文章基本信息

标题：Online adjustment of Furnace Exit Gas Temperature field using advanced infrared pyrometry: Case study of a 1500 MW utility boiler
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作者：J. Blondeau ; J. Van den Auweele ; S. Alimuddin 等
期刊名称：Case Studies in Thermal Engineering
印刷版ISSN：2214-157X
电子版ISSN：2214-157X
出版年度：2020
卷号：21
页码：1-7
DOI：10.1016/j.csite.2020.100649
出版社：Elsevier B.V.
摘要：The Furnace Exit Gas Temperature (FEGT) is a key parameter of the combustion process in utility boilers that needs to be accurately monitored, especially in order to increase their load- and fuel-flexibility. However, neither the average FEGT nor its spatial distribution over the boiler cross section can be measured using standard equipment. Advanced pyrometry provides an accurate and efficient way to monitor the FEGT: by combining the signals from several pyrometers installed around the boiler, the FEGT 2D field can be reconstructed. In this paper, we show the results of a measurement campaign carried out on a 1500 MW th boiler using a system comprising 9 infrared pyrometers. Thanks to online adjustments of the combustion air distribution, the FEGT peak initially observed has been reduced by approximately 100 o C, and the flame has been recentered.
关键词：Boiler ; Furnace exit gas temperature (FEGT) ; infrared pyrometry ; Load and fuel flexibilisation ; Hot spots ; Tube failures ; NOx