Abstract
Three kinds of particles with different hydrophilic and hydrophobic properties were used as fluidized particles of Fluidized Bed Medium Separation (FBMS). A minimum fluidization velocity, an apparent specific gravity of fluidized bed and floating-sinking behaviors of dry and wet coals were measured in the range of relative humidity from 50% to 80%. In a hydrophilic particle, the fluidization became unstable with increasing relative humidity because particle aggregation took place at a high humidity, and hence floating-sinking behaviors depend on changes in a relative humidity. On the other hand, in a highly hydrophobic particle, the fluidization was stable and floating-sinking behaviors based on the specific gravity difference were obtained even for wet coals and at a high relative humidity. Therefore, the FBMS using a highly hydrophobic particle is applicable at a high relative humidity without a control device of relative humidity.
| Original language | English |
|---|---|
| Pages (from-to) | 108-114 |
| Number of pages | 7 |
| Journal | Advanced Powder Technology |
| Volume | 22 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2011 |
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Keywords
- Fluidized bed
- Gravity separation
- Hydrophobic particles
- Relative humidity
ASJC Scopus subject areas
- Chemical Engineering(all)
- Mechanics of Materials
Cite this
Fluidized Bed Medium Separation (FBMS) using the particles with different hydrophilic and hydrophobic properties. / Yoshida, Mikio; Oshitani, Jun; Tani, Keiichiro; Gotoh, Kuniaki.
In: Advanced Powder Technology, Vol. 22, No. 1, 01.2011, p. 108-114.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fluidized Bed Medium Separation (FBMS) using the particles with different hydrophilic and hydrophobic properties
AU - Yoshida, Mikio
AU - Oshitani, Jun
AU - Tani, Keiichiro
AU - Gotoh, Kuniaki
PY - 2011/1
Y1 - 2011/1
N2 - Three kinds of particles with different hydrophilic and hydrophobic properties were used as fluidized particles of Fluidized Bed Medium Separation (FBMS). A minimum fluidization velocity, an apparent specific gravity of fluidized bed and floating-sinking behaviors of dry and wet coals were measured in the range of relative humidity from 50% to 80%. In a hydrophilic particle, the fluidization became unstable with increasing relative humidity because particle aggregation took place at a high humidity, and hence floating-sinking behaviors depend on changes in a relative humidity. On the other hand, in a highly hydrophobic particle, the fluidization was stable and floating-sinking behaviors based on the specific gravity difference were obtained even for wet coals and at a high relative humidity. Therefore, the FBMS using a highly hydrophobic particle is applicable at a high relative humidity without a control device of relative humidity.
AB - Three kinds of particles with different hydrophilic and hydrophobic properties were used as fluidized particles of Fluidized Bed Medium Separation (FBMS). A minimum fluidization velocity, an apparent specific gravity of fluidized bed and floating-sinking behaviors of dry and wet coals were measured in the range of relative humidity from 50% to 80%. In a hydrophilic particle, the fluidization became unstable with increasing relative humidity because particle aggregation took place at a high humidity, and hence floating-sinking behaviors depend on changes in a relative humidity. On the other hand, in a highly hydrophobic particle, the fluidization was stable and floating-sinking behaviors based on the specific gravity difference were obtained even for wet coals and at a high relative humidity. Therefore, the FBMS using a highly hydrophobic particle is applicable at a high relative humidity without a control device of relative humidity.
KW - Fluidized bed
KW - Gravity separation
KW - Hydrophobic particles
KW - Relative humidity
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UR - http://www.scopus.com/inward/citedby.url?scp=79951818647&partnerID=8YFLogxK
U2 - 10.1016/j.apt.2010.10.008
DO - 10.1016/j.apt.2010.10.008
M3 - Article
AN - SCOPUS:79951818647
VL - 22
SP - 108
EP - 114
JO - Advanced Powder Technology
JF - Advanced Powder Technology
SN - 0921-8831
IS - 1
ER -