基于水分和当量电负荷双特征的锅炉煤质在线监测技术研究  

Study on Coal Quality Components on-line Monitoring Technology based on Double Characteristics with Moisture and Equivalent Electricity Load

作　　者：梁绍华[1] 陈学文 孙栓柱[2] 金娴 王真 郭鹏程 LIANG Shao-hua CHEN Xue-wen SUN Shuan-zhu et al

机构地区：[1]南京工程学院 [2]江苏方天电力技术有限公司

出　　处：《电站系统工程》2017年第5期5-7,共3页Power System Engineering

基　　金：南京工程学院科研基金项目(YKJ201408)资助;南京工程学院校企合作基金项目(214145214301581)资助

摘　　要：根据配置中速磨煤机制粉系统机组的特点,建立基于制粉系统热平衡原理的原煤水分在线计算模型,同时依据每台磨煤机煤量变化、机组负荷变化及锅炉蓄热变化的相关性建立原煤当量电负荷计算模型。通过水分和当量电负荷两个特征量建立和检索煤质数据库可实现锅炉运行煤质在线监测。研究结果表明,模型计算结果合理,具有较好的稳定性和分辨率,可以监测煤质变化情况,指导锅炉燃烧优化运行。According to the characteristics of units with medium speed coal pulverizer, the coal moisture on-line calculation model is established basing on the heat balance principle of of the coal pulverizing system. At the same time, according to the change of coal quantity, the unit load and the boiler heat storage the calculation model of equivalent electricity load is set up. The on-line monitoring of coal quality components can be realized by establishing and retrieving the coal quality database by double characteristics with moisture and equivalent electricity load. Research results show that the calculation results of model are reasonable with high stability and resolution and coal quality change can be identified which can provide guidance for combustion optimization of boiler.

关 键 词：原煤水分 当量电负荷 中速磨煤机 煤质成分 在线监测 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]