Energy Transition in the Cement Industry: Decarbonization Pathways and the Role of Hydrogen
セメント産業のエネルギー転換：脱炭素経路と水素の役割 (AI 翻訳)
Alessandro Franco, Wilfried Marius Simo Toukam
🤖 gxceed AI 要約
日本語
セメント製造の代表的なマス・エネルギーバランスに基づき、熱需要と石灰石由来のプロセス排出を定量化。省エネ、クリンカ代替、代替燃料、電化、水素、CCSの各脱炭素経路を比較。水素は酸素燃焼と組み合わせることで燃焼由来排出を50～200kgCO2/セメントトン削減可能とし、深い削減にはCCSが必要と結論。
English
Based on representative mass and energy balances, this study quantifies cement-sector emissions (500–850 kg CO2/t) and compares decarbonization levers. Energy efficiency and clinker substitution give partial gains, hydrogen can cut combustion emissions by 50–200 kg CO2/t, and deep decarbonization requires CCS to address process emissions.
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
日本のセメント産業でも石灰石由来のプロセス排出がScope1の大宗を占め、SSBJ開示やGX移行計画で削減経路の説明が求められる。本稿の経路別ポテンシャル比較は、水素・CCSを含む技術選択の根拠として有用。
In the global GX context
Provides a quantitative benchmark for hard-to-abate industrial decarbonization, useful for TCFD/ISSB transition planning and for assessing hydrogen and CCS roles in cement, a sector often highlighted in CSRD and net-zero frameworks.
👥 読者別の含意
🔬研究者:Useful benchmark data and pathway comparison for modeling cement decarbonization and hydrogen/CCS roles.
🏢実務担当者:Cement producers can prioritize measures (efficiency, alternative fuels, hydrogen oxy-fuel, CCS) from quantified ranges.
🏛政策担当者:Supports designing support schemes for hydrogen and CCS infrastructure in hard-to-abate sectors.
📄 Abstract（原文）
The cement industry is one of the most challenging sectors to decarbonize due to the coexistence of high-temperature thermal demand and process-related emissions from limestone calcination. This study presents an energy and emissions assessment of cement manufacturing based on representative mass and energy balances derived from literature benchmarks and industrial operating data. Typical cement production requires 2.8–3.6 GJ of thermal energy and 80–120 kWh of electricity per tonne of final product, resulting in total emission in the range 500–850 kg CO2/t cement, of which 55–65% originate from clinker calcination. Moving from this baseline, possible decarbonization pathways are evaluated, including energy efficiency improvements, clinker substitution through supplementary cementitious materials use of alternative fuels, electrification, hydrogen utilization and carbon capture technologies. The analysis shows that energy efficiency measures provide relatively limited reductions (10–30 kg CO2/t cement), while alternative fuels and clinker substitution can achieve larger but still partial benefits. Hydrogen emerges as a promising option for decarbonizing the combustion-related share of emissions, with a potential reduction ranging from 50 to 200 kg CO2/t cement, particularly when integrated with oxy-fuel combustion systems. Deep decarbonization ultimately requires carbon capture and storage (CCS), the only technology capable of addressing the substantial process emissions inherent to clinker production and use of hydrogen can be relevant too.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.3390/hydrogen7030105first seen 2026-07-31 07:23:14
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