Numerical investigation of the transient multiphase flow in an ironmaking blast furnace

Zongyan Zhou, Haiping Zhu, Aibing Yu, Paul Zulli

Research output: Contribution to journalArticleResearchpeer-review

48 Citations (Scopus)

Abstract

Discrete particle simulation (DPS) has been applied to multiphase flow modelling in an ironmaking blast furnace (BF), including burden distribution at the top, gas-solid flow in the BF shaft and raceway, and liquid-solid flow in the hearth. In this work, the approach is further extended to take into account the transient features of gas and particle flow coupled with liquid tapping operation. In the simulation, two types of particles of coke and ore with different physical properties are considered, together with different shapes of the cohesive zone and the shrinkage of size of ore particles in the cohesive zone to present ore reduction. The simulated results show that the flow of both solid and gas phases varies spatially and temporally, particularly in the cohesive zone. Gas flow is strongly affected by the layered structure of ore and coke particles in the cohesive zone. A coke-free zone can form in the hearth, and the boundary profile between the coke-free zone and the coke bed depends on the amount of liquid accumulated in the hearth, gas and solid flow rates in the raceway, and coke consumption in different regions at the interface of liquid and the coke bed. The results show that the complicated transient multiphase-flow in a BF can be captured by the present approach which may be extended to account for heat transfer and chemical reaction in the future.
Original languageEnglish
Pages (from-to)515 - 523
Number of pages9
JournalISIJ International
Volume50
Issue number4
DOIs
Publication statusPublished - 2010
Externally publishedYes

Cite this

@article{d4a12c145ec442fdb28886d15b85ea91,
title = "Numerical investigation of the transient multiphase flow in an ironmaking blast furnace",
abstract = "Discrete particle simulation (DPS) has been applied to multiphase flow modelling in an ironmaking blast furnace (BF), including burden distribution at the top, gas-solid flow in the BF shaft and raceway, and liquid-solid flow in the hearth. In this work, the approach is further extended to take into account the transient features of gas and particle flow coupled with liquid tapping operation. In the simulation, two types of particles of coke and ore with different physical properties are considered, together with different shapes of the cohesive zone and the shrinkage of size of ore particles in the cohesive zone to present ore reduction. The simulated results show that the flow of both solid and gas phases varies spatially and temporally, particularly in the cohesive zone. Gas flow is strongly affected by the layered structure of ore and coke particles in the cohesive zone. A coke-free zone can form in the hearth, and the boundary profile between the coke-free zone and the coke bed depends on the amount of liquid accumulated in the hearth, gas and solid flow rates in the raceway, and coke consumption in different regions at the interface of liquid and the coke bed. The results show that the complicated transient multiphase-flow in a BF can be captured by the present approach which may be extended to account for heat transfer and chemical reaction in the future.",
author = "Zongyan Zhou and Haiping Zhu and Aibing Yu and Paul Zulli",
year = "2010",
doi = "10.2355/isijinternational.50.515",
language = "English",
volume = "50",
pages = "515 -- 523",
journal = "ISIJ International",
issn = "0915-1559",
number = "4",

}

Numerical investigation of the transient multiphase flow in an ironmaking blast furnace. / Zhou, Zongyan; Zhu, Haiping; Yu, Aibing; Zulli, Paul.

In: ISIJ International, Vol. 50, No. 4, 2010, p. 515 - 523.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Numerical investigation of the transient multiphase flow in an ironmaking blast furnace

AU - Zhou, Zongyan

AU - Zhu, Haiping

AU - Yu, Aibing

AU - Zulli, Paul

PY - 2010

Y1 - 2010

N2 - Discrete particle simulation (DPS) has been applied to multiphase flow modelling in an ironmaking blast furnace (BF), including burden distribution at the top, gas-solid flow in the BF shaft and raceway, and liquid-solid flow in the hearth. In this work, the approach is further extended to take into account the transient features of gas and particle flow coupled with liquid tapping operation. In the simulation, two types of particles of coke and ore with different physical properties are considered, together with different shapes of the cohesive zone and the shrinkage of size of ore particles in the cohesive zone to present ore reduction. The simulated results show that the flow of both solid and gas phases varies spatially and temporally, particularly in the cohesive zone. Gas flow is strongly affected by the layered structure of ore and coke particles in the cohesive zone. A coke-free zone can form in the hearth, and the boundary profile between the coke-free zone and the coke bed depends on the amount of liquid accumulated in the hearth, gas and solid flow rates in the raceway, and coke consumption in different regions at the interface of liquid and the coke bed. The results show that the complicated transient multiphase-flow in a BF can be captured by the present approach which may be extended to account for heat transfer and chemical reaction in the future.

AB - Discrete particle simulation (DPS) has been applied to multiphase flow modelling in an ironmaking blast furnace (BF), including burden distribution at the top, gas-solid flow in the BF shaft and raceway, and liquid-solid flow in the hearth. In this work, the approach is further extended to take into account the transient features of gas and particle flow coupled with liquid tapping operation. In the simulation, two types of particles of coke and ore with different physical properties are considered, together with different shapes of the cohesive zone and the shrinkage of size of ore particles in the cohesive zone to present ore reduction. The simulated results show that the flow of both solid and gas phases varies spatially and temporally, particularly in the cohesive zone. Gas flow is strongly affected by the layered structure of ore and coke particles in the cohesive zone. A coke-free zone can form in the hearth, and the boundary profile between the coke-free zone and the coke bed depends on the amount of liquid accumulated in the hearth, gas and solid flow rates in the raceway, and coke consumption in different regions at the interface of liquid and the coke bed. The results show that the complicated transient multiphase-flow in a BF can be captured by the present approach which may be extended to account for heat transfer and chemical reaction in the future.

UR - https://www.jstage.jst.go.jp/article/isijinternational/50/4/50_4_515/_pdf

U2 - 10.2355/isijinternational.50.515

DO - 10.2355/isijinternational.50.515

M3 - Article

VL - 50

SP - 515

EP - 523

JO - ISIJ International

JF - ISIJ International

SN - 0915-1559

IS - 4

ER -