高水分、低热值褐煤机组锅炉大功率等离子点火特性数值模拟  

Numerical Simulation of High Power Plasma Ignition Characteristics of Lignite Unit Boiler with High Moisture and Low Calority

作　　者：闫金山 王建宇[1] 尚庆[2] YAN Jinshan;WANG Jianyu;SHANG Qing(College of Automalion,Nanjing University of Science and Technology,Nanjing 210094,China;China Aerospace Aerodynamic Technology Research Academy,Beijing 100074,China)

机构地区：[1]南京理工大学自动化学院,江苏南京210094 [2]中国航天空气动力技术研究院,北京100074

出　　处：《工业炉》2019年第6期18-23,共6页Industrial Furnace

摘　　要：以神华胜利发电厂内蒙古锡林浩特胜利煤田一号露天矿原煤为应用煤种,采用CFD计算模拟,在机组锅炉冷态启动点火参数条件下,分析大功率等离子点火特性,给出了不同横截面温度分布图、粒子运动轨迹图、燃烧器截面附近温度分布图、二氧化碳浓度分布图、流线与压力分布图。分析表明:采用功率为280 k W以上的等离子喷枪,在机组锅炉冷态启动参数条件下能够可靠点燃,对于实际工程运行具有指导意义。Taking raw coal of No.1 open pit in Shenhua Shengli Power Plant Inner Mongolia Xilinhot Shengli coal field as applied coal, and adopting CFD calculation and simulation, the characteristics of high power plasma ignition are analyzed under the condition of cold start-up ignition parameters of unit boilers.The temperature distribution maps of different cross sections, particle trajectory maps, temperature distribution maps near burner cross sections, carbon dioxide concentration distribution maps, streamline and pressure distribution maps are given. The analysis shows that the plasma spray gun with power over 280 kW can reliably ignite under the condition of cold start-up parameters of unit boilers, and it can be used for practical engineering operation.

关 键 词：褐煤 大功率等离子点火 锅炉冷态启动 温度分布 

分 类 号：TM621.2[电气工程—电力系统及自动化]