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280吨循环流化床设计_毕业设计.doc

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PAGE 280t/h燃煤循环流化床锅炉设计山东建筑大学毕业设计说明书 PAGE IV 目录 TOC \o 1-3 \h \z \u 摘要·································································Ⅲ ABSTRACT····························································Ⅳ 1 绪论·································································1 1.1国内外CFB锅炉发展及现状·············································1 1.1.1 国内CFB锅炉发展·················································1 1.1.2国外CFB锅炉发展··················································1 1.2 循环流化床锅炉优缺点················································1 2 锅炉结构和设计简介··················································3 2.1 原始资料····························································3 2.2 煤的元素分析数据校核和煤种判别······································3 2.2.1 煤的元素分析数据校核·············································3 2.2.2 煤种判别·························································4 2.3 锅炉的整体布置······················································4 3 220t/hCFB锅炉热力计算··············································6 3.1 锅炉燃烧产物和锅炉热平衡计算········································6 3.1.1 燃烧产物计算·····················································6 3.1.2 无脱硫工况计算···················································6 3.1.3 有脱硫工况计算···················································8 3.1.4 烟气特性计算表··················································11 3.1.5烟气焓温计算表···················································12 3.2 锅炉热平衡及燃烧和石灰石消耗量计算·································12 3.3炉膛与汽冷屏设计及热力计算··········································15 3.3.1 炉膛结构设计及计算··············································15 3.3.2 炉膛水冷壁传热计算··············································18 3.3.3 汽冷屏结构设计及计算············································21 3.3.4 汽冷屏传热计算··················································22 3.3.5 锅炉炉膛整体热力计算············································25 3.4 汽冷旋风分离器设计及热力计算·······································29 3.4.1 旋风分离器结构计算···········································