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Studies on development of a multi-scale and multi-physice-coupled iron-making blast furnace model and its inner thermo-chemical behaviors 9787502488529 Dianyu E，Jiaxin Cui [著] 冶金工业出版社
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北京通州
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作者Dianyu E，Jiaxin Cui [著]
出版社冶金工业出版社
ISBN9787502488529
出版时间2021-10
装帧平装
开本16开
定价78元
货号11365410
上书时间2024-04-21
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目录
1 Introduction
1.1 Blast furnace ironmaking process
1.2 Raceway zone
1.2.1 Blast furnace raceway
1.2.2 Effect of lateral gas inlet and its stability on raceway
1.3 Thermo-chemical behaviors of iron ore particles in BF
1.3.1 Softening and melting down behaviors
1.3.2 Particle scale reduction behaviors
1.4 Mathematical modelling and numerical approaches for gas-solid flow
1.4.1 TFM and CFD-DEM
1.4.2 CFD-DEM model
1.4.3 Heat transfer models based on CFD-DEM
1.4.4 Gas-solid reaction models
1.5 Mixed layer
1.5.1 Structure and nature of mixed layer
1.5.2 Effect of layer structure
1.5.3 Effect of particle size ratio
1.6 Summary and objectives
2 Discrete particle modelling of lateral jets into a packed bed and micromechanical analysis of the stability of raceways
2.1 Introduction
2.2 Model description
2.3 Simulation conditions
2.4 Results and discussion
2.4.1 Formation of different flow zones and characteristics of different flow states
2.4.2 Effect of bed geometry
2.4.3 Solid velocity at the interface of the funnel and the quasi-static flow zones
2.4.4 Phase diagram based on particle and gas velocities
2.4.5 Effect of discharging settings
2.5 Conclusions
3 Validation of CFD-DEM model for iron ore reduction at particlelevel and parametric study
3.1 Introduction
3.2 Model description
3.3 Simulation conditions
3.4 Results and discussion
3.4.1 Model validation
3.4.2 Effect of gas film resistance (GFR)
3.4.3 Effect of operation parameters
3.5 Conclusions
4 DEM-based virtual experimental blast furnace: A quasi-steady state model
4.1 Introduction
4.2 Model description
4.2.1 Assumptions and treatments in the present model
4.2.2 Numerical solution procedure
4.3 Simulation conditions
4.4 Results and discussion
4.4.1 Different flow zones
4.4.2 Gas and solid temperatures
4.4.3 Characteristics of the CZ and gas utilization
4.4.4 The effect of iron ore properties
4.5 Conclusions
5 A process scaling approach for CFD-DEM modelling of thermochemical behaviors in moving bed reactor
5.1 Introduction
5.2 Model description
5.2.1 Governing equations for discrete solid particles
5.2.2 Governing equations for gas phase
5.2.3 Process scaling and time scales
5.2.4 Derivation of dimensionless governing equations and dimensionless numbers
5.2.5 Scaling correlations, treatments and assumptions
5.3 Simulation conditions
5.4 Results and discussion
5.4.1 Gas-solid flow
5.4.2 Heart transfer
5.4.3 Chemical reactions
5.4.4 Discussion
5.5 Conclusions
6 A transient discrete element method-based virtual experimental blast furnace model
6.1 Introduction
6.2 Model description
6.2.1 Scaling correlations and assumptions
6.2.2 Numerical solution strategy
6.3 Simulation conditions
6.4 Results and discussion
6.4.1 Evolution of the process from an initial state to a steady one
6.4.2 Comparison of the predictions with those of experiments and a CFD BF model
6.4.3 Transient information of iron ore and coke particles
6.4.4 Comparison of process performance indicators
6.5 Conclusions
7 Numerical investigation of mixed layer effect on permeability in a dynamic blast furnace
7.1 Introduction
7.2 Model description
7.3 Simulation conditions
7.4 Results and discussion
7.4.1 General characteristics of mixed layer
7.4.2 The effect of mixed layer on porosity distribution
7.4.3 The effect of mixed layer on pressure drop
7.5 Conclusions
8 Conclusions and further studies
8.1 Conclusions
8.2 Future work
References
精彩内容
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