| 加压粉煤气力输送试验研究 |
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| 引用本文： | 王巍,管清亮,张建胜.加压粉煤气力输送试验研究[J].清华大学学报(自然科学版),2011(2):277-281. |
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| 作者姓名： | 王巍 管清亮 张建胜 |
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| 作者单位： | 清华大学热能工程系热科学与动力工程教育部重点实验室; |
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| 摘 要： | 通过建立加压粉体气力输送试验系统并进行加压粉煤气力输送试验,重点考察了表征气速、输送背压和粉体流量对管道压损的影响。结果表明:不同输送背压和粉煤流量下,粉煤加速压降、垂直到水平弯管、水平到垂直弯管和水平弯管压损与粉体流量Gs和表征气速Ug的乘积呈近似线性关系,其中水平到垂直弯管压损随GsUg变化最大;水平、垂直和倾斜管段附加压损随着表征气速的增加而逐渐减小,粉煤流量比输送背压对附加压损影响更大;附合压损系数是Re、Fr和气固比μ的函数,通过拟合得到的附加压损公式和总压损公式的预测值也与试验值吻合均良好。
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| 关 键 词： | 气力输送 粉煤 加压 压损 管道 |
Experimental study of dense-phase pneumatic conveying of pulverized coal at elevated pressures |
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| WANG Wei,GUAN Qingliang,ZHANG Jiansheng.Experimental study of dense-phase pneumatic conveying of pulverized coal at elevated pressures[J].Journal of Tsinghua University(Science and Technology),2011(2):277-281. |
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| Authors: | WANG Wei GUAN Qingliang ZHANG Jiansheng |
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| Institution: | WANG Wei,GUAN Qingliang,ZHANG Jiansheng(Key Laboratory for Thermal Science and Power Engineering of the Ministry of Education,Department of Thermal Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | The pressure losses along the pipeline during pneumatic conveying of pulverized coal at elevated pressures were studied experimentally for various superficial velocities,Ug,conveying back pressures and mass solid flow rates,Gs.The results showed that the pressure losses due to acceleration and in vertical-to-horizontal bends,horizontal-to-vertical bends and horizontal bends in the pipeline increased approximately linearly with the product of the superficial velocity and the mass solid flow rate,GsUg,with th... |
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| Keywords: | pneumatic conveying pulverized coal elevated pressure pressure loss pipeline |
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