Numerical Simulation of Pulsed Jet Denitrification for SNCR

被引：0

作者：

Bo L. ^{[1
]}

Han K. ^{[1
]}

Qi J. ^{[1
]}

Niu S. ^{[1
]}

Ma C. ^{[2
]}

机构：

[1] Shandong Engineering Laboratory for High-efficiency Energy Conservation and Energy Storage Technology & Equipment, School of Energy and Power Engineering, Shandong University, Shandong Province, Jinan

[2] Shandong Leiden Energy Technology Co., Ltd., Shandong Province, Jinan

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2023年 / 43卷 / 07期

关键词：

numerical simulation; optimal design; pulsating spray; selective non-catalytic reduction(SNCR);

D O I：

10.13334/j.0258-8013.pcsee.213103

中图分类号：

学科分类号：

摘要：

With the selective non-catalytic reduction denitrification technology, the reducing agent ammonia or urea is directly sprayed into the flue gas without a catalyst, and the efficiency is often not very high. The mixing of the reducing agent and the flue gas is one of the key factors restricting the denitrification efficiency. Taking the secondary combustion chamber of a 90t/h layer burner as the research object, the Fluent software is used to numerically simulate the flue gas flow, heat and mass transfer, and denitrification reaction in the furnace. The reductant injection method is optimized without changing the ammonia-nitrogen molar ratio and the spray gun placement position. The research results show that the best denitrification effect can be obtained when the reducing agent adopts the pulsating velocity injection method and the spray gun angle is downward 45°. The uniformity index of ammonia is 0.549, and the denitrification efficiency reaches 58.13%. This research provides a theoretical basis and technical reference for the optimization of SNCR technology. ©2023 Chin.Soc.for Elec.Eng.

引用

页码：2771 / 2780

页数：9

共 25 条

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