回转窑筒体热损失测量系统的研究  

Research on heat loss measurement system for rotary kiln shell

作　　者：张荣 刘小燕[1] 武伟宁 鲁新月 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082

出　　处：《电子测量与仪器学报》2017年第11期1843-1848,共6页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(61374149);高等学校博士学科点专项科研基金(20130161110010)资助项目

摘　　要：以回转窑筒体的红外热图为基础,通过分析回转窑筒体辐射与对流机理,给出了实际回转筒体热损失的计算模型,并采用Lab VIEW编程语言,设计开发了一套回转窑筒体热损失测量软件。最后,以某水泥回转窑为例,对所提出的方法进行了测试与分析。结果表明,该系统能获取筒体感兴趣区域的轴向温度并正确计算出对应的筒体热损失功率;筒体的辐射热耗与对流热耗大小相当,且煅烧区筒体的热损失约占输入热功率的4%。研究成果为回转窑的节能生产、过程参数优化奠定了基础。A system based on the infrared image and the heat transfer mechanism of radiation and convection is developed to measure the heat loss of rotary kiln through the kiln shell, with which the models of the total heat loss is derived for heat loss calculation. By using LabVIEW programming language, a software is then developed to measure the heat loss. The effectiveness of the proposed method is tested by using a cement rotary kiln as example. It is shown that, the system is able to capture the axial temperature of the kiln shell of interest and calculates the corresponding heat loss correctly. It is also found that the heat loss through radiation has similar magnitude to the heat loss through convection, and the heat loss in the burning zone is about 4% of the total input thermal energy into the kiln. The result of the present work has potential usage in the energy-saving production and optimization of process parameters.

关 键 词：回转窑 红外热图 热损失 传热模型 

分 类 号：TQ172.622[化学工程—水泥工业] TP311.52[化学工程—硅酸盐工业]