Incorporating biochar into fuels system of iron and steel industry: carbon emission reduction potential and economic analysis

Meng, Fan; Rong, Guoqiang; Zhao, Ruiji; Chen, Bo; Xu, Xiaoyun; Qiu, Hao; Cao, Xinde; Zhao, Ling

doi:10.1016/j.apenergy.2023.122377

Cited by 9 publications

(5 citation statements)

References 68 publications

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“…Biochar was shown to be effective in reducing carbon dioxide emissions across multiple steelmaking processes. The estimated percentage of emission reduction in BF applications ranged 5-15% in iron sintering, 20-50% if considering different overall BF applications, reaching up to almost 70% in modeled macro-level scenarios [48]. For EAF applications, predictions foresaw a GHG emission decrease of about 41%.…”

Section: Discussionmentioning

confidence: 99%

“…Authors generally view the replacement of coal or coke with biochar favorably, even if it does not directly result in CO 2 reduction, as the biomass used to produce biochar is considered carbon neutral. Overall, the potential for increasing biochar substitution in BF is deemed promising compared to EAF, given the environmental advantages, as the volume and impact of BF are nearly three-fourths that of EAFs [48]. While technical feasibility is relevant, there are other factors to be taken into account, such as the ability to produce biochar with the required characteristics in an economically and environmentally sustainable manner.…”

Section: Discussionmentioning

confidence: 99%

“…Models developed in different studies predicted the emission decrease due to biochar use in steelmaking. Meng et al, (2024) [48] estimated an emission reduction percentage of about 68% using wood-or straw-derived biochar, hypothesizing a replacement of 50% in sintering and BF, and 5% in coke making. The same study modeled the reduction of GHG emissions due to complete wood-or straw-derived biochar replacement in the EAF route, expected to be about 40% [48].…”

Section: Biochar Co 2 Reduction Contribution In the Steelmaking Industrymentioning

confidence: 99%

“…Meng et al, (2024) [48] estimated an emission reduction percentage of about 68% using wood-or straw-derived biochar, hypothesizing a replacement of 50% in sintering and BF, and 5% in coke making. The same study modeled the reduction of GHG emissions due to complete wood-or straw-derived biochar replacement in the EAF route, expected to be about 40% [48]. A review reported a reduction of about 6-57% in coke making and sintering, respectively [10].…”

Section: Biochar Co 2 Reduction Contribution In the Steelmaking Industrymentioning

confidence: 99%

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Potential and Environmental Benefits of Biochar Utilization for Coal/Coke Substitution in the Steel Industry

Al Hosni,

Domini,

Vahidzadeh

et al. 2024

Energies

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The metallurgical sector is one of the most emission- and energy-intensive industries. The possibility of using fossil carbon substitutes has been investigated to reduce the environmental impact of the steelmaking sector. Among others, biochar emerged as a promising fossil coal/coke substitute. We conducted a literature review on biochar use in the metallurgical sector and its potential environmental benefits. The possibility for biochar as a coal/coke substitute is influenced by the source of biochar production and the process within which it can be used. In general, it has been observed that substitution of biochar ranging from a minimum of 5% to a maximum of 50% (mostly around 20–25%) is possible without affecting, or in some cases improving, the process, in coke making, iron sintering, blast furnaces and electric furnaces application. In some studies, the potential CO2 reduction due to biochar use was estimated, ranging from 5% to about 50%. Despite there still being an area of further investigation, biochar appeared as a promising resource with a variety of uses in the metallurgical sector, contributing to the lowering of the environmental impact of the sector.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Biochar Co 2 Reduction Contribution In the Steelmaking Industrymentioning

confidence: 99%

Section: Biochar Co 2 Reduction Contribution In the Steelmaking Industrymentioning

confidence: 99%

See 2 more Smart Citations

Potential and Environmental Benefits of Biochar Utilization for Coal/Coke Substitution in the Steel Industry

