Reducing the environmental impact of international aviation through sustainable aviation fuel with integrated carbon capture and storage
Reducing the environmental impact of international aviation through sustainable aviation fuel with integrated carbon capture and storage
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DOI：
10.1016/j.enconman.2024.118186
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发表时间：
2024-02-14
影响因子：
10.4
通讯作者：
Roder，Mirjam
中科院分区：
文献类型：
--
作者：
Almena，Alberto;Siu，Regina;Roder，Mirjam
可持续航空燃料（SAF）是减少航空化石碳排放的短期解决方案。国际航空碳抵消和减排计划（CORSIA）在全球范围内得到采用，以促进和提高SAF生产的经济竞争力。以森林废弃物为原料生产的费托合成石蜡基煤油（FT-SPK）是一种很有前途的CORSIA合格燃料。FT转化途径允许整合碳捕获和储存（CCS）技术，这提供了额外的碳抵消能力。对FT-SPK与CCS工艺进行了模拟，对转化途径进行了全面分析。生命周期评估（LCA）与井唤醒的方法进行量化SAF的碳足迹考虑生物和化石碳动力学。结果表明，每千克干生物质可以产生0.09千克FT-SPK，以及其他烃类产品。从油井到唤醒的化石排放量为21.6 gCO 2 e/MJ FT-SPK。当考虑化石和生物源碳动力学时，从大气到永久储存的负碳通量（-20.0 gCO 2 eMJ −1）产生。然而，FT-SPK仅限于与常规Jet A/A1燃料的50%质量混合。使用经过认证的混合物将Jet A/A1的化石排放量减少了37%，净碳通量为正值（30.9 gCO 2 eMJ −1）。对工艺假设变化的敏感性进行了研究。本研究报告的生命周期化石排放量比FT-SPK的CORSIA默认值高出49%。在英国的框架下，只有0.7%的航空燃料需求可以利用国家资源来满足，但在考虑CCS时，可以满足2037年航空减排目标。
Sustainable aviation fuels (SAFs) represent the short-term solution to reduce fossil carbon emissions from aviation. The Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) was globally adopted to foster and make SAFs production economically competitive. Fischer-Tropsch synthetic paraffinic kerosene (FT-SPK) produced from forest residue is a promising CORSIA-eligible fuel. FT conversion pathway permits the integration of carbon capture and storage (CCS) technology, which provides additional carbon offsetting capacities. The FT-SPK with CCS process was modelled to conduct a comprehensive analysis of the conversion pathway. Life-cycle assessment (LCA) with a well-to-wake approach was performed to quantify the SAF’s carbon footprint considering both biogenic and fossil carbon dynamics. Results showed that 0.09 kg FT-SPK per kg of dry biomass could be produced, together with other hydrocarbon products. Well-to-wake fossil emissions scored 21.6 gCO2e per MJ of FT-SPK utilised. When considering fossil and biogenic carbon dynamics, a negative carbon flux (-20.0 gCO2eMJ−1) from the atmosphere to permanent storage was generated. However, FT-SPK is limited to a 50 %mass blend with conventional Jet A/A1 fuel. Using the certified blend reduced Jet A/A1 fossil emissions in a 37 %, and the net carbon flux resulted positive (30.9 gCO2eMJ−1). Sensitivity to variations in process assumptions was investigated. The lifecycle fossil-emissions reported in this study resulted 49 % higher than the CORSIA default value for FT-SPK. In a UK framework, only 0.7 % of aviation fuel demand could be covered using national resources, but the emission reduction goal in aviation targeted for 2037 could be satisfied when considering CCS.