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CO2 adsorption in a zeolite-based bench scale moving bed prototype: Experimental and theoretical investigation
Chemical Engineering Research and Design ( IF 3.9 ) Pub Date : 2021-05-17 , DOI: 10.1016/j.cherd.2021.05.006
Guilherme Cancelier dos Santos , George Clarke Bleyer , Lauber S. Martins , Natan Padoin , Elise Sommer Watzko , Thiago Fernandes de Aquino , Lídia Baraky Vasconcelos

Oil and coal reserves are still abundant and are part of a strategy to assure safe energy in almost every energy matrix around the world. Nevertheless, it is important to look for solutions that reduce the negative impacts of burning fossil fuels. CO2 capture in thermoelectric plants is a significant alternative in favor of this technological need. In the present study, CO2 adsorption in a zeolite-based bench scale prototype was evaluated numerically and experimentally considering the constructive and operational parameters of the bench unit. The configuration of the plates and the zeolites flow pattern were studied considering the residence time (RT) and CO2 capture capacity. A residence time of 13 s was reached experimentally with simple modifications on the number of plates of the unit. The efficacy of the CO2 removal was high, reaching 95.5% for a RT of 10.65 s and 99.33% for a RT of 15 s. The numerical results showed good agreement with the experimental data with a maximum error of 10% for the residence time, and 6% for the adsorption capacity. The herein study is a contribution to make the CO2 capture technology viable by Moving Bed Temperature Swing Adsorption (MTBSA) adsorption column with zeolite and indicating optimum operational parameters leading to higher efficiency levels.



中文翻译:

沸石基台式移动床原型中的CO 2吸附:实验和理论研究

石油和煤炭储备仍然很丰富,并且是确保全球几乎所有能源矩阵中的安全能源战略的一部分。尽管如此,寻找减少燃烧化石燃料的负面影响的解决方案仍然很重要。为了满足该技术需求,热电厂中的CO 2捕集是一种重要的选择。在本研究中,考虑到台式装置的构造和运行参数,对基于沸石的台式秤原型中的CO 2吸附进行了数值和实验评估。考虑到停留时间(RT)和CO 2捕获能力,研究了板的构造和沸石的流动模式。停留时间为13 通过简单地修改单元板的数量,可以通过实验达到s。去除CO 2的效率很高,在10.65  s的RT下达到95.5%,在15  s的RT下达到99.33%。数值结果与实验数据吻合良好,最大停留时间误差为10%,吸附容量最大误差为6%。本文的研究是使具有沸石的移动床变温吸附(MTBSA)吸附柱使CO 2捕集技术可行的一项贡献,并指出了导致更高效率水平的最佳操作参数。

更新日期:2021-05-26
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