Rate-Based Process Modeling Study of CO2 Capture with Aqueous Monoethanolamine Solution
Rate-Based Process Modeling Study of CO2 Capture with Aqueous Monoethanolamine Solution
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DOI：
10.1021/ie900068k
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发表时间：
2009-09
影响因子：
4.2
通讯作者：
Ying Zhang;H. Chen;Chau‐Chyun Chen;J. Plaza;R. Dugas;G. Rochelle
中科院分区：
文献类型：
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作者：
Ying Zhang;H. Chen;Chau‐Chyun Chen;J. Plaza;R. Dugas;G. Rochelle
基于速率的过程建模技术已经成熟，并越来越多地被传统的平衡阶段建模方法所接受。[Taylor et al.化学。英语。程序。2003，99，28−39]最近，德克萨斯大学奥斯汀分校提供了用单乙醇胺水溶液捕获二氧化碳的全面中试工厂数据。中试工厂的数据涵盖了关键工艺变量，包括气流中的二氧化碳浓度、稀溶液中的二氧化碳含量、液气比和填料类型。在这项研究中，我们使用Aspen Plus的第二代基于速率的多级分离单元操作模型Aspen RateSep来模拟中试工厂的操作。在简要回顾了基于速率的模型、MEA溶液吸收二氧化碳的热力学和动力学模型以及传输性质模型之后，我们显示了基于速率的模型预测与综合中试数据的良好匹配，并验证了基于速率的模型相对于传统模型的优越性。
Rate-based process modeling technology has matured and is increasingly gaining acceptance over traditional equilibrium-stage modeling approaches. [Taylor et al. Chem. Eng. Prog. 2003, 99, 28−39] Recently comprehensive pilot plant data for carbon dioxide (CO2) capture with aqueous monoethanolamine (MEA) solution have become available from the University of Texas at Austin. The pilot plant data cover key process variables including CO2 concentration in the gas stream, CO2 loading in lean MEA solution, liquid to gas ratio, and packing type. In this study, we model the pilot plant operation with Aspen RateSep, a second generation rate-based multistage separation unit operation model in Aspen Plus. After a brief review on rate-based modeling, thermodynamic and kinetic models for CO2 absorption with the MEA solution, and transport property models, we show excellent match of the rate-based model predictions against the comprehensive pilot plant data and we validate the superiority of the rate-based models over t...