Effect of extended single/multi-jet nozzles in a fluidized bed reactor on growth of granular polysilicon

Hokyu Moon, Hwang Suk Kim, Jiwoon Song, Hwanseong Lee, Hyun Goo Kwon, Yoon sub Jung, Hyung Hee Cho

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The influence of extended single- and multi-jet nozzles in a fluidized bed reactor on growth of granular polysilicon was studied, experimentally and numerically. Three-dimensional (3D) unsteady computational fluid dynamics (CFD) calculations were performed using the Fluent commercial CFD package. The Eulerian-Eulerian multiphase model was applied for the bulk motion of the two-phase flow, and the kinetic theory of granular flow was used to predict the solid-phase interactions. 3D cold-model reactor experiments were performed to validate the models and conditions used for the CFD simulations. The CFD-predicted pressure drop and bed expansion agreed reasonably well with the cold-model reactor test data. For a single-jet nozzle, superimposed bubbling and spouting behavior were observed in the bed. The effects of the single-jet intensity were also examined. For multi-jet nozzles, the mixing performance was much improved in the reaction zone and the dead reaction zone was reduced compared to the single-jet nozzle. Furthermore, determining the optimal configuration of multi-jets nozzles is necessary to minimize or avoid wall deposition as well as enlarging reaction zone.

Original languageEnglish
Pages (from-to)242-252
Number of pages11
JournalChemical Engineering Journal
Volume248
DOIs
Publication statusPublished - 2014 Jul 15

Fingerprint

Polysilicon
Fluidized beds
Nozzles
computational fluid dynamics
Computational fluid dynamics
Kinetic theory
two phase flow
reactor
effect
pressure drop
Two phase flow
Pressure drop
kinetics
Computer simulation
simulation
experiment
Experiments

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Moon, Hokyu ; Kim, Hwang Suk ; Song, Jiwoon ; Lee, Hwanseong ; Kwon, Hyun Goo ; Jung, Yoon sub ; Cho, Hyung Hee. / Effect of extended single/multi-jet nozzles in a fluidized bed reactor on growth of granular polysilicon. In: Chemical Engineering Journal. 2014 ; Vol. 248. pp. 242-252.
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Effect of extended single/multi-jet nozzles in a fluidized bed reactor on growth of granular polysilicon. / Moon, Hokyu; Kim, Hwang Suk; Song, Jiwoon; Lee, Hwanseong; Kwon, Hyun Goo; Jung, Yoon sub; Cho, Hyung Hee.

In: Chemical Engineering Journal, Vol. 248, 15.07.2014, p. 242-252.

Research output: Contribution to journalArticle

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AU - Kim, Hwang Suk

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AU - Jung, Yoon sub

AU - Cho, Hyung Hee

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