The DMX™ process: An original solution for lowering the cost of post-combustion carbon capture
The DMX™ process: An original solution for lowering the cost of post-combustion carbon capture
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DOI：
10.1016/j.egypro.2011.01.119
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
L. Raynal;P. Alix;P. Bouillon;A. Gomez;Marie le Febvre de Nailly;M. Jacquin;J. Kittel;Angella di Lella;P. Mougin;J. Trapy
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文献类型：
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作者：
L. Raynal;P. Alix;P. Bouillon;A. Gomez;Marie le Febvre de Nailly;M. Jacquin;J. Kittel;Angella di Lella;P. Mougin;J. Trapy
为了使碳捕获的部署成为可能，非常需要开发能源损失低且易于操作的原创解决方案。本文旨在介绍 IFP Energies nouvelles 开发的基于特殊溶剂的 DMX™ 工艺，其特点是在给定温度和 CO2 负载条件下形成两个不混溶相。从物理化学性质方面简要描述了分层的概念，讨论了其兴趣以及适当工艺开发所需的所有步骤。给出了相应的工艺流程并进行了技术经济分析。结果表明，再沸器负荷可低至 2.1 GJ/t CO2，这明显低于 30wt.% MEA 参考工艺的 3.7 GJ/t CO2。还讨论了再沸器的能耗不能作为与其他工艺进行比较时考虑的唯一参数，并给出了有关 DMX™ 工艺的一些进一步信息。特别讨论了操作问题。从这个意义上讲，显示了 DMX-1TM 溶剂在降解和腐蚀方面的性能。同样，我们特别关注液/液分离，这是 DMX™ 工艺的一个关键方面。
To make the deployment of carbon capture possible, it is highly needed to develop original solutions that induce low energy penalty and that are easy to operate. This paper aims at presenting the DMX™ process developed at IFP Energies nouvelles based on special solvents which are characterized by the formation of two immiscible phases for given temperature and CO2loading conditions. The concept of demixtion is briefly described in terms of physico-chemical properties, its interest and all required steps for appropriate process development are discussed. The corresponding process is presented and a technico-economic analysis is given. It is shown than one can reach a reboiler duty as low as 2.1 GJ/t CO2which is significantly lower than the 3.7 GJ/t CO2of the 30wt.% MEA reference process. It is also discussed that the energy consumption at reboiler cannot be the only parameter to consider for comparison with other processes and some further information about the DMX™ process are given. Operational issues are particularly discussed. In that sense, the performances of the DMX-1TMsolvent in terms of degradation and corrosion are shown. Similarly a particular focus is made on the liquid/liquid separation which is a key aspect of the DMX™ process.