Carbon Dioxide Capture from Air: A Simple Analysis
Carbon Dioxide Capture from Air: A Simple Analysis
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DOI：
10.1260/0958-305x.23.2-3.319
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发表时间：
2012-05
影响因子：
4.2
通讯作者：
S. Brandani
中科院分区：
文献类型：
--
作者：
S. Brandani
为了比较从空气中直接捕获二氧化碳（即空气捕获）和从化石燃料发电厂捕获二氧化碳，提出了一个简化的分析。关于空气捕获，文献显示了关于技术成本估计的相互矛盾的数据，从30美元/吨CO2到1，000美元/吨CO2不等。这显然造成了不确定性，特别是对于那些必须实施长期政策以减缓气候变化的国家。本文的目的不是为空气捕集分配固定成本，而是表明，与发电厂的碳捕集相比，对空气捕集的成本和能源需求比率进行常识性估计是可能的。这些比率是在大气压下生产高纯二氧化碳流所需的成本的至少10倍和能量的3至4倍。
A simplified analysis is presented in order to compare direct capture of carbon dioxide from air, i.e. air capture, and capture from fossil fuelled power plants. For air capture the literature shows conflicting data on the estimates of the costs of the technology, which range from 30 US$/t CO2 to $1000 US$/t CO2. This clearly creates uncertainty especially for those who have to implement long term policies to mitigate climate change. The aim of this contribution is not to assign a fixed cost to air capture, but to show that it is possible to make a common sense estimate of the ratios of cost and energy requirement of air capture compared to carbon capture from power plants. These ratios are at least 10 times for the cost and 3 to 4 times for the energy needed to produce a high purity carbon dioxide stream at atmospheric pressure.