空气分级燃烧对再热汽温静态特性的影响  

Study on Effects of Air-Staging Combustion on the Static Characteristics of Reheat Steam Temperature

作　　者：黄香彬 龙涛 蒋宏利 魏铜生[4] 

机构地区：[1]神华国华清远发电有限责任公司,广东清远513000 [2]浙江国华浙能发电有限公司,浙江宁波315612 [3]南京南瑞集团公司节能环保分公司,江苏南京210003 [4]西安热工研究院有限公司,陕西西安710032

出　　处：《中国电力》2016年第11期124-128,共5页Electric Power

摘　　要：空气分级燃烧技术对炉膛燃烧和辐射换热过程有着明显影响,分析认为低负荷时再热汽欠温是由于主燃烧区烟温较高、辐射换热量较大引起的。理论分析和现场试验研究表明,优化锅炉运行氧量、炉膛-风箱差压设定值可以提高火焰中心高度,显著改善低负荷时再热汽欠温的状况,对指导空气分级燃烧的运行优化有一定的参考价值。The air-staging combustion has great impacts on furnace combustion and radiant heat exchanging processes. The analysis figures out that the reheat steam under temperature at low loads is attributed to high flue gas temperature and substantial radiant heat exchange volume in the main combustion zone. In addition, the theoretical analysis and the field tests indicate that the optimization of oxygen contents and furnace-windbox differential pressure may raise the reheat steam temperature, thus improving the performance of reheat steam under temperature at low loads. This paper may provide valuable reference for the operation optimization of boilers with air-staging combustion.

关 键 词：空气分级燃烧 炉膛出口烟温 再热汽温 运行氧量 二次风配风 

分 类 号：TM621.2[电气工程—电力系统及自动化]