大型CFB锅炉自主研制-中国电机工程学会.DOC

首台国产330MW循环流化床锅炉设计研究 孙献斌1 ,于龙2,时正海1 , 张彦军2 , 张缦2 , 黄中1 , 蒋敏华 (1.西安热工研究院有限公司，陕西省 西安市710032；2.哈尔滨锅炉厂有限责任公司，黑龙江省 哈尔滨150040;中国华能集团公司，北京，100031） Research and Design of First domestic proprietary 330MW CFB boiler Sun Xianbin1 Yu Long2 Shi Zhenghai1 Zhang Yanjun2 Zhang Man2 Huang Zhong1 Jiang Minhua3 (1.Thermal Power Research Institute, Xi’an 710032, Shaanxi Province, China；2.Harbin bolier CO., Ltd., Harbin 150046, Heilongjiang Province, 3.China Huaneg group,Beijing,100031；) 摘要：在开展了和数值模拟最大CFB锅炉 关键词：循环流化床锅炉；大型化；紧凑式分流式回灰换热器；工程示范 ABSTRACT：Besed on research and manufacture of first domestic proprietary 210 MW circulating fluidized bed (CFB）boiler, the key technologies of large CFB boiler have been Research systematically, the plan design of domestic proprietary 330 MW CFB boiler have been performed , construction design of key components and scaling up characteristics were analysised and simulated, The first domestic proprietary 330 MW CFB boiler designed demonstration project has been put into commercial operation, It is the largest capacity CFB boiler operated in china now,Operation of 330 MW CFB boiler was stable and good performance has been proved. KEY WORDS: circulating fluidized bed boiler；scaling up；Compact ash-flow splitting and heat exchanger；demonstratio n  1 国产330 MW CFB锅炉方案设计 西安热工研究院（TPRI）（HBC）0MW CFB锅炉结构如图1，安装于江西分宜发电厂。锅炉整体布置采用H型紧凑结构，四个旋风分离器分置于炉膛两侧，330MW CFB锅炉45%燃烧所需的空气通过燃烧室底部的水冷布风板进入炉内，布风板上采用大直径迴流式风帽，在分宜发电厂210MWCFB锅炉上3年的运行经验表明，该型风帽具有耐磨性好、防堵塞和防漏灰的显著优点[4]。布风板上部空床速度设计值大于4.8m/s，以保证较大颗粒能处于良好流化状态。 锅炉炉膛为单炉膛结构，四周由膜式水冷壁构成。炉膛水冷壁管径为Ф57×5.6，下部锥段为密相区和过渡区，上部直段为稀相区。炉膛内与后墙垂直布置屏式过热器，整个炉膛为 全悬吊结构。 D t/h 1025 1025 主蒸汽压力 pgr MPa 18.6 18.6 主蒸汽温度 tgr ℃ 543 543 再热蒸汽流量 Dzr t/h 929 929 再热蒸汽进口压力 Pzr1 MPa 4.49 4.29 再热蒸汽出口压力 Pzr2 MPa 4.26 3.86 再热蒸汽进口温度 tzr1 ℃ 340 337 再热蒸汽出口温度 tzr2 ℃ 543 543 给水温度 tgs ℃ 259 254 锅炉热效率 ηgl % 90 90.3 排烟温度 θpy ℃ 135 134 一次风温 trk1 ℃ 280 303 二次风温 trk2 ℃ 280 292 NOx排放值 CNOx mg/m3 235 140 SO2排放值 CSO2 mg/m3 390 370 最低不投油稳燃负荷 BMLR %BMCR