1000 MW超超临界机组煤粉在线监测技术研究  

ON-LINE MEASUREMENT OF PULVERIZED COAL IN 1000 MW ULTRA SUPERCRITICAL UNIT

作　　者：贾志海[1] 范学良[1] 李俊峰[1] 蔡小舒[1] 刘继则 丛晓 贾敬臣 

机构地区：[1]上海理工大学动力学院颗粒与两相流测量技术研究所,上海200093 [2]华电国际电力股份有限公司邹县发电厂,山东邹城273522

出　　处：《工程热物理学报》2009年第2期257-260,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No．50706029);863项目(No．2006AA03Z349);上海高校选拔培养优秀青年教师科研专项基金;上海理工大学博士科研启动基金

摘　　要：超超临界机组锅炉煤粉管道和磨煤机的运行状况对电厂的安全经济运行有着重要的影响,但一直缺少有效的监测手段。基于光脉动法对煤粉浓度和细度进行了测试,并利用互相关原理测试了煤粉速度。研制了煤粉在线监测系统,对山东邹县发电厂1000 MW超超临界机组对冲燃烧锅炉48根煤粉管道内煤粉浓度、细度以及速度参数进行了在线测试。实验结果表明,研制的监测系统能够对上述参数进行实时准确测量,实现了对磨煤机的工作状态以及锅炉炉膛内火焰燃烧均衡状况的评估,从而为机组的安全稳定运行提供了重要依据。Running conditions of pulverized coal pipes and mills are of greatly effecting on the combustion and safely operation of utilities in coal-fired power plants. However, there are less effective on-line measurement ways. Based on light fluctuation method, the on-line measurement of size and concentration of pulverized coal were presented in this work. Moreover, the velocity of pulverized coal in pipes was measured by cross correlation method. A novel on-line monitoring system was designed with the above principles. The system was applied to measure pulverized coal pipes and mills in-situ in a 1000 MW ultra supercritical unit. The unit had 48 pulverized coal pipes and adopted three-layer opposed firing pattern. The experimental results showed the on-line monitoring system can simultaneously measure the size, concentration and velocity of pulverized coal in different coal pipes accurately and quickly. Therefore, a practical method and instrument for on-line monitoring technology of pulverized coal pipes and mills were provided.

关 键 词：超超临界机组 煤粉 脉动法 互相关法 在线监测 

分 类 号：O359.1[理学—流体力学]