130吨每小时循环流化床锅炉设计毕业设计

目 录

设计说明书 ........................................ 1

1 燃料和脱硫剂 ................................................................................. 1

1.1 燃料 ................................................................................................... 1 1.2 脱硫剂 ............................................................................................... 1

2 锅炉性能预计 ................................................................................. 1

2.1 SO2排放浓度 ..................................................................................... 2 2.2 碳的燃尽度 ....................................................................................... 2

3 灰平衡与灰循环倍率 ..................................................................... 2

3.1 灰循环倍率 ....................................................................................... 3

4 脱硫工况时的物质平衡与热平衡 .................................................. 3

4.1 燃烧和脱硫的化学反应式 ............................................................... 3 4.2 当量灰分 ........................................................................................... 4 4.3 灰比换算 ........................................................................................... 5 4.4 当量理论空气量 ............................................................................... 6 4.5 燃烧和脱硫产生的烟气量 ............................................................... 6

5 脱硫对循环流化床锅炉热效率的影响 .......................................... 8

5.1 对q4的影响 ....................................................................................... 8 5.2 对q2的影响 ....................................................................................... 9

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5.3 对q6的影响 ....................................................................................... 9

6 燃烧产物热平衡方程式 ................................................................. 9

6.1 灰循环倍率 ....................................................................................... 9 6.2 炉膛有效放热量 ............................................................................. 10 6.3 炉膛放热份额 ................................................................................. 10 6.4 循环灰焓增 ..................................................................................... 11 6.5 分离器热平衡 ................................................................................. 11

7 炉膛及EHE的传热系数 ............................................................... 12

7.1 炉膛受热面传热周界 ..................................................................... 12 7.2 鳍片传热系数 ................................................................................. 14

8 循环流化床锅炉机组热力计算.................................................... 14

8.1 锅炉机组热平衡及燃料和脱硫剂消耗量的计算 .......................... 14 8.2 炉膛热力计算 ................................................................................. 17

9 炉膛 ............................................................................................... 17

9.1 回料器风室压力 ............................................................................. 18

10 风、烟系统 ................................................................................. 18

10.1 旋风分离器烟气阻力计算 ........................................................... 18 10.2 进口烟道阻力 ............................................................................... 19 10.3 旋风分离器本体阻力 ................................................................... 22

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10.4 出口烟道阻力 ............................................................................... 24

11 尾部受热面 ................................................................................. 24

11.1 过热器 ........................................................................................... 24 11.2 省煤器 ........................................................................................... 25 11.3 空气预热器 ................................................................................... 27

12 总结 ............................................................................................. 28 13 计算结果汇总 ............................................................................. 30

13.1 基本数据 ....................................................................................... 30 13.2 燃烧脱硫计算 ............................................................................... 31 13.3 130t/hCFB锅炉热力计算 .............................................................. 36 13.4 结构计算 ....................................................................................... 42 13.5 热力计算 ....................................................................................... 45 13.6

130t/hCFB

旋风分离器烟气阻力计算 ........................................... 51

13.7 炉膛风室压力计算 ....................................................................... 58 13.8 回料器设计计算 ........................................................................... 61 13.9 对流受热面设计计算 ................................................................... 67 13.10 锅炉热平衡计算误差校核 ......................................................... 79

文献阅读及译文 ............................................................................... 82

主要参考文献 ..................................... 93

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附录 ............................................. 94

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