| 循环流化床布风方式对颗粒循环流率的影响 |
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| 引用本文： | 陈鸿伟,杨新,尹猛,成岭. 循环流化床布风方式对颗粒循环流率的影响[J]. 动力工程, 2012, 0(10): 760-764,791 |
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| 作者姓名： | 陈鸿伟 杨新 尹猛 成岭 |
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| 作者单位： | 华北电力大学能源动力与机械工程学院,保定071003 |
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| 基金项目： | 国家自然科学基金资助项目（50876030） |
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| 摘 要： | 在带中心提升管的内循环流化床冷态试验台上，针对锥形和平板形2种布风板布置方式下各控制参数对循环流率的影响进行了试验研究．结果表明：锥形布风板上的临界全部流化速度明显大于物料临界流化速度；随着气化室和提升管内风速的增加，循环流率增大，但增大的速率逐渐降低；气化室和提升管内风速以及料层高度对锥形布风板下循环流率的影响大于平板形布风板，但是物料粒径对锥形布风板循环流化床循环流率的影响却小于平板形布风板．
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| 关 键 词： | 循环流化床 布风板方式 循环流率 料层高度 物料粒径 临界流化速率 |
Effect of Air Distribution Mode on Solids Circulation Rate in a Circulating Fluidized Bed |
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| CHEN Hong-wei,YANG Xin,YIN Meng,CHENG Ling. Effect of Air Distribution Mode on Solids Circulation Rate in a Circulating Fluidized Bed[J]. Power Engineering, 2012, 0(10): 760-764,791 |
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| Authors: | CHEN Hong-wei YANG Xin YIN Meng CHENG Ling |
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| Affiliation: | (School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China) |
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| Abstract: | Effects of various factors on solids circulation rate in the riser of a CFB were studied on a coldstate test rig respectively with cone and panel type air distributors. Results show that when a cone distributor is used, the minimum complete fluidizing velocity is significantly higher than the minimum fluidizing velocity. The solids circulation rate grows with rising speed of air in both the gasification chamber and the riser, and the growth rate reduces gradually. The air speed and bed material height under cone distributor mode play a more important role in influencing the solids circulation rate than that under panel distributor mode; however, the particle size of bed material acts just in an opposite way. |
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| Keywords: | CFB distributor type circulation rate bed material height particle size of bed material minimum fluidizing velocity |
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