| 加压密相粉煤输送特性及稳定性研究 |
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| 引用本文： | 梁财,陈晓平,赵长遂.加压密相粉煤输送特性及稳定性研究[J].工程热物理学报,2009,30(10). |
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| 作者姓名： | 梁财 陈晓平 赵长遂 |
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| 作者单位： | 东南大学热能工程研究所,江苏南京,210096 |
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| 基金项目： | 国家重点基础研究发展计划 |
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| 摘 要： | 在高压气力输送试验台上,用氮气进行煤粉高压浓相气力输送试验研究.考察操作参数和粉体物性对煤粉质量流量和固气比等气力输送特征参数的影响,用信息熵分析试验过程中采集到的差压波动时间序列,建立信息熵和流动特性之间的关联.结果表明流动相图与SHANNON熵之间呈现较好的规律性.随着煤粉含水率的增大,煤粉的质量流量和压损减小,SHANNON熵值下降.随着输送压损的增大,SHANNON熵增大.
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| 关 键 词： | 气力输送 高压 固气比 SHANNON熵 |
INVESTIGATION OF FLOW CHARACTERISTICS AND STABILITY OF DENSE-PHASE PNEUMATIC CONVEYING OF PULVERIZED COAL AT HIGH PRESSURE |
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| LIANG Cai,CHEN Xiao-Ping,ZHAO Chang-Sui.INVESTIGATION OF FLOW CHARACTERISTICS AND STABILITY OF DENSE-PHASE PNEUMATIC CONVEYING OF PULVERIZED COAL AT HIGH PRESSURE[J].Journal of Engineering Thermophysics,2009,30(10). |
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| Authors: | LIANG Cai CHEN Xiao-Ping ZHAO Chang-Sui |
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| Institution: | LIANG Cai CHEN Xiao-Ping ZHAO Chang-Sui (State Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China) |
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| Abstract: | Experiments of dense-phase pneumatic conveying of pulverized coal with nitrogen are carried out in an experimental test facility.The influences of the moisture content,the superficial velocity and the pressure on mass flow rate and solid-gas ratio are investigated.SHANNON entropy analysis of pressure drop fluctuation time series is developed to reveal the flow characteristics.Based on the distribution of the SHANNON entropy in the different conditions,the flow stability and the evolutional tendency of SHANN... |
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| Keywords: | pneumatic conveying high pressure solid-gas ratio SHANNON entropy |
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