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, vol.181, pp.225-242, 2000 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 181
  • Publication Date: 2000
  • Doi Number: 10.1080/00986440008912822
  • Journal Name: CHEMICAL ENGINEERING COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.225-242
  • Keywords: spouted beds, slot-rectangular, slot width, hydrodynamics, flow regimes, HEIGHT
  • Gazi University Affiliated: Yes

Abstract

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.