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Hydrogen Production via Biomass Oxy-Steam Gasification Powered by Nuclear Microreactor Generated Steam: An Aspen Plus Study

原子力マイクロリアクター生成蒸気を用いたバイオマス酸素-蒸気ガス化による水素製造:Aspen Plus研究 (AI 翻訳)

Prajapati G, Kumar S, Singh S

Research Squareプレプリント2026-08-03#水素経営インパクト: コスト削減対象セクター: energy
DOI: 10.21203/rs.3.rs-8791582/v1
原典: https://doi.org/10.21203/rs.3.rs-8791582/v1

🤖 gxceed AI 要約

日本語

本研究は、原子力マイクロリアクターの蒸気を利用したバイオマス酸素-蒸気ガス化による低炭素水素製造の技術的実現性を、Aspen Plus平衡モデルで検証した。5MWeの原子炉が約11.25MWの熱を供給し、8トン/時のガス化炉を稼働。水素収率はバイオマス1kgあたり88-97g、合成ガス中の水素濃度は55-58vol%に達し、CO₂生成を低減し水素選択性を向上させた。

English

This study validates the technical feasibility of low-carbon hydrogen production via biomass oxy-steam gasification powered by a nuclear microreactor using an Aspen Plus equilibrium model. A 5 MWe reactor supplies ~11.25 MW of heat to operate an 8 t/h gasifier, achieving hydrogen yields of 88-97 g/kg biomass and syngas with 55-58 vol% H2, while reducing CO2 formation and enhancing hydrogen selectivity.

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

日本は水素基本戦略を掲げ、原子力と再エネを組み合わせた低炭素水素供給を模索している。本研究成果は、既存の原子力インフラや将来の小型原子炉とバイオマス資源を活用した国産水素製造の可能性を示し、エネルギー安全保障とGX推進に寄与する。

In the global GX context

Globally, this work contributes to the discourse on clean hydrogen production by integrating nuclear energy with biomass gasification, offering a dispatchable and low-carbon pathway that complements intermittent renewables. It aligns with international efforts to scale up hydrogen infrastructure and decarbonize hard-to-abate sectors.

👥 読者別の含意

🔬研究者:Provides a validated Aspen Plus model for nuclear-biomass hydrogen production, useful for further process optimization and integration studies.

🏢実務担当者:Offers a conceptual design for low-carbon hydrogen production that could inform feasibility studies for industrial-scale deployment.

🏛政策担当者:Highlights a potential technology pathway for clean hydrogen that could be considered in national hydrogen strategies and energy transition policies.

📄 Abstract(原文)

<title>Abstract</title> <p>Biomass oxy-steam gasification is a promising route for low-carbon hydrogen production, but reliance on fossil-fuel boilers for steam limits both lifecycle emissions reduction and operational reliability, highlighting the need for a low-carbon steam supply. This study presents an Aspen Plus equilibrium model of hydrogen production via biomass oxy-steam gasification powered by a nuclear microreactor, employing a steady-state Gibbs-equilibrium approach. The model integrates a microreactor-based steam generator, an air separation unit for oxygen supply, an oxy-steam downdraft gasifier, a water-gas shift reactor, and pressure swing adsorption for hydrogen purification, and is validated against experimental literature data. The nuclear microreactor, with a thermal capacity below 20 MW, provides ~11.25 MW of process heat from a 5 MWe unit, sufficient to operate an 8 ton/h gasifier. Simulation results indicate hydrogen yields of 88–97 g/kg of biomass, with syngas containing 55–58 vol% hydrogen. The nuclear-supplied steam stabilizes reactor operation, reduces CO₂ formation, and enhances hydrogen selectivity. These findings demonstrate the technical viability of combining nuclear microreactor-supplied steam with biomass oxy-steam gasification, offering a scalable, dispatchable, and low-carbon pathway to support the net-zero energy transition.</p>

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