引：0

作者：

Guan X. ^{[1
]}

Li Y. ^{[1
]}

Zhu Q. ^{[1
]}

Guan M. ^{[2
]}

机构：

[1] College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Yangpu District, Shanghai

[2] EBARA QINGDAO CO., LTD, Qingdao, 266044, Shandong Province

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2019年 / 39卷 / 08期

关键词：

1000MW ultra supercritical boiler burner; Coking; Coupling; Low NO[!sub]x[!/sub] emissions; Numerical simulation; Reducing atmosphere; Retrofit;

D O I：

10.13334/j.0258-8013.pcsee.181513

中图分类号：

学科分类号：

摘要：

In the numerical simulation of furnace combustion, most of the studies have simplified the primary air at the inlet of the furnace into a plane, or divided into a concentrated pulverized coal plane and a light pulverized coal plane. It is considered that the coal powder enters the furnace uniformly, resulting in some deviation between simulation results and actual operation. In this paper, CFD calculation software was used to calculate the burner and the boiler separately, and then the obtained burner data was coupled into each primary air inlet of the furnace for recalculation, so that the primary air inlet was not evenly imported. It had a certain speed field and particle field, which was more in line with the actual operation. In order to reduce NOx emissions, this paper retrofitted the 1000MW furnace burners. The comparison between the simulation results and the actual operation data showed that it was feasible to use CFD calculation software. In this paper, the pipeline of the burner was retrofitted. The simulation results showed that the area of reducing atmosphere inside the furnace was increased, which was beneficial to reducing NOx emission. The probability of pulverized coal colliding with water wall decreased, which was beneficial to reducing the possibility of coking. The calculation results show that NOx concentration at the exit of the furnace was significantly reduced. The study provided a direction for the actual retrofit of the burners. © 2019 Chin. Soc. for Elec. Eng.

引用

页码：2376 / 2383

页数：7

共 28 条

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