Kinetic Modeling of the Premixed Combustion of Blast Furnace Gas and Effects of Variable Compositions

Padwal, Manisha B.

doi:10.1021/acs.iecr.2c01052

Cited by 3 publications

(1 citation statement)

References 33 publications

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“…Blast furnace gas is an important secondary energy source produced during the iron-making process of blast furnaces, − and its main components include carbon dioxide (CO 2 ), carbon monoxide (CO), carbonyl sulfide (COS), sulfur dioxide (SO 2 ), hydrogen (H 2 ), and methane (CH 4 ). With increasingly severe environmental crisis, the emission of sulfur and other polluting gases has also been restricted.…”

Section: Introductionmentioning

confidence: 99%

Machine Learning-Assisted Exploration of a Two-Dimensional Nanoslit for Blast Furnace Gas Separation

Huan,

Qiu,

Sun

et al. 2023

Ind. Eng. Chem. Res.

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Diffusion-induced gas separation is crucial for industrial applications, while the determination of specific conditions is still challenging. Here, molecular dynamics simulation data were used to train machine learning models to identify the effective separation conditions for blast furnace gas confined in nanosilts with different absorption strengths (graphene and graphene oxide). The diffusion coefficients and exponents of the blast furnace gas were obtained as a database by molecular dynamics (MD) simulations. Several environmental and structural controlling factors (such as temperature, layer distance, atomic number, ionization potential, etc.) were extracted through importance analysis. And the relationships between these factors and diffusion properties were further established by the Kernel Ridge Regression algorithm. Based on the differences in diffusion coefficients, specific binary gas mixtures in the blast furnace gas with competitively high separation potential have been screened out by a trained machine learning model and verified by MD simulations. The simulation strategy can provide theoretical guidance for the structural design of membranes for diffusion-controlled gas separation.

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Section: Introductionmentioning

confidence: 99%

Machine Learning-Assisted Exploration of a Two-Dimensional Nanoslit for Blast Furnace Gas Separation

Huan,

Qiu,

Sun

et al. 2023

Ind. Eng. Chem. Res.

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Effects of elevated oxygen content and temperature on the laminar burning velocity of the blast furnace gas in oxygen-enriched air condition

Hu,

Chen,

Lin

et al. 2025

Fuel

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Interfacial reaction behavior in blast furnace and analysis of influence mechanism

Deng,

Yao,

Liu

et al. 2024

Metall. Res. Technol.

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This study aims to explore the influence mechanism of interfacial reaction in BF. The interfacial reaction behavior was analyzed, the thermodynamic and evolution processes of interfacial reaction were studied, and the influence of interfacial reaction on BF was discussed. The results show that: The desulfurization reaction mechanism can be considered as the electron transfer at slag-iron interface. The viscosity of molten iron shows a decreasing trend with the increase of sulfur content, and the surface tension of molten iron will rapidly decrease with sulfur content, so the interfacial reaction rate will be accelerated. The reduction of FeO occurs at slag-carbon interface, the content of FeO in slag often shows a decreasing trend along the height direction of BF, the erosion rate of carbon brick will increase under the condition of slag with high FeO content. The reduction of SiO2 is achieved with the help of two gas-phase compounds SiO and SiS. The average Si content in molten iron decreases with the increase of BF volume, which indicates that the large BF is more conducive to achieving low-carbon smelting. The reduction of TiO2 is carried out at the slag-carbon interface step by step, the valence state of Ti element gradually decreases. The iron-carbon interface in hearth has a significant effect on the erosion of carbon brick and the state of hearth. The wetting and erosion process at iron-carbon interface is clarified based on the cycle model, the carbon brick is eroded in this cycle. The time for the carburization of molten iron is limited, so the carbon content of molten iron cannot reach saturation, although there are a large number of iron-carbon interfaces in hearth. The change trend of maximum temperature on sidewall is opposite to the actual carbon content, the change in carburization behavior at iron-carbon interface is the essential reason for the fluctuation of erosion rate of carbon brick.

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Kinetic Modeling of the Premixed Combustion of Blast Furnace Gas and Effects of Variable Compositions

Cited by 3 publications

References 33 publications

Machine Learning-Assisted Exploration of a Two-Dimensional Nanoslit for Blast Furnace Gas Separation

Machine Learning-Assisted Exploration of a Two-Dimensional Nanoslit for Blast Furnace Gas Separation

Effects of elevated oxygen content and temperature on the laminar burning velocity of the blast furnace gas in oxygen-enriched air condition

Interfacial reaction behavior in blast furnace and analysis of influence mechanism

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