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Solid mass flux in a chemical-looping process for hydrogen production in a multistage circulating moving bed reactor

机译:用于多级循环移动床反应器中制氢的化学循环过程中的固体质量通量

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摘要

We studied the solid flow characteristics of a multistage circulating moving bed reactor manufactured to produce high purity H_2 using a chemical-looping process at high tem-perature. The reactor was constructed of stainless steel 304 and comprised an inclined fuel reactor ((bottom: 0.07 m, top: 0.16 m) x 0.06 x 1 m~3), a steam reactor (0.16 x 0.06 x 1.4 m~3), a riser (0.03 x 0.06 x 3.8 m~3), two loop-seals (0.03 x 0.06 m~2), and a cyclone. Zirconia beads (d_p = 186 m, ρ_p = 3720 kg/m~3, U_(mf) = 4.95 x 10~2 m/s, Geldart classification B Group) were used as the bed material. To distribute compressed air, a bubble cap was used as the distributor. Solid mass flux appeared at 6.2-56.4 kg/m~2s and the solid mean residence time appeared 92.5-889.3 s in the steam reactor and 75.3-717.7 s in the fuel reactor. Solid mass flux increased with increasing inlet gas velocity into the loop-seal, temperature and the bed height of the steam reactor. However, the solid mean residence time decreased with increasing inlet gas velocity into the loop-seal and the bed height of the steam reactor.
机译:我们研究了采用高温化学环化工艺生产高纯度H_2的多级循环移动床反应器的固体流动特性。该反应堆由不锈钢304制成,并包括一个倾斜的燃料反应堆((底部:0.07 m,顶部:0.16 m)x 0.06 x 1 m〜3),蒸汽反应器(0.16 x 0.06 x 1.4 m〜3),提升管(0.03 x 0.06 x 3.8 m〜3),两个环封(0.03 x 0.06 m〜2)和一个旋风分离器。氧化锆珠(d_p = 186 m,ρ_p= 3720 kg / m〜3,U_(mf)= 4.95 x 10〜2 m / s,Geldart分类B组)用作床层材料。为了分配压缩空气,使用了一个气泡帽作为分配器。蒸汽反应堆中的固体质量通量为6.2-56.4 kg / m〜2s,固体平均停留时间为92.5-889.3 s,燃料反应器中为75.3-717.7 s。固体质量通量随着进入环封的进气速度,温度和蒸汽反应器床高度的增加而增加。然而,固体平均停留时间随着进入环封的进气速度和蒸汽反应器床高度的增加而减少。

著录项

  • 来源
    《International journal of hydrogen energy》 |2013年第14期|6052-6058|共7页
  • 作者单位

    Department of Chemical Engineering, Sungkyunkwan University, Suwon, Republic of Korea;

    Hydrogen Energy Research Center, KIER, Republic of Korea;

    Hydrogen Energy Research Center, KIER, Republic of Korea;

    Department of Chemical and Biomolecular Engineering and Energy & Environment Research Center, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea;

    Department of Chemical Engineering, Sungkyunkwan University, Suwon, Republic of Korea;

    Department of Chemical Engineering, Sungkyunkwan University, Suwon, Republic of Korea;

    Department of Chemical Engineering, Sungkyunkwan University, Suwon, Republic of Korea;

    Department of Chemical Engineering, Sungkyunkwan University, Suwon, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    circulating fluidized bed; loop-seal; solid mass flux; flow pattern; high temperature;

    机译:循环流化床密封圈;固体通量;流型;高温;
  • 入库时间 2022-08-18 00:27:43

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