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Title: Numerical analysis for the multi-phase flow of pulverized coal injection inside blast furnace tuyere

Abstract

The pulverized coal injection (PCI) system was modified from single lance injection into double lance injection at No. 3 Blast Furnace of CSC. It is beneficial to reduce the cost of coke. However, the injected coal was found very close to the inner wall of the tuyere during the operation, such as to cause the possibility of erosion for the tuyere. In this study a three-dimensional mathematical model has been developed based on a computational fluid dynamics software PHOENICS to simulate the fluid flow phenomena inside blast furnace tuyere. The model was capable of handling steady-state, three-dimensional multi-phase flow of pulverized coal injection. The model was applied to simulate the flow patterns of the injection coal inside the tuyere with two kinds of lance design for the PCI system. The distribution of injection coal was simulated such as to estimate the possibility of erosion for the tuyere. The calculated results agreed with the operating experience of CSC plant and the optimum design of double lance was suggested. The model was also applied to simulate the oxygen concentration distribution with these different oxygen enrichments for the coal/oxygen lance system. The calculated results agreed with the experimental measurement. These test results demonstratemore » that the model is both reasonably reliable and efficient.« less

Authors:
 [1]
  1. Diwan College of Management, Tainan (Taiwan)
Publication Date:
OSTI Identifier:
20647589
Resource Type:
Journal Article
Journal Name:
Applied Mathematical Modelling
Additional Journal Information:
Journal Volume: 29; Journal Issue: 9; Journal ID: ISSN 0307-904X
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; INJECTION; COAL; PULVERIZED FUELS; BLAST FURNACES; MATHEMATICAL MODELS; FLUID FLOW; COMPUTERIZED SIMULATION; THREE-DIMENSIONAL CALCULATIONS; DESIGN; OXYGEN; TWO-PHASE FLOW

Citation Formats

Chen, C W. Numerical analysis for the multi-phase flow of pulverized coal injection inside blast furnace tuyere. United States: N. p., 2005. Web. doi:10.1016/j.apm.2004.11.004.
Chen, C W. Numerical analysis for the multi-phase flow of pulverized coal injection inside blast furnace tuyere. United States. https://doi.org/10.1016/j.apm.2004.11.004
Chen, C W. 2005. "Numerical analysis for the multi-phase flow of pulverized coal injection inside blast furnace tuyere". United States. https://doi.org/10.1016/j.apm.2004.11.004.
@article{osti_20647589,
title = {Numerical analysis for the multi-phase flow of pulverized coal injection inside blast furnace tuyere},
author = {Chen, C W},
abstractNote = {The pulverized coal injection (PCI) system was modified from single lance injection into double lance injection at No. 3 Blast Furnace of CSC. It is beneficial to reduce the cost of coke. However, the injected coal was found very close to the inner wall of the tuyere during the operation, such as to cause the possibility of erosion for the tuyere. In this study a three-dimensional mathematical model has been developed based on a computational fluid dynamics software PHOENICS to simulate the fluid flow phenomena inside blast furnace tuyere. The model was capable of handling steady-state, three-dimensional multi-phase flow of pulverized coal injection. The model was applied to simulate the flow patterns of the injection coal inside the tuyere with two kinds of lance design for the PCI system. The distribution of injection coal was simulated such as to estimate the possibility of erosion for the tuyere. The calculated results agreed with the operating experience of CSC plant and the optimum design of double lance was suggested. The model was also applied to simulate the oxygen concentration distribution with these different oxygen enrichments for the coal/oxygen lance system. The calculated results agreed with the experimental measurement. These test results demonstrate that the model is both reasonably reliable and efficient.},
doi = {10.1016/j.apm.2004.11.004},
url = {https://www.osti.gov/biblio/20647589}, journal = {Applied Mathematical Modelling},
issn = {0307-904X},
number = 9,
volume = 29,
place = {United States},
year = {Thu Sep 01 00:00:00 EDT 2005},
month = {Thu Sep 01 00:00:00 EDT 2005}
}