Abstract Although CO2 absorption processes have been widely studied in both laboratory and industrial scales, the viability of different relations for the estimation of mass transfer coefficients has not been studied for industrial units. In this paper, the accuracy of different various equations for the estimation of mass transfer coefficients were are evaluated and compared, on the basis of according to the results of an industrial CO2 absorption unit. Therefore, the relations proposed by Onda, Bravo and Billet-Schules were are selected. Also, in some parts of the column pall ring packing was is used. in these parts the Hanley mass transfer coefficients were also used. In addition, Hanley mass transfer coefficients are used for those parts of the column in which pall ring packing is used. Based on the results of rate-based modeling of the column, obtained results show that the Onda equations show have higher accuracy compared to the other mass transfer equations. The comparison was is carried out based on CO2 absorption capacity, temperature profile and rich solvent concentration. The average errors of Onda's mass transfer correlations and Billet & Schultes's liquid holdup correlations in estimating CO2 absorption (%), temperature of rich solvent's temperature, temperature of outlet water's temperature and loading of rich solvent's loading were are 1.153, 2.923, 6.99 and 1.163% respectively. Onda and Billet & Schultes correlations exhibited the most accurate results. Also additionally, liquid film discretization shows indicates that the reaction occurs almost rather instantaneously at liquid-vapor interface and diffusion is the controlling step in the absorption process.

中文翻译：

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用 MEA 模拟 CO2 吸收的不同传质和液体滞留相关性的比较研究

摘要 尽管 CO2 吸收过程已在实验室和工业规模上得到广泛研究，但尚未对工业单位研究用于估计传质系数的不同关系的可行性。本文根据某工业CO2吸收装置的结果，对各种不同的传质系数估算公式的准确性进行了评价和比较。因此，选择了 Onda、Bravo 和 Billet-Schules 提出的关系。此外，在色谱柱的某些部分使用了鲍尔环填料。在这些部件中，也使用了 Hanley 传质系数。此外，Hanley 传质系数用于塔中使用鲍尔环填料的部分。根据基于速率的柱建模结果，得到的结果表明，与其他传质方程相比，昂达方程显示出更高的精度。比较是基于 CO2 吸收能力、温度分布和富溶剂浓度进行的。Onda的传质相关性和Billet & Schultes的持液率相关性在估算CO2吸收(%)、富溶剂温度、出口水温和富溶剂负载量的平均误差分别为1.153、2.923、6.99和1.163%分别。Onda 和 Billet & Schultes 的相关性显示出最准确的结果。另外，