Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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A Study on the Flow Characteristics of Bubbles in a Fluidized Bed

유동층에서 기포의 유동특성에 관한 연구

  • Published : 1996.08.01
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Abstract

A fluidized bed combustion chamber is widely used to incinerate waste material. The most important factor designing the incinerator is the flow characteristics in a fluidized bed, because combustion efficiency is influenced by the flow characteristics. This paper has invesitigated the flow characteristics of bubbles in fluidized bed by means of meassuring a pressure fluctuation in the fluidized bed. A pressure probe system has used to measure the pressure. The data concerned with bubble rising velocity, bubble size, distribution of bubbles and frequency of bubble generation or decay are obtained to find the flow characteristics of bubbles in the fluidized bed. The result obtained from this experimental study can be used to design the fuel feeding system of fluidized bed combustion type incinerator. And it is possible to predict the mixing of waste material and fluidizing material.

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References

  1. Power Tech. no.4 The size frequency of bubbles in two-and three-dimensional gasfluidized beds Geldart,D.
  2. Trans. Instn. Chem. Engrs. no.50 Fluidized bed bubbles viewed by X rays, Part Ⅰ- Experimental details and the interaction of bubbles with solid surface Row,P.N.;Everett,D.J.
  3. Chem. Enging. Sci. no.24 The behaviour offreelybubblingfluidization beds Grace,J.R.;Harrison,D.
  4. Cheniechemie- Ing. techn. no.43 Auto Korrelation und Kreuzkorrelation zur Messung lokaler Blasengrosser und auf Stiegsgeschwinchwindigkeiten in den Gas/Feststoff Fliessbeten Werther,J.;molerus,O.
  5. Differentinal Pressure measurements - Their application to measurement of fluidiz bed combustion parameters Dent,D.;Lanauze,R.D.;Joyce,T.;Fulford,V.;Peeler,P.
  6. Ramdom Data Bendart,J.S.;Piersol,A.G.
  7. Probabilistic Methods of Signals and system Analysis Cooper,G.R.;Mcgillem,C.D.
  8. Chem. Eng. Comum. v.135 Evalution for Mimum Fluidizing Velocity in Gas Fluidized Bedfrom Pressure Fluctuations Puncochar,M.;Drahos,J.;Cermak,J.;Selucky,K.
  9. J.AICHE v.30 The Experiment of Bubbling Fluidized Bed Svoboda,K.;Cermak,J.;Hartman,M.;Drahos,J.
  10. Chal. Univ. Techn. Measurements of Bubble Behaviour in a Pressureized Fluidized Bed Buring coal, Using capacitance probe Almstedt,A.E.;Olsson,E.
  11. Int. J. Multiphase Flow. v.1 The local structure of gas fluidized beds-Ⅰ. A statisistically based Measuring system Werther,J.;Molerus,O.
  12. Fluidized bed instrumention using pressure probes Clark,N.;Wang,Y.Z.;Mckenzie,E.Z.;Turton,R.
  13. Fluidized Particles Davidson,J.F.;Harrison,D.