75 t/h循环流化床锅炉低氮增容改造研究  

Low NOx and Uprating Transformation of 75 t/h CFB Boiler

作　　者：成璞 周靖琳 李阳 韩建伟 CHENG Pu;ZHOU Jing-lin;LI Yang(Zhejiang SUPCON Technology Co.,Ltd.;Hangzhou Boiler Group Industrial Boiler Co.,Ltd;CHPI)

机构地区：[1]浙江中控技术股份有限公司 [2]杭州杭锅工业锅炉有限公司 [3]哈尔滨电站设备成套设计研究所有限公司

出　　处：《电站系统工程》2023年第5期80-82,共3页Power System Engineering

摘　　要：以75 t/h循环流化床锅炉为例,分析了锅炉的NOx初始排放量高、二次风设计不合理和分离器分离效率偏低的原因。结合锅炉设计结构特点及运行实际,提出了增设4片水冷屏、提高蒸发受热面能力;二次风重新布局设计;分离器分离效率提效改造措施。改造结果表明:经过改造后,锅炉负荷可以达到85 t/h长期稳定运行。NOx初始排放浓度多在150 mg/Nm 3以下,节约大量氨水。Take a 75t/h circulating fluidized bed boiler as an instance,identify the higher NOx emissions of the industrial boilers,unreasonable design of secondary air and the lower efficiency of the separator.Combine the design structure of the boiler and practical application,addition 4 pieces of water cooled panel,increase the ability of heat⁃absorbing sur⁃face,redesign the arrangement of secondary air;increase the efficiency of the separator.The application result after transform showed that the capacity of 75t/h boiler increased to 85t/h for long⁃term operation.The NOx emissions was keeping on lower than 150 mg/Nm 3,and save large amount of ammonia water.

关 键 词：流化床锅炉 低氮 增容 

分 类 号：X701[环境科学与工程—环境工程]