生物质燃烧炉烟道结构优化研究  

Research on the optimization of biomass combustion furnace flue structure

作　　者：李震[1] 段冀伟 庞赟佶[2] LI Zhen;DUAN Jiwei;PANG Yunji(School of Mechanical Engineering,Inner Mongolia University of Science&Technology,Baotou 014010,China;School of Energy and Environment,Inner Mongolia University of Science&Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学机械工程学院,内蒙古包头014010 [2]内蒙古科技大学能源与环境学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2025年第1期35-40,共6页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然科学基金(51666016;52366018);内蒙古自治区自然科学基金(2020LH05020)。

摘　　要：针对生物质炉具烟道结构综合热效率低下的问题展开研究工作。由于生物质燃料燃烧主要是挥发分的燃烧,挥发分燃烧速率十分快速,为保留热量、提高综合热效率,提出一种改进型的烟道结构。烟道结构由8层的回字型改为保留最后一层的回字型、前7层之间由8个圆柱通道的交错连接结构。以某公司某型号设计的回字型烟道生物质燃烧炉为研究对象,利用CFD模拟技术对生物质炉具原始结构和改进后的结构进行燃烧模拟。优化烟道结构之后炉具烟道出口的平均温度从780 K下降到了650 K,提高了炉具综合热效率。The research work is carried out on the problem of low comprehensive thermal efficiency of biomass stove flue structure.Since the combustion of biomass fuel mainly involves the burning of volatiles,which burn at a very fast rate,an improved flue gas structure has been proposed to retain heat and improve overall thermal efficiency.The structure of the flue is changed from an octagonal shape with 8 layers to retaining only the last layer’s octagonal shape,with the first 7 layers interconnected by 8 cylindrical channels in an alternating pattern.In this research,a biomass combustion furnace with a traditional octagonal flue structure designed by a certain company for a specific model was taken as the research object.The CFD simulation technology was used to simulate the combustion of the original structure and the improved structure of the biomass furnace.After optimizing the flue structure,the average temperature at the flue outlet of the furnace was decreased from 780 K to 650 K,which improved the comprehensive thermal efficiency of the furnace.

关 键 词：生物质 数值模拟 结构优化 温度场 

分 类 号：TK6[动力工程及工程热物理—生物能]