Effect of the jet direction of gas nozzle on the residence time distribution of solids in circulating fluidized bed risers

Hoanju Yoo, Hokyu Moon, Seungyeong Choi, Yong Ki Park, Hyung Hee Cho

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The authors investigate the effects of the direction of the gas jet on the solid residence time distribution in a CFB riser. Tracer technique was employed to calculate the RTD of solids. A Eulerian–Eulerian model with kinetic theory of granular flow and species transport was used to simulate the motion of tracer particles in a CFB riser. For a comparative analysis of the direction of the gas jet, simulations of vertical, horizontal and hybrid jets were carried out. The direction of the gas jet significantly influenced the axial and radial structure of bed, and hence affected the RTD for solid particles. The mean residence time of solids was changed, and the results showed that 16.3 s, 14.8 s, and 11.4 s with vertical, horizontal and hybrid jets nozzles, respectively.

Original languageEnglish
Pages (from-to)235-243
Number of pages9
JournalJournal of the Taiwan Institute of Chemical Engineers
Volume71
DOIs
Publication statusPublished - 2017 Feb 1

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Residence time distribution
Fluidized beds
Nozzles
Gases
Kinetic theory
Direction compound

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

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abstract = "The authors investigate the effects of the direction of the gas jet on the solid residence time distribution in a CFB riser. Tracer technique was employed to calculate the RTD of solids. A Eulerian–Eulerian model with kinetic theory of granular flow and species transport was used to simulate the motion of tracer particles in a CFB riser. For a comparative analysis of the direction of the gas jet, simulations of vertical, horizontal and hybrid jets were carried out. The direction of the gas jet significantly influenced the axial and radial structure of bed, and hence affected the RTD for solid particles. The mean residence time of solids was changed, and the results showed that 16.3 s, 14.8 s, and 11.4 s with vertical, horizontal and hybrid jets nozzles, respectively.",
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Effect of the jet direction of gas nozzle on the residence time distribution of solids in circulating fluidized bed risers. / Yoo, Hoanju; Moon, Hokyu; Choi, Seungyeong; Park, Yong Ki; Cho, Hyung Hee.

In: Journal of the Taiwan Institute of Chemical Engineers, Vol. 71, 01.02.2017, p. 235-243.

Research output: Contribution to journalArticle

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AU - Yoo, Hoanju

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AU - Cho, Hyung Hee

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