Multi-Dimensional Optimization of Coal–RDF–Ammonia Fuel Blends: Exergetic Efficiency and Environmental Impact
石炭-RDF-アンモニア燃料混合物の多次元最適化：エクセルギー効率と環境影響 (AI 翻訳)
Chavando, Antonio, Braga, Patrícia Crespo, Eusébio, Daniela, Silva, Valter Bruno
🤖 gxceed AI 要約
日本語
本研究は、石炭火力発電所の低炭素化に向けて、石炭、RDF、アンモニアの三元混焼システムを熱力学的・環境的に評価した。アスペンプラスによる平衡シミュレーションと応答曲面法（RSM）を用いて、燃焼室のエクセルギー効率を最大化し、CO2、SOx、NOx排出を最小化する最適な混合組成を特定。アンモニアリッチなブレンドは平衡効率を向上させるが、実機でのNOx増加リスクがあり、高度な燃焼制御が必要。三元混焼は既存石炭火力の移行的脱炭素経路として有望。
English
This study presents an integrated thermodynamic and environmental assessment of coal-RDF-ammonia co-firing for low-carbon power generation. Using Aspen Plus simulation and Response Surface Methodology optimization, the authors identify an optimal blend that maximizes exergetic efficiency and minimizes equilibrium CO2, SOx, and NOx emissions relative to pure coal. A key trade-off exists: ammonia-rich blends improve equilibrium efficiency but may increase kinetic NOx formation, requiring advanced combustion control. Ternary co-firing is positioned as a promising transitional decarbonization pathway for existing coal fleets.
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
日本でも石炭火力のアンモニア混焼が注目されており（JERA等）、本論文で示されたRDF・アンモニア三元混焼の最適化手法は、既存設備の効率的な脱炭素化に示唆を与える。特に、平衡効率と実機NOx排出のトレードオフは、今後の実証試験での制御技術開発に重要。
In the global GX context
Globally, this paper contributes to the literature on co-firing ammonia and waste-derived fuels in existing coal plants, a transitional pathway relevant for countries with large coal fleets (e.g., China, India, Japan). The RSM optimization framework and identified trade-off between equilibrium efficiency and kinetic NOx highlight the need for advanced combustion control in real-world deployment.
👥 読者別の含意
🔬研究者:Useful for researchers in coal phase-down, co-firing optimization, and ammonia combustion kinetics.
🏢実務担当者:Plant operators considering ammonia co-firing can use the blend optimization approach and need to plan for NOx control technologies.
🏛政策担当者:Policymakers in coal-dependent economies can consider ternary co-firing as a transitional technology but must account for NOx control investments.
📄 Abstract（原文）
Coal-fired power generation remains a major source of anthropogenic greenhouse-gas emissions, motivating low-carbon co-firing strategies compatible with existing infrastructure. This study presents an integrated thermodynamic and environmental assessment of a ternary coal–RDF–ammonia co-firing system, combining Aspen Plus equilibrium simulation, second-law exergy analysis based on the Szargut–Styrylska correlation, and Response Surface Methodology (RSM) optimization. Twelve blend compositions spanning a wide range of coal, refuse-derived fuel (RDF), and ammonia fractions were evaluated. A validated optimum blend was identified that simultaneously maximizes combustion-chamber exergetic efficiency and minimizes equilibrium CO 2 , SO x , and NO x emissions relative to a pure-coal baseline. The RSM model achieved excellent statistical fit and identified the directional sensitivity of efficiency to the RDF and ammonia content. A key trade-off is identified between thermodynamic performance and kinetic NO x risk: ammonia-rich blends improve equilibrium-based efficiency but may increase real kinetic NO x formation, requiring advanced combustion control for safe industrial deployment. These findings position ternary co-firing as a promising transitional decarbonization pathway for the existing coal fleet.
🔗 Provenance — このレコードを発見したソース
- Zenodo https://zenodo.org/records/21381828first seen 2026-07-16 04:11:42
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