Simulation Study, Techno-Economic, and Environmental Assessment of Hydrogen-Based DRI Production for Sustainable Steel Industry
持続可能な鉄鋼業のための水素ベース直接還元鉄生産のシミュレーション研究、技術経済・環境評価 (AI 翻訳)
Yoo Ri Kim, Jeong-Cheol Lee, Sang Hwan Son, Shikyung Yoon, Dong Hwi Jeong
🤖 gxceed AI 要約
日本語
本研究は、多段流動層反応器を用いた水素ベース直接還元鉄（DRI）プロセスの技術経済性と環境影響を評価。実験データに対してR2>0.999の高精度で検証されたモデルを使用し、再生可能エネルギーシナリオではCO2排出を従来比98.1%削減できることを示した。初期コストは高いが、炭素価格が1.44 USD/tCO2eで天然ガス方式と同等になり、韓国排出権取引価格（20.66 USD/tCO2e）では経済的優位性を得られる。
English
This study evaluates the techno-economic and environmental performance of hydrogen-based direct reduced iron (DRI) production using multi-stage fluidized bed reactors. The model achieved high accuracy (R2>0.999) against experimental data. Under a renewable energy scenario, CO2e emissions were reduced by 98.1% compared to blast furnaces. Although initial cost is high, cost competitiveness with natural gas-based DRI is achieved at a carbon price of 1.44 USD/tCO2e; at the 2018 Korea ETS price, it offers a 7.39% cost advantage.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本でも水素還元製鉄（COURSE50など）が進められており、本論文は水素コストと炭素価格の関係を定量的に示すことで、日本の政策立案や企業の投資判断に参考となる。特に、炭素価格閾値（1.44 USD/tCO2e）の提示は、日本のカーボンプライシング議論に直接貢献する。
In the global GX context
As global steelmakers explore hydrogen-based routes, this paper provides a rigorous techno-economic model linking green hydrogen integration with carbon pricing. The finding that a carbon price as low as $1.44/tCO2e can make renewable-based DRI competitive with natural gas is highly relevant for international climate policy and industrial decarbonization strategies.
👥 読者別の含意
🔬研究者:Provides a validated model for hydrogen-based DRI with high accuracy, useful for further optimization and scaling studies.
🏢実務担当者:Offers clear cost benchmarks and carbon price thresholds to assess the viability of hydrogen-based DRI investments.
🏛政策担当者:Demonstrates that moderate carbon pricing can enable green hydrogen in steelmaking, supporting carbon pricing design.
📄 Abstract（原文）
The iron and steel industry is a major contributor to global carbon emissions, necessitating an urgent transition to sustainable production technologies. This study investigates the techno-economic feasibility and environmental impact of a hydrogen-based direct reduced iron (DRI) production process via multi-stage fluidized bed reactors, focusing on the ironmaking stage and excluding downstream steelmaking routes. A comprehensive process model was developed incorporating reduction kinetics and validated against experimental data, achieving high predictive accuracy with an R2 exceeding 0.999. The environmental assessment reveals that the renewable energy-based scenario achieves specific CO2 equivalent (CO2e) emissions of 36.8 kg per ton of hematite, corresponding to a 98.1% reduction compared to the conventional blast furnace baseline. Although the initial techno-economic analysis indicates a higher unit production cost of 636.83 USD/ton due to renewable energy costs, the sensitivity analysis demonstrates that cost competitiveness against the natural gas-based scenario is secured at a carbon price threshold of 1.44 USD/tCO2e. Furthermore, under the 2018 average Korea Emission Trading System price of 20.66 USD/tCO2e, the cost deceases to 589.76 USD/ton, offering a 7.39% economic advantage over the grid-based alternative. These findings indicate that green hydrogen integration and carbon pricing can bridge economic gaps, supporting economically viable low-carbon DRI production.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/pr14040651first seen 2026-05-15 17:32:46
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