Modelling pulverised coal combustion using a detailed coal combustion model

被引:111
作者
Backreedy, RI [1 ]
Fletcher, LM [1 ]
Ma, L [1 ]
Pourkashanian, M [1 ]
Williams, A [1 ]
机构
[1] Univ Leeds, Energy & Resources Res Inst, Sch Proc Environm & Mat Engn, Ctr Computat Fluid Dynam, Leeds LS2 9JT, W Yorkshire, England
基金
英国工程与自然科学研究理事会;
关键词
pulverised coal combustion; low-NO(x) burner; CFD modeling; char burnout model;
D O I
10.1080/00102200500248532
中图分类号
O414.1 [热力学];
学科分类号
摘要
The ability to assess the combustion behaviour of internationally traded coals and accurately predict flame characteristics, stable species concentration, unburned carbon and pollutant emissions is of importance to the power generating industry. Despite recent advances in coal combustion modelling detailed understanding is still lacking on the exact role of the coal maceral content on the combustion process. Here, a CFD-based coal combustion model that includes these effects has been developed to try to improve the predictive capability. A computational simulation of a 1MW (thermal), pulverised fuel combustion test furnace, which was designed to replicate the time-temperature history of a full-scale furnace, was performed. This furnace also contained a triple-staged low-NO(x) swirl burner. A number of simulations were made using a number of coals in order to calculate NO(x) and the unburned carbon-in-ash, the latter being a sensitive test for the accuracy of the char combustion model.
引用
收藏
页码:763 / 787
页数:25
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