二氧化碳的技术经济评估电解:模型变量之间的相互依赖如何在不同的建模尺度上传播
Isabell Bagemihl1, Lucas Cammann1, Mar Pérez-Fortes2
1Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
ACS sustainable chemistry & engineering
|July 14, 2023
概括
通过电化学方法将二氧化碳 (CO2) 转化为基化学物质是可持续能源转型的关键. 这项研究表明,优化电解器设计需要考虑性能变量的相互依赖性,这可能会降低高效二氧化碳电解的经济目标.
科学领域:
- 电化学 电化学 电化学
- 化学工程是化学工程的重要组成部分.
- 可持续能源 可持续能源
背景情况:
- 捕获的二氧化碳 (CO2) 的电化学转化提供了一个关闭碳循环的途径,并支持能源转型.
- 研究正在从实验室规模的可行性发展到工业应用,重点是电解剂的设计和操作.
- 当前的技术经济分析往往忽略了关键性能变量之间的关键相互依赖,如电流密度,法拉达效率和转换.
研究的目的:
- 为性膜电解剂开发一个多尺度模型,其中包含了质量转移效应.
- 分析二氧化碳电解中的性能变量的相互依赖影响的经济权衡.
- 为工业二氧化碳转化系统提供更准确的经济前景.
主要方法:
- 开发了一种模型,捕捉性膜电解器沿通道长度的质量转移效应.
- 合道尺度现象与更高层次的过程尺度.
- 在分析的经济框架内嵌入多尺度模型.
主要成果:
- 性能变量的导出目标值对在道规模上建模的相互依赖性高度敏感.
- 经济上最佳的电流密度可能比以前建立的基准值要低得多 (高达一半).
- 该研究量化了忽视性能变量相互依存的经济影响.
结论:
- 多尺度建模对于准确评估和优化二氧化碳电解系统至关重要.
- 了解相互依存关系对于识别瓶和设计经济上可行的二氧化碳转化技术至关重要.
- 这项工作为未来的研究方向提供了信息,以实现高效和成本效益的碳捕获和利用.
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