An integrated techno-economic and environmental assessment for carbon capture in hydrogen production by biomass gasification
An integrated techno-economic and environmental assessment for carbon capture in hydrogen production by biomass gasification
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DOI：
10.1016/j.resconrec.2022.106693
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发表时间：
2023-01
期刊：
影响因子：
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通讯作者：
Na Wu;Kai Lan;Yuan Yao
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文献类型：
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作者：
Na Wu;Kai Lan;Yuan Yao
碳捕获与储存生物能源（BECCS）是应对气候变化和区域野火以及支持循环经济的潜在解决方案。本研究通过开发一个集成了过程模拟、技术经济分析 (TEA) 和生命周期评估 (LCA) 的框架，研究了在美国西部通过气化森林残留物在氢气生产中实施碳捕获 (CC) 的 BECCS 途径的经济和环境绩效。结果表明，与化石制氢相比，森林残留物制氢在经济上具有竞争力（1.52-2.92 美元/千克氢气）。由于额外的能源和化学品消耗，采用 CC 会增加对环境的影响，这可以通过能源自给自足设计来缓解，该设计可将 2,000 干短吨/天工厂的 CC 成本降低至 75 美元/吨二氧化碳，或者通过使用太阳能和风能等可再生能源。与电解和基于化石燃料的CC路线相比，只有BECCS可以提供负碳氢，并且在对人类健康的影响和近期经济方面更有利。
Bioenergy with carbon capture and storage (BECCS) is a potential solution addressing climate change andregional wildfires, and supporting circular economy. This study investigates the economic and environmental performance of a BECCS pathway implementing carbon capture (CC) in hydrogen production via gasifying forest residues in the American West, by developing a framework that integrates process simulations, techno-economic analysis (TEA), and life cycle assessment (LCA). The results show that forest residue-derived hydrogen is economically competitive ($1.52– 2.92/kg H2) compared with fossil-based hydrogen. Incorporating CC increases environmental impact due to additional energy and chemical consumption, which can be mitigated by the energy self-sufficiency design that reduces CC cost to $75/tonne of CO₂ for a 2,000 dry short ton/day plant, or by using renewable energy such as solar and wind. Compared to electrolysis and fossil-based routes with CC, only BECCS can provide carbon-negative hydrogen and is more favorable regarding human health impact and near-term economics.