从二氧化碳到可持续航空燃料:技术导航

IF 7.3 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Pussana Hirunsit*, Alessandro Senocrate, Carlos E. Gómez-Camacho and Florian Kiefer*, 
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引用次数: 0

摘要

可持续喷气燃料在减少航空碳足迹方面发挥着至关重要的作用,为航空业实现净零排放提供了一种前景广阔的方法。这项工作研究了直接利用二氧化碳生产喷气燃料的途径。鉴于许多二氧化碳直接利用技术还处于早期阶段,确定有前途的途径至关重要。我们的研究重点是三种最重要的喷气燃料生产路线,每种路线都采用了不同的中间化合物。这些路线分别是反向水-气变换和费托(RWGS-FT)路线、甲醇路线和二氧化碳电解路线,它们分别采用合成气、甲醇和乙烯作为关键中间体。通过进行全面的工艺模拟并分析每种路线所产生的能源强度、热效率和二氧化碳效率,这些研究结果提供了早期阶段的定量评估,并使我们能够确定关键的技术开发要求。我们的结果表明,甲醇路线的能源强度最低,其次是 RWGS-FT 和二氧化碳电解路线。在 RWGS-FT 和甲醇路线的能源需求中,H2 的生产占了很大一部分。RWGS-FT 路线的二氧化碳效率最低,而甲醇路线的二氧化碳效率(包括回收流)达到 92%,突出了其生产喷气燃料的潜力。此外,二氧化碳电解路线有可能实现接近 100% 的二氧化碳效率,而且所需的 H2 原料也大大减少。然而,它也面临着能源需求高的挑战。此外,我们的研究还调查了潜在技术优化的关键影响,为研究和技术优化提供了指导。这项工作评估了将二氧化碳转化为合成碳氢化合物以生产可持续航空燃料的三种化学工艺。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

From CO2 to Sustainable Aviation Fuel: Navigating the Technology Landscape

From CO2 to Sustainable Aviation Fuel: Navigating the Technology Landscape

Sustainable jet fuel plays a crucial role in reducing aviation’s carbon footprint, offering a promising approach toward net-zero emissions in the aviation sector. This work investigates pathways for producing jet fuels directly from CO2. Given the early stage of many direct CO2 utilization technologies, identifying promising pathways is essential. Our investigation focuses on the three most important routes for jet fuel production, each of which employs a distinct intermediate compound. These routes are the reverse water–gas shift and Fischer–Tropsch (RWGS-FT) route, the methanol route, and the CO2 electrolysis route, which employ syngas, methanol, and ethylene as key intermediates, respectively. By performing comprehensive process simulations and analyzing the resulting energy intensity and thermal and CO2 efficiency of each route, these findings provide quantitative early-stage evaluations and allow us to identify key technical development requirements. Our results indicate that the methanol route exhibits the lowest energy intensity, followed by the RWGS-FT and CO2 electrolysis routes. H2 production accounts for a significant share of the energy demand for the RWGS-FT and methanol routes. The RWGS-FT route shows the lowest CO2 efficiency, while the methanol route achieves 92% CO2 efficiency including recycle streams, highlighting its potential for jet fuel production. Furthermore, the CO2 electrolysis route holds the potential to achieve close to 100% CO2 efficiency and requires significantly less H2 feedstock. However, it faces challenges of a high energy demand. In addition, our study investigates key effects of potential technology optimization, providing a guideline for research and technology optimization.

This work evaluates three chemical processes converting CO2 into synthetic hydrocarbons for sustainable aviation fuel.

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来源期刊
ACS Sustainable Chemistry & Engineering
ACS Sustainable Chemistry & Engineering CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL
CiteScore
13.80
自引率
4.80%
发文量
1470
审稿时长
1.7 months
期刊介绍: ACS Sustainable Chemistry & Engineering is a prestigious weekly peer-reviewed scientific journal published by the American Chemical Society. Dedicated to advancing the principles of green chemistry and green engineering, it covers a wide array of research topics including green chemistry, green engineering, biomass, alternative energy, and life cycle assessment. The journal welcomes submissions in various formats, including Letters, Articles, Features, and Perspectives (Reviews), that address the challenges of sustainability in the chemical enterprise and contribute to the advancement of sustainable practices. Join us in shaping the future of sustainable chemistry and engineering.
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