Carbon Engineering Ltd, EEEL467, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4.
Philos Trans A Math Phys Eng Sci. 2012 Sep 13;370(1974):4380-403. doi: 10.1098/rsta.2012.0137.
We present a conceptually simple method for optimizing the design of a gas-liquid contactor for capture of carbon dioxide from ambient air, or 'air capture'. We apply the method to a slab geometry contactor that uses components, design and fabrication methods derived from cooling towers. We use mass transfer data appropriate for capture using a strong NaOH solution, combined with engineering and cost data derived from engineering studies performed by Carbon Engineering Ltd, and find that the total costs for air contacting alone-no regeneration-can be of the order of $60 per tonne CO(2). We analyse the reasons why our cost estimate diverges from that of other recent reports and conclude that the divergence arises from fundamental design choices rather than from differences in costing methodology. Finally, we review the technology risks and conclude that they can be readily addressed by prototype testing.
我们提出了一种概念简单的方法，用于优化用于从环境空气中（即“空气捕获”）捕获二氧化碳的气液接触器的设计。我们将该方法应用于使用源自冷却塔的组件、设计和制造方法的板状几何接触器。我们使用适用于使用强 NaOH 溶液进行捕获的传质数据，结合来自 Carbon Engineering Ltd 进行的工程研究得出的工程和成本数据，发现仅用于空气接触的总成本-无需再生-每吨 CO2 的成本约为 60 美元。我们分析了我们的成本估算与其他最近报告的差异的原因，并得出结论认为，这种差异是由基本设计选择而不是成本估算方法的差异引起的。最后，我们审查了技术风险，并得出结论认为，原型测试可以轻松解决这些风险。
