Abstract
Transient behavior of the bed collapse after shut-off the gas supply into a three-phase fluidized bed was determined. Experiments were carried out in a 210-mm diameter half-tube acrylic column having a 1.8 m-high test section. The polymer beads (dp=3.2 mm, ρs=1,280kg/m3) were fluidized by cocurrent flow of deionized water and air. The transient behavior of the bed collapse after cut-off the gas supply to the bed was monitored by a video camera (30 frames/s). The dense bed surface height was measured from the image of videotape. At lower liquid velocity, the dense bed surface increases with the elapsed time and then reaches a bed height, whereas at higher liquid velocity the dense bed surface increases sharply with the elapsed time, then decreases and reaches the bed height corresponding to the liquid-solid fluidized beds (water-polymer beads).
| Original language | English |
|---|---|
| Pages (from-to) | 1166-1169 |
| Number of pages | 4 |
| Journal | Korean Journal of Chemical Engineering |
| Volume | 20 |
| Issue number | 6 |
| Publication status | Published - 2003 Nov 1 |
| Externally published | Yes |
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Keywords
- Bed Collapse
- Dense Bed Height
- Dynamic Characteristics
- Three-Phase Fluidized Beds
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
Cite this
Dynamic Characteristics of Bed Collapse in Three-phase Fluidized Beds. / Lee, Dong Hyun; Park, Sung Soo; Choi, Won Woong; Kim, Duk Joon; Kim, Ji Heung; Lee, Young Kwan; Sim, Sang Jun; Kim, Sang Done.
In: Korean Journal of Chemical Engineering, Vol. 20, No. 6, 01.11.2003, p. 1166-1169.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dynamic Characteristics of Bed Collapse in Three-phase Fluidized Beds
AU - Lee, Dong Hyun
AU - Park, Sung Soo
AU - Choi, Won Woong
AU - Kim, Duk Joon
AU - Kim, Ji Heung
AU - Lee, Young Kwan
AU - Sim, Sang Jun
AU - Kim, Sang Done
PY - 2003/11/1
Y1 - 2003/11/1
N2 - Transient behavior of the bed collapse after shut-off the gas supply into a three-phase fluidized bed was determined. Experiments were carried out in a 210-mm diameter half-tube acrylic column having a 1.8 m-high test section. The polymer beads (dp=3.2 mm, ρs=1,280kg/m3) were fluidized by cocurrent flow of deionized water and air. The transient behavior of the bed collapse after cut-off the gas supply to the bed was monitored by a video camera (30 frames/s). The dense bed surface height was measured from the image of videotape. At lower liquid velocity, the dense bed surface increases with the elapsed time and then reaches a bed height, whereas at higher liquid velocity the dense bed surface increases sharply with the elapsed time, then decreases and reaches the bed height corresponding to the liquid-solid fluidized beds (water-polymer beads).
AB - Transient behavior of the bed collapse after shut-off the gas supply into a three-phase fluidized bed was determined. Experiments were carried out in a 210-mm diameter half-tube acrylic column having a 1.8 m-high test section. The polymer beads (dp=3.2 mm, ρs=1,280kg/m3) were fluidized by cocurrent flow of deionized water and air. The transient behavior of the bed collapse after cut-off the gas supply to the bed was monitored by a video camera (30 frames/s). The dense bed surface height was measured from the image of videotape. At lower liquid velocity, the dense bed surface increases with the elapsed time and then reaches a bed height, whereas at higher liquid velocity the dense bed surface increases sharply with the elapsed time, then decreases and reaches the bed height corresponding to the liquid-solid fluidized beds (water-polymer beads).
KW - Bed Collapse
KW - Dense Bed Height
KW - Dynamic Characteristics
KW - Three-Phase Fluidized Beds
UR - http://www.scopus.com/inward/record.url?scp=0442295430&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0442295430&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0442295430
VL - 20
SP - 1166
EP - 1169
JO - Korean Journal of Chemical Engineering
JF - Korean Journal of Chemical Engineering
SN - 0256-1115
IS - 6
ER -