Review on Computational Modeling and Visualization of the Ironmaking Blast Furnace at Purdue University Northwest

Okosun, Tyamo; Silaen, Armin K.; Zhou, Chenn Q.

doi:10.1002/srin.201900046

Cited by 30 publications

(15 citation statements)

References 49 publications

(69 reference statements)

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“…It has been extensively used to study BFs over a range of conditions in recent years, as reviewed by different investigators. [11][12][13][14][15] Numerical models for BFs can be discrete-or continuum-based with respect to different treatments of the solid phase, which is represented by the discrete element model (DEM) and two-fluid (or multi-fluid) model (TFM), respectively. The DEM approach is computationally too demanding to consider a real BF where the number of particles can be billions.…”

Section: Introductionmentioning

confidence: 99%

CFD Modeling and Analysis of Particle Size Reduction and Its Effect on Blast Furnace Ironmaking

Jiao

Kuang

Liu

et al. 2020

Metall Mater Trans B

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Particle size reduction inevitably occurs inside ironmaking blast furnaces (BFs) but is not studied under BF conditions due to the lack of an effective tool. This paper simulates this phenomenon inside a 5000-m 3 commercial BF using a recently developed three-dimensional computational fluid dynamics (CFD) process model. In particular, the sinter reduction degradation and coke gasification are modeled for considering the size reduction. By incorporating this information in the BF model, the in-furnace states and global performance are evaluated with respect to sinter reduction degradation index (RDI) under different conditions, e.g., keeping a constant blast rate or gas pressure drop. The results show that with increasing RDI, the bed permeability deteriorates, and there exists a critical value of RDI beyond which the decreased bed permeability leads to a significant drop in productivity for a given gas pressure drop. However, this problem can be mitigated substantially by charging more coke particles at the furnace periphery under the conditions considered. The proposed approach offers an extended capability to model and control BF operations.

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Section: Introductionmentioning

confidence: 99%

CFD Modeling and Analysis of Particle Size Reduction and Its Effect on Blast Furnace Ironmaking

Jiao

Kuang

Liu

et al. 2020

Metall Mater Trans B

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“…The BF ironmaking is a very complex process, so nowadays novel processes involved in BF are usually investigated by numerical simulations. Numerical simulations can offer the scholars very detailed information to examine their feasibility, understand their mechanisms, and optimize their parameters [16][17][18]. A computational fluid dynamic (CFD) model based on a full-scale BF was developed by the current authors previously [19].…”

Section: Model Developmentmentioning

confidence: 99%

Numerical Investigation of Blast Furnace Operation with Scrap Charging

She

et al. 2020

Metals

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One approach to reduce CO2 emission in the steelmaking industry is to recycle scrap to the blast furnace/basic oxygen furnace (BF/BOF) production system. This paper performed a numerical investigation on the BF operation with scrap charging. The investigated BF was with an inner volume of 820 m3, producing 2950 tons of hot metal per day (tHM/d). The simulated results indicated the following: Extra scrap addition in BF causes the decrease of shaft temperature, the decrease of local gas utilization, and the lowering of cohesive zone position, leading to an unstable BF running. The partial replacement of sinter with scrap in BF can mitigate the negative effects induced by scrap charging. The optimal scrap rate in the BF is 178 kg/tHM, under which the BF reaches a productivity of 3310 tHM/d, a top-gas utilization of 48.5%, and a top-gas temperature of 445 K. Compared to the base case, in the BF operation with scrap charging, the BF productivity is increased by 360 kg/tHM, its pulverized-coal rate and coke rate are decreased by 16.3 kg/tHM and 39.8 kg/tHM, respectively.

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“…Work previously undertaken at CIVS has led to the development of validated CFD models that permit the exploration of impacts in the furnace from the tuyere through the shaft region. Details of this modeling work have previously been published [6,[18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. Previous work has indicated the potential for natural gas preheating as a potential method to reduce the coke rate of the blast furnace [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Tuyere-Level Syngas Injection in the Blast Furnace: A Computational Fluid Dynamics Investigation

et al. 2021

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With the recent push towards high injection rate blast furnace operation for economic and environmental reasons, it has become desirable in North America to better understand the impacts of alternate injected gas fuels in comparison to the well-documented limitations of natural gas. The quenching effects of gas injection on the furnace present a functional limit on the maximum stable injection rate which can be utilized. With this in mind, researchers at Purdue University Northwest’s Center for Innovation through Visualization and Simulation utilized previously developed computational fluid dynamics (CFD) models of the blast furnace to explore the impacts of replacing natural gas with syngas in a blast furnace with a single auxiliary fuel supply. Simulations predicted that the syngas injection can indeed reduce coke consumption in the blast furnace at similar injection rates to natural gas while maintaining stable raceway flame and reducing gas temperatures. The coke rates predicted by modeling using similar injection rates indicated an improvement of 8 to 15 kg/thm compared to baseline conditions when using the syngas of various feedstocks. Additionally, syngas injection scenarios typically produced higher raceway flame temperatures than comparable natural gas injection cases, indicating potential headroom for reducing oxygen enrichment in the hot blast or providing an even higher total injection rate.

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Review on Computational Modeling and Visualization of the Ironmaking Blast Furnace at Purdue University Northwest

Cited by 30 publications

References 49 publications

CFD Modeling and Analysis of Particle Size Reduction and Its Effect on Blast Furnace Ironmaking

CFD Modeling and Analysis of Particle Size Reduction and Its Effect on Blast Furnace Ironmaking

Numerical Investigation of Blast Furnace Operation with Scrap Charging

Tuyere-Level Syngas Injection in the Blast Furnace: A Computational Fluid Dynamics Investigation

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