KAGAKU KOGAKU RONBUNSHU
Online ISSN : 1349-9203
Print ISSN : 0386-216X
ISSN-L : 0386-216X
Special Issue [Recent Reserch and Development in Fluidized Catalytic Reaction Processes]
Upward Transport of Solid Particles from a Fluidized Bed with a Cone-Type Freeboard
Yoneichi IKEDAMasaharu TASHIROYuuichirou FUJIYAMA
Author information
JOURNAL RESTRICTED ACCESS

2004 Volume 30 Issue 3 Pages 267-271

Details
Abstract

A downflow-type reactor, or downer, is expected to provide high gas-solid contact efficiency and reaction selectivity. In a catalyst-circulating process, for example, an HS-FCC process, steady upward transportation of catalyst particles using a riser to the top a downer is very important, together with efficient catalyst regeneration. Particle-transport characteristics from a freeboard to the riser were investigated using a fluidized bed with a cone-type freeboard for a variety of experimental conditions of gas flow rate, bed depth, and bed structure. The applicability of this concept to HS-FCC processes is also discussed.

Content from these authors
© 2004 by THE SOCIETY OF CHEMICAL ENGINEERS, JAPAN
Previous article Next article
feedback
Top