CO2 capture by antisublimation process and its technical economic analysis
CO2 capture by antisublimation process and its technical economic analysis
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DOI：
10.1002/ghg.1313
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发表时间：
2013-02
影响因子：
2.2
通讯作者：
Pan Xueqin;D. Clodic;Joseph Toubassy
中科院分区：
文献类型：
--
作者：
Pan Xueqin;D. Clodic;Joseph Toubassy
通过反升华捕获CO2包括将烟道气冷却至CO2的冻结温度，并在由烟道气中的CO2浓度和CO2捕获效率限定的温度范围内在低温热交换器表面上使CO2结霜。然后二氧化碳被吸收并以液态回收。这种通过反升华捕获CO2的过程称为AnSU®。烟气中的CO2结霜温度远低于水的三相点，因此在CO2捕集之前，除去烟气中所含的水以获得高纯度的CO2。本文介绍了一个概述的反升华过程，并简要回顾了测试台，已成立的实验室和工业现场验证和优化的反升华过程可以追溯到2003年建造的第一个。以某燃煤电厂为例，分析了反升华法捕集CO2的能耗和成本损失。对水泥厂采用富氧燃烧法捕集CO2进行了技术经济分析和比较。这两个过程可以被视为低温选择，详细的比较可以让我们深入了解能量损失发生在哪里，以及根据水泥行业的规格，哪种捕获过程可以最适合。© 2012年化学工业协会和约翰威利父子有限公司
CO 2 capture by antisublimation consists in cooling the flue gases down to the freezing temperature of CO 2 and frosting CO 2 on a low temperature heat exchanger surface at a temperature range defined by the CO 2 concentration in the flue gases and the CO 2 capture efficiency. CO 2 is then defrosted and recovered in a liquid state. This CO 2 capture process by antisublimation is called AnSU®. The CO 2 frosting temperature in flue gases is much lower than the triple point of water and therefore before CO 2 capture, water contained in flue gases is removed to reach high purity CO 2 . This paper presents an overview of the antisublimation process and a brief review of test benches that have been set up in laboratory and on industry sites for validation and optimization of the antisublimation process dating back to the first one constructed in 2003. Energy consumption and cost penalty of CO 2 capture by antisublimation are evaluated for a coal‐fired power plant. A technical and economic analysis has been made and compared to CO 2 capture by oxycombustion for a cement plant. Those two processes can be seen as cryogenics options and the detailed comparison gives insight into where energy losses take place and which capture process could be most adapted depending on specifications of the cement industry. © 2012 Society of Chemical Industry and John Wiley & Sons, Ltd