Hydrodynamics and stability of slot-rectangular spouted beds. Part I: Thin bed

Dogan Ö. M., Freitas L., Lim C., Grace J., Luo B.

CHEMICAL ENGINEERING COMMUNICATIONS, cilt.181, ss.225-242, 2000 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 181
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1080/00986440008912822
  • Dergi Adı: CHEMICAL ENGINEERING COMMUNICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.225-242
  • Anahtar Kelimeler: spouted beds, slot-rectangular, slot width, hydrodynamics, flow regimes, HEIGHT
  • Gazi Üniversitesi Adresli: Evet

Özet

Spouted beds of rectangular cross-section with gas entry through bottom slots have been proposed as a means of overcoming scale-up difficulties of conventional spouted beds. A study was undertaken of bed hydrodynamics in a thin slot-rectangular column of width 150 mm and slot width 2 to 20 mm for four types of particles. Flow regimes and bed hydrodynamics are qualitatively similar to those in cylindrical spouted beds, but there are significant quantitative differences caused by the different geometry. Slot width exerts a strong influence on such features as flow regimes, maximum spoutable bed height, minimum spouting velocity, pressure drop and fountain height.