蓄热式加热炉中温度场分析  

Analysis on temperature distribution in regenerative furnace

作　　者：刘赵淼[1] 郝海舟[1] 叶红玲[1] 马重芳[2] 

机构地区：[1]北京工业大学机电学院,北京100022 [2]北京工业大学环境与能源工程学院,北京100022

出　　处：《安全与环境学报》2006年第6期97-100,共4页Journal of Safety and Environment

基　　金：国家973课题"高效节能的关键科学问题"资助项目(G200026309);北京市科委科技新星项目"蓄热式高温低氧空气燃烧系统的动力学分析";北京市教委科技发展项目"互补型蓄热高温空气燃烧系统的动力学分析"

摘　　要：以一套蓄热式加热炉为物理模型,数值分析了加热过程中燃气速度、助燃空气速度、助燃空气预热温度以及助燃空气中氧含量对加热炉中钢坯附近区域温度场分布的影响,得出了这些因素对加热炉中钢坯位置附近温度的影响情况与影响规律。研究结果将为蓄热式加热炉在我国的推广与设计提供技术参数和参考模型。The present paper is concerned with the selection of industrial heating furnace model and an analysis of the temperature distribution in vicinity of billet in the industrial furnace area. As is known, high temperature air combustion （HTAC） technology, working on its preheated air at over 1 000 ℃ and oxygen below 10% has drawn ever increasing attention in many application fields since it sprang up internationally in 1990s. The reason for its wide application is that it can help its users with the simultaneous reduction of carbon dioxide and oxides of nitrogen emissions and approximately 30% energy saving and 25 % reduction in the physical size of the installation as compared with the traditional furnaces. This paper takes an industrial heating furnace model as a physical, model with its focus on the analy- sis of the influence of air-filling speed, air preheating temperature, oxygen concentration and fuel-feeding speed on the temperature distribution in vicinity of billet respectively. With the increase of air-filling speed and oxygen concentration, the furnace temperature at the auxiliary surface rises. However, with the increase of fuel-feeding speed and the rise of the preheating air temperature, the furnace temperaturc on the compensating surfaces comes to balance. The distribution of temperature fields can thus be made uniform with the average temperature difference between the highest and lowest becomes so small as to meet the demands of the practical technological conventions by adjusting the preheating air temperature, air-filling speed, oxygen concentration and fuel-feeding speed under the condition of loweroxygen but high-temperature air combustion. Therefore, the analysis results can provide a valuable reference to the designers and innovators of the present and future industrial heating furnaces.

关 键 词：计算流体力学 蓄热式加热炉 温度场 数值分析 

分 类 号：TK01[动力工程及工程热物理]