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

doi:10.1016/j.jtice.2016.12.018

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

Dept. of Mechanical & Automotive Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

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 language	English
Pages (from-to)	235-243
Number of pages	9
Journal	Journal of the Taiwan Institute of Chemical Engineers
Volume	71
DOIs	https://doi.org/10.1016/j.jtice.2016.12.018
State	Published - 1 Feb 2017

Keywords

Circulating fluidized bed
Gas nozzle
Jet direction
Numerical simulation
Solid residence time distribution

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10.1016/j.jtice.2016.12.018

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

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.",

keywords = "Circulating fluidized bed, Gas nozzle, Jet direction, Numerical simulation, Solid residence time distribution",

author = "Hoanju Yoo and Hokyu Moon and Seungyeong Choi and Park, \{Yong Ki\} and Cho, \{Hyung Hee\}",

note = "Publisher Copyright: {\textcopyright} 2016 Taiwan Institute of Chemical Engineers",

year = "2017",

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day = "1",

doi = "10.1016/j.jtice.2016.12.018",

language = "English",

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TY - JOUR

T1 - Effect of the jet direction of gas nozzle on the residence time distribution of solids in circulating fluidized bed risers

AU - Yoo, Hoanju

AU - Moon, Hokyu

AU - Choi, Seungyeong

AU - Park, Yong Ki

AU - Cho, Hyung Hee

PY - 2017/2/1

Y1 - 2017/2/1

N2 - 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.

AB - 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.

KW - Circulating fluidized bed

KW - Gas nozzle

KW - Jet direction

KW - Numerical simulation

KW - Solid residence time distribution

UR - https://www.scopus.com/pages/publications/85009438162

U2 - 10.1016/j.jtice.2016.12.018

DO - 10.1016/j.jtice.2016.12.018

M3 - Article

AN - SCOPUS:85009438162

SN - 1876-1070

VL - 71

SP - 235

EP - 243

JO - Journal of the Taiwan Institute of Chemical Engineers

JF - Journal of the Taiwan Institute of Chemical Engineers

ER -

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

Abstract

Keywords

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