Techno-economic assessment of CO2 direct air capture plants
Techno-economic assessment of CO2 direct air capture plants
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DOI：
10.1016/j.jclepro.2019.03.086
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发表时间：
2019-07-01
影响因子：
11.1
通讯作者：
Breyer, Christian
中科院分区：
文献类型：
--
作者：
Fasihi, Mandi;Efimova, Olga;Breyer, Christian
二氧化碳直接空气捕获（DAC）作为一种减缓气候变化的选择越来越多地被讨论。尽管在过去十年中取得了技术进步，但对发援会的当前和长期成本以及能源、水和面积需求仍存在误解。这可能会破坏发援会在中性或负温室气体排放能源系统中的预期作用，并影响决策者。在这项研究中，文献综述和技术经济分析的国家的最先进的DAC技术进行，其中，DAC技术被归类为高温水溶液（HT DAC）和低温固体吸附剂（LT DAC）系统，从能源系统的角度来看。根据2020年至2050年期间发援会能力和财政学习率的两种设想，对发援会的资本支出、能源需求和费用进行了估计。DAC系统的成本可以在2020年代商业化后显着降低，然后在2040年代和2050年代大规模实施，使其与点源碳捕获和负担得起的气候变化缓解解决方案相比具有成本竞争力。它的结论是，LT DAC系统是有利的，由于较低的供热成本和使用从其他系统的废热的可能性。在摩洛哥条件下，由混合光伏-风能-电池系统供电的LT DAC系统的CO2捕集成本基于保守的情景，在2020年，2030年，2040年和2050年分别计算为222/133，105/60，69/40和54/32（sic）/t（CO2）。这些新的研究结果可以加强发援会在成功的气候变化减缓战略中的作用。(C)2019年，任作家。出版社：Elsevier Ltd
CO2 direct air capture (DAC) has been increasingly discussed as a climate change mitigation option. Despite technical advances in the past decade, there are still misconceptions about DAC's current and long-term costs as well as energy, water and area demands. This could undermine DAC's anticipated role in a neutral or negative greenhouse gas emission energy system, and influence policy makers. In this study, a literature review and techno-economic analyses of state-of-the-art DAC technologies are performed, wherein, DAC technologies are categorised as high temperature aqueous solutions (HT DAC) and low temperature solid sorbent (LT DAC) systems, from an energy system perspective. DAC capital expenditures, energy demands and costs have been estimated under two scenarios for DAC capacities and financial learning rates in the period 2020 to 2050. DAC system costs could be lowered significantly with commercialisation in the 2020s followed by massive implementation in the 2040s and 2050s, making them cost competitive with point source carbon capture and an affordable climate change mitigation solution. It is concluded that LT DAC systems are favourable due to lower heat supply costs and the possibility of using waste heat from other systems. CO2 capture costs of LT DAC systems powered by hybrid PV-Wind-battery systems for Moroccan conditions and based on a conservative scenario, without/with utilisation of free waste heat are calculated at 222/133, 105/60, 69/40 and 54/32 (sic)/t(CO2) in 2020, 2030, 2040 and 2050, respectively. These new findings could enhance DAC's role in a successful climate change mitigation strategy. (C) 2019 The Authors. Published by Elsevier Ltd.