Dual Technical and Environmental Assessment of the Transition from Grey to Green Hydrogen in the Haber–Bosch Process: A Modelling and Simulation Approach
ハーバー・ボッシュ法におけるグレー水素からグリーン水素への移行の技術的・環境的評価：モデリングとシミュレーションアプローチ (AI 翻訳)
Nour El Imene Brahmi, K. Kerboua
🤖 gxceed AI 要約
日本語
本論文は、Fertialアンモニア工場を事例に、ハーバー・ボッシュ法におけるグレー水素からグリーン水素への転換を評価。プロセスシミュレーションとシステムレベルの質量・エネルギー・排出量計算により、8.9MWh/tNH3の電力需要と27-34m3/tNH3の水消費量を示した。再生可能電力を用いると、排出量を最大64%、化石資源使用量を71%削減可能だが、水消費や水素純度変動が課題となる。
English
This paper evaluates the transition from grey to green hydrogen in the Haber-Bosch process using a case study of the Fertial ammonia plant. Through process simulation and system-level mass, energy, and emission accounting, it shows an electrical demand of 8.9 MWh/t NH3 and water consumption of 27–34 m3/t NH3. Renewable electrolysis reduces emissions by up to 64% and fossil resource use by 71% compared to grey hydrogen, but high water consumption and hydrogen purity fluctuations pose challenges.
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
本論文はアルジェリアの事例だが、日本の水素戦略やグリーンアンモニア製造技術の検討に有用な定量的データを提供する。特に水消費量やプロセス安定性の課題は、日本の再生可能エネルギー導入計画において重要な知見となる。
In the global GX context
This technical assessment provides critical quantitative data for the global transition to green ammonia, a key component of decarbonizing fertilizer production. The findings on water consumption and process stability under variable renewable conditions are relevant for countries scaling up green hydrogen projects, especially in regions with water scarcity.
👥 読者別の含意
🔬研究者:Provides detailed modeling methodology and quantitative results on green hydrogen integration in ammonia production, useful for process engineers and energy system modelers.
🏢実務担当者:Offers specific energy and water consumption figures and operational challenges that plant operators and project developers should consider when designing green ammonia facilities.
🏛政策担当者:Highlights trade-offs between emissions reduction and resource use (water) that need to be addressed in hydrogen subsidy and infrastructure planning.
📄 Abstract（原文）
This work evaluates the transition from grey to green hydrogen in the Haber–Bosch process through a case study of the Fertial ammonia plant. An integrated assessment per ton of NH 3 was conducted using coupled process simulation with system-level mass, energy, and emission accounting, which link the electrolyser dynamics with ammonia loop operation under variable renewable conditions. The results show an electrical demand of 8.9 MWh/t NH 3 and significant water consumption potential of 27–34 m 3 /t NH 3 . Compared with grey ammonia produced via SMR hydrogen (3.65–4.63 t CO 2 /t NH 3 ), renewable electrolysis reduces total emissions by up to 64% and fossil resource use by approximately 71% (case of 100% PV), depending on electricity carbon intensity. While renewable electricity enables ammonia decarbonization, high water consumption potential represents a challenge. Ad-ditionally, hydrogen purity fluctuations and intermittent electrolyser output affect loop conversion and process stability, highlighting the need for heat integration and storage strategies to maintain steady operation.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://www.mdpi.com/3042-5743/42/1/12/pdf?version=1782985834first seen 2026-07-26 06:12:39
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