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Pressure Fluctuation Model of Fluidized Bed

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 39 Issue 1 Page 119-125
published_at 1988
KJ00000156712.pdf
[fulltext] 445 KB
Title
流動層の圧力変動モデル
Pressure Fluctuation Model of Fluidized Bed
Creators Morimoto Eiji
Creators Kohra Yoshimitsu
Creators Hayano Nobuo
Source Identifiers
Dynamic model was proposed for pressure fluctuations for a gas-solid fluidized bed. Transfer function for plenum pressure variation was obtained from the equations which described mass balance around the plenum, pressure drop through the distributor, and pressure at the bottom of the bed. Validity of the model was studied in spectrum domain comparing experimental results acquired from three-dimensional apparatus processing sand whose mean diameter was 360 microns. Spectrum analyses showed dominant values which decreased as superficial gas velocity increased at frequencies of 8 Hz and 17 Hz. Peak value at the lower frequency was related to the oscillation of the bed, and another peak at the higher frequency was due to the inlet gas flow. The model was highly consistent with experimental results both in free bubbling fluidization regime and in more intensive fluidized regime with higher gas velocity. An ARMA model for the bed including blower system was presented taking into account the blower dynamics estimated from the step response results.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1988
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部