Comprehensive mass transfer and reaction kinetics studies of a novel reactive 4-diethylamino-2-butanol solvent for capturing CO2

被引：27

作者：

Sema, Teerawat ^{[1
,2
]}

Naami, Abdulaziz ^{[2
]}

Fu, Kaiyun ^{[1
]}

Chen, Guangying ^{[1
]}

Liang, Zhiwu ^{[1
,2
]}

Idem, Raphael ^{[1
,2
]}

Tontiwachwuthikul, Paitoon ^{[1
,2
]}

机构：

[1] Hunan Univ, Coll Chem & Chem Engn, Joint Int Ctr Capture & Storage iCCS CO2, Changsha 410082, Hunan, Peoples R China

[2] Univ Regina, Fac Engn & Appl Sci, Int Test Ctr Capture ITC CO2, Regina, SK S4S 0A2, Canada

来源：

CHEMICAL ENGINEERING SCIENCE | 2013年 / 100卷

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会; 中国国家自然科学基金;

关键词：

Carbon dioxide; Absorption; Mass transfer; Kinetics; Separation; Packed column; CARBON-DIOXIDE ABSORPTION; AQUEOUS-SOLUTIONS; MONOETHANOLAMINE; METHYLDIETHANOLAMINE; APPARATUS; MDEA;

D O I：

10.1016/j.ces.2012.12.030

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In the present work, the reaction kinetics and mass transfer performance of CO2 absorption into aqueous solutions of DEAB were comprehensively studied. The reaction kinetics was investigated using a laminar jet absorber in terms of a reaction rate constant (k(DEAB)) and enhancement factor (E). The mass transfer performance was evaluated experimentally in a lab-scale absorber packed with high efficiency DX structured packing in terms of overall mass transfer coefficient (K(G)a(v)). It was found that kDEAB was successfully extracted and can be expressed as: k(DEAB) = (4.01 x 10(13))exp(-7527.7/T). Regarding to the reaction rate constant, the reaction kinetics of DEAB can be ranked as PZ >> MEA >> not less than DEAB similar to AMP similar to DEA > MDEA. Also, the predicted CO2 absorption rates obtained from the developed reaction rate/kinetics model are fit favorably with the experimental results with an absolute average deviation (AAD) of 6.5%. For the mass transfer study, the K(G)a(v) can be ranked as: MEA > DEAB > MDEA, which is corresponding well with the reaction kinetics results. In addition, the predictive correlation for K(G)a(v) of DEAB has successfully been developed. The predicted results were found to fit reasonably well with the experimental results with an AAD of 14.6%. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：183 / 194

页数：12

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