| 导流筒分布器位置对环隙气升式气固环流反应器流体力学性能的影响 |
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| 引用本文： | 刘梦溪,牛占川,卢春喜,王祝安.导流筒分布器位置对环隙气升式气固环流反应器流体力学性能的影响[J].化工学报,2010,61(9):2250-2256. |
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| 作者姓名： | 刘梦溪 牛占川 卢春喜 王祝安 |
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| 作者单位： | 中国石油大学(北京)重质油国家重点实验室;中国石油寰球工程公司 |
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| 基金项目： | 国家自然科学基金项目，中国石油天然气集团公司石油科技中青年创新基金资助项目，重油开放基金 |
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| 摘 要： | 环流反应器的研究绝大多数都局限于气液、气液固系统，涉及气固环流反应器的研究较为稀少，且大多针对气升式气固环流反应器和喷动床。本文研究了一种处理A类粒子的环隙气升式气固环流反应器，考察了操作条件和导流筒分布器位置对床层密度分布、环流速度和质量流率的影响。发现将分布器位置下移后可以有效地改善区域的流化质量、减小滑移区，床层密度沿径向的分布得到了明显改善，颗粒环流质量流率有了明显提高;进气位置以上r/R<0.367的床层得到了良好的流化，但是0.367
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| 关 键 词： | 环流反应器 气固流态化 密度分布 颗粒环流速度 质量流率 |
Effect of draft tube gas distributor on hydrodynamics in an annulus-lifted gas-solid air loop reactor |
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| LIU Mengxi,NIU Zhanchuan,LU Chunxi,WANG Zhu'an.Effect of draft tube gas distributor on hydrodynamics in an annulus-lifted gas-solid air loop reactor[J].Journal of Chemical Industry and Engineering(China),2010,61(9):2250-2256. |
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| Authors: | LIU Mengxi NIU Zhanchuan LU Chunxi WANG Zhu'an |
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| Abstract: | Extensive research on air loop reactors (ALR) has been conducted, but mostly limited to gas-liquid and gas-liquid-solid systems.Work associated with gas-solid systems has been rare and mainly focused on draft tube-lifted fluidized bed and spouted bed.The present paper addressed a gas-solid air-loop reactor treating fine Geldart A particles and operating in a new annulus-lifted mode, with bubbling or turbulent bed upward flow in the annulus in parallel with bubbling bed downward flow in the draft tube.The influence of operating conditions and axial position of draft tube gas distributor on the distribution of bed density, particle circulation velocity and circulation mass flowrate is discussed.By mounting draft tube gas distributor in the bottom region, bed density radial distribution and particle circulation mass flowrate is significantly improved.Bed density in 0.367
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