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How to express the adsorbed CO_2 with the Gibbs' thermodynamic graphical method: A preliminary study

机译：用吉布斯热力学图解法表达吸附的CO_2的初步研究

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摘要

Adsorption carbon capture technology has been considered as one of the most promising technologies to control the CO_2 level in the atmosphere. From the view of thermodynamics, the adsorbed-bulk gas phase equilibrium system should be well developed for accurately elaborating the mechanism of CO_2 adsorption. Since thermodynamic properties of the adsorbed CO_2 plays a significant role in the cyclic analysis of carbon capture technology, in this work, the Gibbs' thermodynamic graphical method was extended to the expression of thermodynamic properties of the adsorbed CO_2 as a specific case study. The 3-dimensional (3D) thermodynamic surface was established to determine the thermodynamic properties of the adsorbed CO_2 in the thermodynamic equilibrium state. The temperature and pressure were treated as the individual variables to calculate the thermodynamic properties of the adsorbed CO_2, including the adsorption capacity, chemical potential, entropy, and internal energy. Finally, the internal energy-adsorption capacity-entropy 3D thermodynamic surface of the adsorbed CO_2 was obtained by the Gibbs' thermodynamic graphical method. The thermodynamic surface established in this work will contribute and/or accelerate the research of the actual adsorption thermodynamic cycle and new findings are encouraged to be updated to our database to enhance the development on thermodynamic characteristics of the adsorption technology.
机译：吸附碳捕获技术已被认为是控制大气中CO_2含量的最有前途的技术之一。从热力学的角度出发，应大力发展吸附本体气相平衡体系，以准确阐明CO_2的吸附机理。由于吸附的CO_2的热力学性质在碳捕获技术的循环分析中起着重要作用，因此在这项工作中，吉布斯的热力学图形方法扩展到了吸附的CO_2的热力学性质的表达，作为一个具体案例研究。建立3维（3D）热力学表面以确定在热力学平衡状态下吸附的CO_2的热力学性质。将温度和压力作为单独变量来计算所吸附的CO_2的热力学性质，包括吸附容量，化学势，熵和内能。最后，通过吉布斯的热力学图解法获得了被吸附的CO_2的内部能量吸附能力熵3D热力学表面。在这项工作中建立的热力学表面将有助于和/或加速对实际吸附热力学循环的研究，并鼓励将新发现更新到我们的数据库中，以增强吸附技术的热力学特性的发展。

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  • 来源
    《Energy》 |2020年第15期|116753.1-116753.10|共10页
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  • 作者单位

    Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University) Ministry of Education of China Tianjin 300350 China International Cooperation Research Centre of Carbon Capture in Ultra-low Energy-consumption Tianjin 300350 China;

    Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University) Ministry of Education of China Tianjin 300350 China;

    Department of Chemical and Biological Engineering Korea University 145 Anam-ro Seongbuk-gu Seoul 02831 Republic of Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    CO_2 adsorption; Thermodynamic properties; Graphical method; Adsorbed phase;

    机译：CO_2吸附;热力学性质;图形方法;吸附相;

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