Dynamic Characteristics of Bed Collapse in Three-phase Fluidized Beds

Dong Hyun Lee; Sung Soo Park; Won Woong Choi; Duk Joon Kim; Ji Heung Kim; Young Kwan Lee; Sang Jun Sim; Sang Done Kim

doi:10.1007/BF02706956

Dynamic Characteristics of Bed Collapse in Three-phase Fluidized Beds

Dong Hyun Lee, Sung Soo Park, Won Woong Choi, Duk Joon Kim, Ji Heung Kim, Young Kwan Lee, Sang Jun Sim, Sang Done Kim

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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 (d_p=3.2 mm, ρ_s=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
DOIs	https://doi.org/10.1007/BF02706956
Publication status	Published - 2003 Nov
Externally published	Yes

Bibliographical note

Funding Information:
This research work was supported by the faculty research fund from the SungKyunKwan University, 2002. The authors from the SungKyunKwan University wish to thank the Ministry of Education for partially financial support (BK-21 Project).

Keywords

Bed Collapse
Dense Bed Height
Dynamic Characteristics
Three-Phase Fluidized Beds

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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10.1007/BF02706956

Cite this

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title = "Dynamic Characteristics of Bed Collapse in Three-phase Fluidized Beds",

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).",

keywords = "Bed Collapse, Dense Bed Height, Dynamic Characteristics, Three-Phase Fluidized Beds",

author = "Lee, {Dong Hyun} and Park, {Sung Soo} and Choi, {Won Woong} and Kim, {Duk Joon} and Kim, {Ji Heung} and Lee, {Young Kwan} and Sim, {Sang Jun} and Kim, {Sang Done}",

note = "Funding Information: This research work was supported by the faculty research fund from the SungKyunKwan University, 2002. The authors from the SungKyunKwan University wish to thank the Ministry of Education for partially financial support (BK-21 Project).",

year = "2003",

month = nov,

doi = "10.1007/BF02706956",

language = "English",

volume = "20",

pages = "1166--1169",

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AU - Lee, Dong Hyun

AU - Park, Sung Soo

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AU - Kim, Duk Joon

AU - Kim, Ji Heung

AU - Lee, Young Kwan

AU - Sim, Sang Jun

AU - Kim, Sang Done

N1 - Funding Information: This research work was supported by the faculty research fund from the SungKyunKwan University, 2002. The authors from the SungKyunKwan University wish to thank the Ministry of Education for partially financial support (BK-21 Project).

PY - 2003/11

Y1 - 2003/11

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

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DO - 10.1007/BF02706956

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JO - Korean Journal of Chemical Engineering

JF - Korean Journal of Chemical Engineering

IS - 6

ER -

Dynamic Characteristics of Bed Collapse in Three-phase Fluidized Beds

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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