600MW燃煤锅炉烟气系统优化减阻技术应用与仿真研究  

Application and Simulation of LYCTWA Type Adherent Wind in Wall Type Opposed Boiler

作　　者：武学谦 方永旭 杜永斌 杨天亮 张超群 孙鹏宵 WU Xue-qian;FANG Yong-xu;DU Yong-bin(Yantai Longyuan Electric Power Technology Co.,Ltd.)

机构地区：[1]烟台龙源电力技术股份有限公司,山东烟台264000

出　　处：《电站系统工程》2022年第4期43-45,47,共4页Power System Engineering

摘　　要：针对某电厂600MW超临界燃煤锅炉机组运行中引风机能耗偏高的问题,以系统工程理念出发,采取CFD仿真软件对烟道系统进行1:1全尺寸仿真模拟工作,通过对关键区域增设导流装置,能够很好地合理化流场分布,减少局部动能耗散,降低烟气系统整体运行阻力。改造后第三方性能测试结果表明:在BMCR工况下,相比改造前,改造后的电除尘入口段和引风机出口段烟道的阻力分别降低579 Pa和257 Pa,其中电除尘入口段全压降相比改造前降幅达到50%以上;改造后两侧引风机电耗进一步降低,烟气系统各辅机运行参数正常,锅炉运行安全稳定。该技术施工周期短且经济性良好,投资回收期不足3年。Aiming at the problem of high energy consumption of induced draft fan in the operation of 600MW supercritical coal-fired boiler unit of a power plant, starting from the concept of system engineering, CFD simulation software is adopted to conduct 1:1 full-size simulation of flue system. By adding diversion devices in key areas, flow field distribution can be rationalized well and local kinetic energy dissipation can be reduced. Reduce the overall operating resistance of flue gas system. The third-party performance test results after modification show that, under THE BMCR condition, the resistance of the flue in the inlet section of the electric dust removal and the outlet section of the induced draft fan after modification is reduced by 579 Pa and 257 Pa respectively, and the total pressure drop in the inlet section of the electric dust removal decreases by more than 50% compared with that before modification. After modification, the power consumption of induced draft fans on both sides is further reduced, the operation parameters of auxiliary machines of flue gas system are normal, and the boiler runs safely and stably. The construction period of this technology is short and economical, and the payback period is less than 3 years.

关 键 词：燃煤机组 烟气系统 仿真模拟 风机节能 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]