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CO2 Capture by Temperature Swing Adsorption: Working Capacity As Affected by Temperature and CO2 Partial Pressure
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-02-13 , DOI: 10.1021/acs.iecr.9b04901 Federica Raganati 1 , Riccardo Chirone 1 , Paola Ammendola 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-02-13 , DOI: 10.1021/acs.iecr.9b04901 Federica Raganati 1 , Riccardo Chirone 1 , Paola Ammendola 1
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Even though the performances of CO2 adsorbent materials for temperature swing adsorption (TSA) are typically assessed based on the equilibrium adsorption capacity, the actual feasibility of a sorbent in real applications cannot be reliably inferred from only this parameter. Indeed, more than the maximum CO2 uptake achievable at equilibrium, it is necessary to know the real quantity of CO2 that can be captured in a complete adsorption/desorption cycle, namely, the difference between the quantity of CO2 adsorbed under adsorption and desorption conditions, which is defined as the CO2 working capacity. In this work, dynamic breakthrough and regeneration tests have been performed using a fine porous activated carbon in a lab-scale TSA sound-assisted fluidized-bed rig to experimentally evaluate the CO2 working capacity. In particular, the standard sound-assisted fluidized-bed TSA cycle has been modified by applying the heating and purging (H&P) strategy to increase the cycle performances with regard to the CO2 purity and recovery. Then, the effect of adsorption/desorption temperatures (25–150 °C) and CO2 partial pressure (0.05–0.20 atm) has been evaluated.
中文翻译：
变温吸附法捕获CO 2：工作能力受温度和CO 2分压的影响
即使通常基于平衡吸附容量评估用于变温吸附（TSA）的CO 2吸附剂材料的性能，也不能仅从该参数可靠地推断出吸附剂在实际应用中的实际可行性。实际上，除了在平衡状态下可达到的最大CO 2吸收量外，有必要知道在完整的吸附/解吸循环中可以捕获的真实CO 2量，即在吸附下吸附的CO 2量与吸附量之间的差。解吸条件，定义为CO 2工作能力。在这项工作中，已经在实验室规模的TSA声辅助流化床装置中使用精细的多孔活性炭进行了动态突破和再生测试，以实验评估CO 2的工作能力。特别是，通过应用加热和吹扫（H＆P）策略对标准的声音辅助流化床TSA循环进行了修改，以提高有关CO 2纯度和回收率的循环性能。然后，评估了吸附/解吸温度（25–150°C）和CO 2分压（0.05–0.20 atm）的影响。
更新日期：2020-02-14
中文翻译：
变温吸附法捕获CO 2：工作能力受温度和CO 2分压的影响
即使通常基于平衡吸附容量评估用于变温吸附（TSA）的CO 2吸附剂材料的性能，也不能仅从该参数可靠地推断出吸附剂在实际应用中的实际可行性。实际上，除了在平衡状态下可达到的最大CO 2吸收量外，有必要知道在完整的吸附/解吸循环中可以捕获的真实CO 2量，即在吸附下吸附的CO 2量与吸附量之间的差。解吸条件，定义为CO 2工作能力。在这项工作中，已经在实验室规模的TSA声辅助流化床装置中使用精细的多孔活性炭进行了动态突破和再生测试，以实验评估CO 2的工作能力。特别是，通过应用加热和吹扫（H＆P）策略对标准的声音辅助流化床TSA循环进行了修改，以提高有关CO 2纯度和回收率的循环性能。然后，评估了吸附/解吸温度（25–150°C）和CO 2分压（0.05–0.20 atm）的影响。
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