Modeling of pulverized coal and biomass co-firing in a 150 KW swirling-stabilized burner and experimental validation
Modeling of pulverized coal and biomass co-firing in a 150 KW swirling-stabilized burner and experimental validation
复制标题
150 KW 旋流稳定燃烧器中煤粉和生物质混烧的建模和实验验证
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Søren Lovmand Hvis
中科院分区：
文献类型：
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作者：
C. Yin;S. Kær;L. Rosendahl;Søren Lovmand Hvis
对150 kWFuel旋流稳定燃烧器中煤粉和生物质的混烧进行了全面的CFD模拟研究，该燃烧器的流型与典型的低NOx燃烧器相似。本研究的目的是获得一个可靠的建模方法，设计和优化的低NOx燃烧器混烧煤粉和生物质。为此，网格的效果，全球反应机制均匀燃烧，湍流模型，化学相互作用，固体燃料的性质，和固体燃料颗粒转换模型进行了细致的检查。建模结果进行了比较，详细映射的摩尔分数的主要物种，从FT-IR和堀场气体分析仪。本文主要介绍了在煤粉与生物质混燃模型中，不同的全局均质燃烧机理和不同的固体燃料颗粒转化模型的比较。
A comprehensive CFD modeling study has been undertaken to investigate the co-firing of pulverized coal and biomass in a 150 kWFuel swirl-stabilized burner, which is similar in flow pattern to a typical low-NOx burner. The objective of the present study is to derive a reliable modeling methodology for design and optimization of low NOx burners co-firing pulverized coal and biomass. For this purpose, the effects of meshes, global reaction mechanisms for homogeneous combustion, turbulence models, turbulence-chemistry interactions, properties of the solid fuels, and solid-fuel particle conversion models are finely examined. The modeling results are compared with detailed mapping of molar fractions of main species, obtained from FT-IR and a Horiba gas analyzer. This paper presents mainly the comparison of different global homogenous combustion mechanisms and different solid-fuel particle conversion models, in modeling of pulverized coal and biomass co-combustion.