CFB锅炉管式空预器改造为回转式空预器的可行性分析及应用  

Feasibility Analysis and Application of Transforming Tubular Air Preheater into Rotary Air Preheater in a CFB Boiler

作　　者：刘川 Liu Chuan(Dongfang Boiler Co.,Ltd.,Chengdu611731,China)

机构地区：[1]东方电气集团东方锅炉股份有限公司,成都611731

出　　处：《发电设备》2024年第5期328-334,共7页Power Equipment

摘　　要：通过对比管式空气预热器(简称空预器)与回转式空预器的性能,提出了将中小型循环流化床(CFB)锅炉管式空预器改造为回转式空预器的提质增效方案。针对某300 MW CFB锅炉,评估了空预器改造的可行性和技术方案,并且分析了改造前后的性能参数和经济效益。结果表明:将管式空预器改造为回转式空预器可以有效降低锅炉的排烟温度,并且可以长期保证漏风率和烟风阻力的稳定,满足节能降耗的需求,同时提高了机组运行的经济性和可靠性。By comparing the performance of tubular air preheater and rotary air preheater, a performance and efficiency improvement scheme was proposed to transform tubular air preheater into rotary air preheater for small and medium-sized circulating fluidized bed(CFB) boiler. For a 300 MW CFB boiler, the feasibility and technical scheme of air preheater transformation were evaluated, and the performance parameters and economic benefits before and after transformation were analyzed. Results show that, transforming the tubular air preheater into the rotary air preheater can effectively reduce the exhaust gas temperature of boiler, and ensure the stability of air leakage rate and flue gas resistance. This meets the needs of energy saving and consumption reduction, while improving the economy and reliability of unit operation.

关 键 词：CFB锅炉 管式空预器 回转式空预器 排烟温度 阻力 漏风率 

分 类 号：TM621.2[电气工程—电力系统及自动化] TK223.3[动力工程及工程热物理—动力机械及工程]