Elutriation of Fine Particles from a Vortexing Fluidized Bed

この論文にアクセスする

この論文をさがす

著者

抄録

A systematic investigation of elutriation of particles is reported in the cold model of bubbling fluidized bed (BFB) and vortexing fluidized bed (VFB) of 0.19 m diameter and 4.0 m height. Glass beads were used as the fluidized material. The diameter of the coarse particles was 545 <I>μ</I>m, the diameter of the fine particles used for the elutriation test ranged from 49 to 194 <I>μ</I>m. The results indicate that the specific elutriation rate constant (<I>K</I><SUB>∞</SUB>*) is a function of the initial concentration of elutriated fine particles. The minimum value of <I>K</I><SUB>∞</SUB>* is obtained when the initial concentration of elutriated fine particles is reached 16 wt% in a BFB system. Based on the experimental data obtained from the BFB, a correlation is presented to estimate the <I>K</I><SUB>∞</SUB>*. The <I>K</I><SUB>∞</SUB>* is found to be a function of the particle terminal velocity, gas density, and modified Froude number (<I>Fr</I>*). For a wide particle size distribution (PSD) system, a new parameter, called particle size distribution factor, <I>γ</I>, is introduced to describe the specific elutriation rate constant of wide PSD elutriated fine particles. A method to estimate the specific elutriation rate constant of a multi-component system by using the specific elutriation rate constant of each component obtained from a binary particle mixture system is also presented in this study.

収録刊行物

  • Journal of chemical engineering of Japan  

    Journal of chemical engineering of Japan 31(6), pp.950-959, 1998-12-01 

    The Society of Chemical Engineers, Japan

参考文献:  28件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10002066781
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • NDL 記事登録ID
    1523660
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-R395
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