Al Hosni,

Domini,

Vahidzadeh

et al. 2024

Energies

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show abstract

“…Steel is the most critical material for engineering and construction, playing a key role in global economic development. In 2022, global crude steel production reached a record high of 1.878 billion tons [1], and the steel demand is expected to increase by over 33% by 2050 [2].…”

Section: Introductionmentioning

confidence: 99%

Stochastic Capacity Optimization of an Integrated BFGCC–MSHS–Wind–Solar Energy System for the Decarbonization of a Steelmaking Plant

Geng,

Shi,

Chen

et al. 2024

Energies

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Deploying renewable generation to replace conventional fossil-fuel-based energy supplies provides an important pathway for the decarbonization of steelmaking plants. Meanwhile, it is also crucial to improve the flexibility of blast-furnace-gas-fired combined-cycle power plants (BFGCCs) to ease the accommodation of uncertain renewable generation. To this end, this paper proposes the deployment of a molten salt heat storage (MSHS) system in BFGCCs to store the heat of gas turbine flue gas so that the power–heat coupling of these BFGCCs can be unlocked to enhance the flexibility of the energy supply. A stochastic capacity optimization of an integrated BFGCC–MSHS–wind–solar (BMWS) energy system is presented to determine the optimal installed capacities of a BFG holder, MSHS, wind turbine, and PV panel, aiming to achieve an economic and safe energy supply for the entire system. Multiple scenarios considering uncertain fluctuations in load demands and renewable generation are generated with the Monte Carlo method based on a typical scenario. These scenarios are then reduced to representative scenarios using the synchronous substitution and reduction method for stochastic capacity optimization to enhance the reliability of the results. The case study results demonstrate that configuring MSHS reduces the total annualized cost of the BMWS system by 2.28%. Furthermore, considering the uncertainties of the power/heating load and wind/PV generation can reduce the expected annualized total cost of the BMWS system and the corresponding standard deviation by 5.66% and 81.45%, respectively. The BMWS system can achieve 730.68 tons of equivalent CO2 reduction in 24 h due to the successful utilization of renewable energy. This paper provides an effective approach for the decarbonization of energy generation systems in steelmaking plants.

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Biochar as a Sustainable Alternative to Pulverized Coal: Comprehensive Analysis of Physicochemical Properties, Combustion Performance, and Environmental Impact

Liu,

Sun

2024

Energy Tech

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This study comprehensively evaluates the potential of biochar as a substitute for high‐rank pulverized coal in various aspects including physicochemical properties, combustion performance, environmental emissions, and application costs. Biochar, characterized by its small particle size, reduced emissions, high volatility, elevated calorific value, and facile combustion, emerges as a promising alternative fuel to pulverized coal. Despite a lower ignition temperature, biochar demonstrates superior burnout efficiency and combustion kinetics, as indicated by its lower activation energy compared to pulverized coal. Moreover, considering China's substantial energy consumption, the substitution of coal with biochar could significantly reduce CO2 and SO2 emissions, making it a viable strategy for mitigating environmental pollution. In addition, the application cost of biochar is not higher than that of pulverized coal. This study underscores the feasibility and effectiveness of utilizing biochar as a sustainable alternative to high‐rank pulverized coal, offering valuable insights into cleaner and more efficient energy utilization.

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Incorporating biochar into fuels system of iron and steel industry: carbon emission reduction potential and economic analysis

Cited by 9 publications

References 68 publications

Potential and Environmental Benefits of Biochar Utilization for Coal/Coke Substitution in the Steel Industry

Potential and Environmental Benefits of Biochar Utilization for Coal/Coke Substitution in the Steel Industry

Stochastic Capacity Optimization of an Integrated BFGCC–MSHS–Wind–Solar Energy System for the Decarbonization of a Steelmaking Plant

Biochar as a Sustainable Alternative to Pulverized Coal: Comprehensive Analysis of Physicochemical Properties, Combustion Performance, and Environmental Impact

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