摘要
排烟热损失是锅炉各项热损失的重要组成部分,以某600 MW燃煤机组为研究对象,阐述了烟气余热深度利用改造的原则,提出了分别采用钢材和氟塑料的两级换热技术方案,进行了系统的设计和参数的计算。该项目改造后可降低煤耗2.5 g/(kW·h),同时改善了电除尘效率和湿法脱硫水耗指标,具有良好的经济效益和社会效益。
The heat loss of exhaust gas has a significant impact on the boiler thermal efficiency.For a 600 MW coal-fired unit,the renovation principle and technology scheme of deep utilization of waste heat from flue gas is proposed in the paper.The waste heat recovery system contains a two-stage heat exchanger,which is made of steel and fluoroplastic,and the key parameters are also analyzed in the paper.The project could reduce the coal consumption rate by 2.5 g/(kW·h).Meanwhile,the efficiency of electric dust removal and the water consumption rate of wet flue gas desulfurization is improved.The project has good economic and social benefits.
作者
朱斌帅
宁玉琴
蒋文
曹荣
却燕平
许青云
ZHU Binshuai;NING Yuqin;JIANG Wen;CAO Rong;QUE Yanping;XU Qingyun(Huadian Electric Power Research Institute Co,. Ltd., Hangzhou 310030, China;Hangzhou Huadian Energy Engineering Co,. Ltd., Hangzhou 310030, China)
出处
《锅炉技术》
北大核心
2021年第1期69-73,79,共6页
Boiler Technology
关键词
余热回收
深度利用
氟塑料
低低温省煤器
waste heat recovery
deep utilization
fluoroplastic
low temperature coal economizer
