Computational fluid dynamics analysis of biochar combustion in a simulated ironmaking electric arc furnace

Cardarelli, Alessandro; Santis, Michele De; Cirilli, Filippo; Barbanera, Marco

doi:10.1016/j.fuel.2022.125267

Cited by 21 publications

(14 citation statements)

References 40 publications

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“…The latent heat and sensible heat make up the physical heat of MS. The physical heat of MS is calculated according to mass and temperature of MS, which is shown as equation (12).…”

Section: Calculation Methodsmentioning

confidence: 99%

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Mathematical modelling and techno-economic analysis of electric arc furnace steelmaking process with hot metal charging in China

Hu,

Yang,

Zou

et al. 2024

Ironmaking & Steelmaking: Processes, Products and Applicati

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Comprehensively considering the raw materials availability, production technology, and economy factor, it is unclear to choose the optimal electric arc furnace (EAF) steelmaking modes with charging scrap and hot metal (HM) in China. In this paper, the mathematical modelling and techno-economic analysis is adopted to quantitatively describe the consumption level of material and energy, as well as the economic performance in EAF steelmaking process. The calculation results reveal that considering the lowest smelting time, heat loss and total energy consumption, and better economic benefit and energy saving effect, the optimal EAF steelmaking process of 50% HM ratio with carbon powder and coal gas added is suggested, and the consumption of carbon powder and natural gas should be limited within 19.58 kg and 11.63 Nm3. This research is expected to provide some theoretical and operation guidance for low consumption and high efficiency lean production in EAF steelmaking process.

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“…The latent heat and sensible heat make up the physical heat of MS. The physical heat of MS is calculated according to mass and temperature of MS, which is shown as equation (12).…”

Section: Calculation Methodsmentioning

confidence: 99%

“…7 Many foreign EAF mills use scrap and DRI to produce molten steel (MS). [11][12][13][14] This is due to the mature access to scrap and DRI resources with high iron grade. However, the situation in China is quite different.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modelling and techno-economic analysis of electric arc furnace steelmaking process with hot metal charging in China

Hu,

Yang,

Zou

et al. 2024

Ironmaking & Steelmaking: Processes, Products and Applicati

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“…According to reports, the insufficient supply of biochar and poor sinter quality of raw biomass is the most concerning limitation for widespread use in sinter production [105]. Despite biomass-based biochar possessing a huge potential in reducing greenhouse gas emissions as a substitute for fossil carbon in steel production, it remains a challenge [106,107].…”

Section: Biochars In Iron and Steel Industriesmentioning

confidence: 99%

Actual Trends in the Usability of Biochar as a High-Value Product of Biomass Obtained through Pyrolysis

Sajdak

Muzyka

Gałko³

et al. 2022

Energies

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This review comprehensively examines biochar, an essential material in an era of climate change for reducing carbon dioxide (CO2) emissions into the atmosphere. It is inconspicuous, black, lightweight, and very porous, and is produced through the thermal conversion of biomass. Our literature review highlights biochar’s expansive application possibilities. Firstly, its potential to improve soil quality and sequester CO2 has been examined, as well as its utilization in iron and steel manufacturing to minimize the quantity of coke and ultimately reduce CO2 emissions. In industrial manufacturing, the complete elimination of coke can promote environmental neutrality, which is achieved using biochar from biomass for its extrusion. Furthermore, biochar is becoming increasingly significant in modern energy storage technologies and as an important additive in Pickering emulsions, which are also employed in energy storage systems. Additionally, the use of carbon black is a broad topic, and this review illustrates where it can be successfully utilized, especially in environmentally sensitive areas.

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“…In recent years, the amount of scrap steel has continued to increase, and the rapid development of renewable energy has gradually alleviated the lack of power resources. Due to the advantages of short cycle, low investment and low energy consumption per ton of steel, short-process electric furnace steelmaking is about to usher in a golden period of rapid development in China [1][2][3][4][5]. During the operation of the electric furnace, a large amount of smoke and dust is generated, which affects the environment in the workshop.…”

Section: Introductionmentioning

confidence: 99%

Fugitive Emission Characteristics of Fume and Dust from Short-Process Electric Furnace Tap Hole and Optimization of Dust Hood

Wu,

Luan,

2023

Atmosphere

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Due to the advantages of a short cycle, low investment and low energy consumption per ton of steel, short-process electric furnace steelmaking is about to welcome a golden period of rapid development in China. During the operation of the electric furnace, a large amount of smoke and dust is generated. Most studies focus on organized emissions, and the impact of unorganized emissions in workshops on the environment cannot be ignored. This paper evaluates the thermal environment in the electric furnace steelmaking workshop based on the analytic hierarchy process and obtains the influence weight of the fugitive emission location. The mass concentration of dust at each measuring point increased by 1.17 mg/m3 on average, and the concentration of unorganized emission dust near the outlet was 23.572 mg/m3. The numerical simulation calculation model is established by the CFD method, a fixed initial jet velocity is set, the initial velocity of the ladle soot plume is changed, and the inclination angle, arrangement height and dust removal air volume of the dust hood are respectively adjusted in different tapping periods. The impact of simulation on the efficiency of dust collection for different dust removal hood configurations was investigated, considering variations in inclination angle, arrangement height and dust removal airflow. The optimal structural parameters for the dust removal hood were determined to be an inclination angle of 60° and an arrangement height of 2.4 m, and an optimal dust removal airflow was determined to be 110,000 m3/h. This study provides a theoretical foundation for engineering practice.

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Computational fluid dynamics analysis of biochar combustion in a simulated ironmaking electric arc furnace

Cited by 21 publications

References 40 publications

Mathematical modelling and techno-economic analysis of electric arc furnace steelmaking process with hot metal charging in China

Mathematical modelling and techno-economic analysis of electric arc furnace steelmaking process with hot metal charging in China

Actual Trends in the Usability of Biochar as a High-Value Product of Biomass Obtained through Pyrolysis

Fugitive Emission Characteristics of Fume and Dust from Short-Process Electric Furnace Tap Hole and Optimization of Dust Hood

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