600MW燃煤锅炉烟道流场优化改造研究  

Research on optimization and modification of flue flow field of 600MW coal-fired boiler

作　　者：高志勇 GAO Zhiyong(China Energy Group Chenjiagang Power Generation Co.,Ltd.,Yancheng 224000,China)

机构地区：[1]国能陈家港发电有限公司,江苏盐城224000

出　　处：《中国高新科技》2023年第17期113-115,共3页

摘　　要：文章采用数值模拟方法对某电厂600MW燃煤锅炉尾部烟道进行了流场分析,考察了烟道不同截面速度场和沿程阻力分布,提出了合理的流场优化改造方案。模拟计算和改造后的实测效果分析表明:优化设计后锅炉空预器出口至低温省煤器入口段烟道阻力降低了230~250Pa,电除尘器出口至引风机入口段烟道阻力降低了90~100Pa;两侧低温省煤器入口烟道的烟气流量及入口烟气流速分布的均匀性得到提升,整体尾部烟道阻力实测降低336Pa,极大地降低了引风机运行能耗。This paper applied the numerical simulation method to analyze the flow field of the tail flue of a 600MW coal-fired boiler in a power plant,investigated the distribution of resistance along the way and the velocity field of different sections of the flue,and a reasonable flow field optimization and transformation plan was proposed accordingly.The analysis after the transformation based on the numerical simulation and the measurement showed that the flue resistance from the outlet of the boiler air preheater to the inlet of the low-temperature economizer was reduced by 230-250 Pa after the optimization,and the flue resistance from the outlet of the electrostatic precipitator to the inlet of the induced draft fan was reduced by 90-100Pa.Moreover,the flue gas flow at the inlet flue of the low-temperature economizer on both sides and the uniformity of the inlet flue flow velocity distribution were improved.The measured resistance of the overall tail flue was reduced by 336Pa,which greatly reduces the energy consumption of the induced draft fan.

关 键 词：尾部烟道 降阻 数值模拟 节能 

分 类 号：TM621[电气工程—电力系统及自动化]