脱化石甲醇生产的影响:一项关于碳来源的研究
Ivonne Servin-Balderas1, Koen Wetser1, Cees Buisman2
1Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands.
Journal of environmental management
|February 20, 2024
概括
化学工业向碳中和过渡需要去化石化碳来源来生产甲醇. 直接捕获空气 (DAC) 是除化石化甲醇的唯一可持续的长期来源,尽管最初的资源需求.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 可持续化学 可持续化学
- 工业生态学 工业生态学
背景情况:
- 化学工业严重依赖化石燃料,需要转向碳中和替代品.
- 甲醇是关键的基础化学物质,作为各种其他必需化学物质的前体,如烯酸和芳香物质.
研究的目的:
- 评估各种脱化石碳来源的甲醇合成的可行性.
- 评估与每个碳源相关的资源需求 (碳,能源,水,土地).
- 分析脱化石甲醇生产的地理可行性.
主要方法:
- 使用玉米,废弃生物质,直接空气捕获 (DAC) 和水泥行业CO2的甲醇生产的碳足迹分析.
- 量化每个原料的能源,水和土地需求.
- 荷兰,沙特阿拉伯,中国和美国生产潜力的比较评估.
主要成果:
- 玉米,废弃生物质和水泥二氧化碳可以分别提供0.7倍,2倍和15倍的甲醇碳需求.
- 能源需求范围从21到48 GJ/MeOH,水从8到5300 m3/MeOH,土地从36到1031 m2/MeOH.
- 中国显示出满足水泥二氧化碳需求的潜力,但这种来源有限.
结论:
- 脱化石甲醇的生产是资源密集型的,取决于地点.
- 虽然水泥二氧化碳目前在中国等一些地区是可行的,但其减少的可用性需要替代解决方案.
- 直接捕获空气 (DAC) 成为甲醇合成中脱化石碳的唯一可扩展和可持续的长期来源.
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