| 大型单射流流化床的流动特性 |
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| 引用本文： | 郭庆杰,杨常玲,张锴,张济宇,刘振宇.大型单射流流化床的流动特性[J].过程工程学报,1999,20(3):3. |
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| 作者姓名： | 郭庆杰 杨常玲 张锴 张济宇 刘振宇 |
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| 作者单位： | 1. 中国科学院山西煤化所煤转化国家重点实验室,太原,030001
2. 太原理工大学,太原,030024 |
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| 基金项目： | 国家自然科学基金!29476262，中科院山西煤化所所长基金 |
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| 摘 要： | 在φ500mm×8000mm的大型单射流半圆形流化床中，采用内径为42mm的半圆形射流管，以小米为实验物料，利用摄像法研究了射流气速、静床高度与射流深度的关系，得出了射流深度的定量关联式．藉PC—4光导纤维测浓仪，研究了大型射流流化床径向、轴向空隙率分布规律，最后得出了射流区各点空隙率分布的定量关系式．
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| 关 键 词： | 大型射流流化床 射流深度 空隙率 |
| 修稿时间： | :1998-06-1 |
FLOW CHARACTERISTICS IN A LARGE JETTING FLUIDIZED BED |
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| GUOQingjie,YANGChangling,ZHANGKai,ZHANGJiyu,LIUZhenyu.FLOW CHARACTERISTICS IN A LARGE JETTING FLUIDIZED BED[J].Chinese Journal of Process Engineering,1999,20(3):3. |
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| Authors: | GUOQingjie YANGChangling ZHANGKai ZHANGJiyu LIUZhenyu |
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| Abstract: | In a 500 mm diameter and 8000 mm high cold flow semicircular colunmwith millet as fluidized material, penetration depth was recorded by a National M-7 videocamera and analyzed frame by frame on a Panasonic HD-100 player. Experimelltal resultsindicate that penetration depth increases with the increase of jetting velocity, and static bedheight has no effect on penetration depth. A penetration depth correlation for the large jettingfluidized bed was proposed. Meanwhile, voidage distribution along radial and allal directionswas investigated using a PC-4 optical fiber probe. Based on the experimental data, an empiricalcorrelation of bed voidage was presented. |
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| Keywords: | Large jetting fluldized bed Penetration depth Voidage |
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