Life-Cycle Exergy Evaluation of Power Generation from Underground Coal Gasification with CCS
CCSを伴う地下石炭ガス化発電のライフサイクルエクセルギー評価 (AI 翻訳)
Ye Feng, Jinglong Chen
🤖 gxceed AI 要約
日本語
本研究は、地下石炭ガス化複合発電（UGCC）にCCSを組み合わせたシステムのライフサイクル全体を対象に、エクセルギー分析を用いて資源利用効率と環境持続可能性を評価した。Aspen Plusに基づくモデルを構築し、IGCCとの比較分析を行った結果、CCS導入により総合的な持続可能性が向上し、酸素/石炭比0.6、水/石炭比0.1でエクセルギー効率37.56%を達成した。地下ガス化ユニットが効率の重要な要因であることを特定した。
English
This study evaluates the full life-cycle resource and environmental sustainability of underground coal gasification combined cycle (UGCC) power generation with CCS using exergy analysis. An Aspen Plus-based model was developed and compared with IGCC, finding that CCS retrofitting significantly enhances overall sustainability, achieving 37.56% exergy efficiency at optimal ratios. The underground gasification unit is identified as the critical factor affecting efficiency.
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
日本の電力業界では、石炭火力のフェードアウトが進む中、CCS技術は既存インフラの活用策として注目されている。本研究成果は、CCS導入による効率と環境負荷のトレードオフを定量的に示しており、日本の石炭火力の転換戦略や、SSBJ開示におけるScope 1排出削減計画の裏付けとして参考になる。
In the global GX context
Globally, this paper contributes to the CCS literature by providing a life-cycle exergy perspective that goes beyond single-stage efficiency analysis. It offers a comparative framework for assessing CCS retrofits on coal-based power, relevant to jurisdictions like the US and EU where CCS is part of the transition strategy. The findings support decision-making for low-carbon power supply systems and align with TCFD/ISSB disclosure requirements for transition planning.
👥 読者別の含意
🔬研究者:Provides a novel life-cycle exergy assessment framework for UGCC-CCS systems, useful for comparative sustainability studies.
🏢実務担当者:Offers quantitative insights into CCS retrofitting trade-offs, aiding power plant investment and disclosure decisions.
🏛政策担当者:Highlights the sustainability potential of CCS-equipped coal gasification, informing low-carbon energy policy.
📄 Abstract（原文）
Under the carbon neutrality context, underground coal gasification combined cycle (UGCC) power generation with carbon capture and storage (CCS) technology can effectively mitigate climate change and reduce pollutant emissions. However, due to the complexity of the UCG process and significant fluctuations in syngas composition, the overall power generation efficiency of the plant may be affected to some extent. Existing studies have predominantly focused on single-link energy efficiency analysis, with a lack of full life-cycle resource–environment synergistic evaluation based on the extended exergy analysis framework, and comparative sustainability research between UGCC and integrated gasification combined cycle (IGCC) systems remains inadequate. Accordingly, this study establishes an exergy Life-Cycle Assessment model for UGCC power plants based on Aspen Plus, systematically evaluates the resource utilization rate and environmental sustainability index, identifies key influencing factors, and conducts a comparative analysis with IGCC power plants. The results indicate that the comprehensive sustainability performance of UGCC power plants is significantly enhanced after CCS retrofitting, with exergy efficiency reaching 37.56% at an oxygen-to-coal ratio of 0.6 and a water-to-coal ratio of 0.1; compared with IGCC, UGCC demonstrates a superior resource utilization rate but relatively weaker environmental sustainability; and the underground gasification unit is the critical link affecting exergy efficiency. This study offers a new perspective for sustainability assessment of energy systems and provides theoretical support and technical reference for the construction of a low-carbon reliable supply system in the power industry, thereby facilitating the implementation and refinement of a novel sustainable energy system.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/atmos17080768first seen 2026-08-11 04:40:55
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