Agglomerate behavior in a recirculating fluidized bed with sheds: Effect of ring baffles--颗粒学报PARTICUOLOGY

Careaga, F. J. S., Briens, C., Berruti, F., McMillan, J., & Gray, M. (2018). Agglomerate behavior in a recirculating fluidized bed with sheds: Effect of ring baffles. Particuology, 38, 143-151. https://doi.org/10.1016/j.partic.2017.10.008

Agglomerate behavior in a recirculating fluidized bed with sheds: Effect of ring baffles

Francisco J. Sanchez Careaga ^a, Cedric Briens ^a *, Franco Berruti ^a, Jennifer McMillan ^b, Murray Gray ^c

a Institute for Chemicals and Fuels from Alternative Resources, Western University, 22312 Wonderland Rd., Ilderton, ON, N0 M2AO, Canada
b Edmonton Research Centre, Syncrude Canada Ltd, 9421 17th Ave, Edmonton, AB, T6N 1H4, Canada
c The Petroleum Institute, PO Box 2533, Abu Dhabi, UAE

10.1016/j.partic.2017.10.008

Volume 38, June 2018, Pages 143-151

Received 7 October 2016, Revised 30 September 2017, Accepted 30 October 2017, Available online 9 February 2018, Version of Record 2 April 2018.

E-mail: cbriens@uwo.ca

Highlights

• Radioactive particle tracking was used to study effect of ring baffles in a fluidized bed.

• Baffles increased the residence time the agglomerates spent above the baffles.

• Baffles may reduce the fouling of the stripper section.

Abstract

The radioactive particle tracking technique was used to study the effect of internal ring baffles on wet agglomerate motion inside a cold flow recirculating fluidized bed. The study found that using such a baffle on its own or above the regular sheds helps reduce the fouling of the stripper section by increasing the residence time that the agglomerates spend above the baffle, thereby reducing the release of the vapors below the baffles that cause fouling of the sheds. Adding down-comers, or flux tubes, to the ring baffles degrades the performance of the baffles. Reducing the length of the flux tubes, so that they do not reach the bottom of the baffle lip results in a further degradation in baffle performance.

Graphical abstract

Keywords

Radioactive particle tracking; Fluidized bed; Fluid coker; Baffles

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