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  • ISSN 1006-3080
  • CN 31-1691/TQ

半间歇式沸腾床反应器中液相循环速度的测定

王伟伟 张建鹏 岳志 黄子宾 程振民

王伟伟, 张建鹏, 岳志, 黄子宾, 程振民. 半间歇式沸腾床反应器中液相循环速度的测定[J]. 华东理工大学学报(自然科学版). doi: 10.14135/j.cnki.1006-3080.20211130001
引用本文: 王伟伟, 张建鹏, 岳志, 黄子宾, 程振民. 半间歇式沸腾床反应器中液相循环速度的测定[J]. 华东理工大学学报(自然科学版). doi: 10.14135/j.cnki.1006-3080.20211130001
WANG Weiwei, ZHANG Jianpeng, YUE zhi, HUANG Zibin, CHENG Zhenmin. Liquid Circulation Velocity Measurements in a Semi-Batch Ebullated-Bed Reactor[J]. Journal of East China University of Science and Technology. doi: 10.14135/j.cnki.1006-3080.20211130001
Citation: WANG Weiwei, ZHANG Jianpeng, YUE zhi, HUANG Zibin, CHENG Zhenmin. Liquid Circulation Velocity Measurements in a Semi-Batch Ebullated-Bed Reactor[J]. Journal of East China University of Science and Technology. doi: 10.14135/j.cnki.1006-3080.20211130001

半间歇式沸腾床反应器中液相循环速度的测定

doi: 10.14135/j.cnki.1006-3080.20211130001
基金项目: 国家重点研发计划资助课题(2019YFC1906705)
详细信息
    作者简介:

    王伟伟(1998—),男,山西人,硕士生,主要研究方向为反应器工程。E-mail:1659572778@qq.com

    通讯作者:

    程振民,E-mail:zmcheng@ecust.edu.cn

  • 中图分类号: TQ021.1

Liquid Circulation Velocity Measurements in a Semi-Batch Ebullated-Bed Reactor

  • 摘要: 采用内径286 mm、高7.2 m的气-液-固三相沸腾床反应器进行了液相间歇、气相连续的操作研究,以水、空气、Al2O3球形颗粒构成三相体系,在固含率12% ~ 30%和表观气速0.086 ~ 0.216 m/s下对宏观液体循环速度进行了测定。本研究采用示踪剂法,测定反应器进出口的多组示踪剂浓度曲线,使用MATLAB软件对液相轴向扩散系数进行求解,再代入爱因斯坦扩散系数定义式中得到液体循环速度。实验结果表明,随着表观气速的增大,液体循环速度相应增大;在固含率低于30%时,随着固含率增加,液体循环速度相应增加;但随着固含率的进一步增大,液体循环速度的增量越来越小。

     

  • 图  1  沸腾床实验装置

    Figure  1.  Ebullated bed experimental device

    1–Water tank; 2–Pump; 3–Liquid flow meter; 4–Nitrogen cylinder; 5–Tracer storage tank; 6–Bubble sparger; 7–Ebullated-bed; 8–Expansion section; 9–Sampling port; 10–Conductivity detection and acquisition system; 11–Gas flow meter; 12–Air storage tank; 13–Air compressor

    图  2  不同固含率下塔顶和塔底示踪剂响应曲线图

    Figure  2.  Response curves of tracer at the top and bottom of the tower under different solid holdup

    图  3  不同固含率下液体循环速度与表观气速的关系图

    Figure  3.  Relationship between the liquid circulation velocity and the apparent gas velocity under different solid holdup

    图  4  不同表观气速下液体循环速度与固含率的关系图

    Figure  4.  Relationship between the liquid circulation velocity and solid holdup under different superficial gas velocity

    图  5  塔顶示踪剂浓度求解曲线与实验点曲线图

    Figure  5.  Solution curve and experimental point curve diagram of the tracer concentration at the top of the tower

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  • 收稿日期:  2021-11-30
  • 网络出版日期:  2022-04-12

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