中国电机工程学报2011，Vol.31Issue(2)：15-21,7.
600 MW超临界旋流燃烧锅炉内温度声数值模拟及优化
Numerical Simulation and Optimization on Temperature Field of 600 MW Supercritical Swirl Combustion Boiler
刘建全 1孙保民 1白涛 1曾令艳 2孟顺 2李学颜1
作者信息
- 1. 电站设备状态检测与控制教育部重点实验室(华北电力大学),北京市,昌平区,102206
- 2. 哈尔滨工业大学燃烧工程研究所,黑龙江省,哈尔滨市,150001
- 折叠
摘要
Abstract
The combustion process of low NOx axial swirl burner (LNASB) was numerically studied in a 600MW supercritical boiler with realizable κ-ε model. The influence of secondary air flow and swirling intensity on the flow field and the distribution of temperature were studied. the different modification project of the burner was compared. The numerical simulation results had shown that the recirculation zone is hardly affected by the inner secondary air. The extended corner was impacted obviously by the external secondary air.Increasing the velocity of central air could enlarge the root distance of the recirculation zone. Increasing the flow and swirling intensity of the secondary air could make the flame deviation and adherence. The temperature nearby the burner nozzle increased significantly after turning off the center air.The best project is centrally fuel rich which could increase the distance between flame and nozzle. The comparison between the measured values and predicted results shows good agreement. By improving burners and adjusting combustion can settle the problem of malignant coking, it can provide some theoretical basis for the LNASB burner.关键词
旋流强度/低Nox轴向旋流燃烧器/数值模拟/可实现k-ε模型分类
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刘建全,孙保民,白涛,曾令艳,孟顺,李学颜..600 MW超临界旋流燃烧锅炉内温度声数值模拟及优化[J].中国电机工程学报,2011,31(2):15-21,7.
