Experimental analyses of mass transfer and heat transfer of post-combustion CO2 absorption using hybrid solvent MEA-MeOH in an absorber

被引:74
作者
Fu, Kaiyun [1 ]
Rongwong, Wichitpan [1 ]
Liang, Zhiwu [1 ]
Na, Yanqing [1 ]
Idem, Raphael [1 ]
Tontiwachwuthikul, Paitoon [1 ]
机构
[1] Hunan Univ, Coll Chem & Chem Engn, Joint Int Ctr Capture & Storage iCCS CO2, Prov Key Lab Cost Effect Utilizat Fossil Fuel Aim, Changsha 410082, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
CO2; absorption; Hybrid solvents; Monoethanolamine; Methanol; Mass transfer; Structured packing; CARBON-DIOXIDE; TRANSFER PERFORMANCE; REACTION-KINETICS; AQUEOUS AMMONIA; DIETHYLENETRIAMINE DETA; TRANSFER COEFFICIENT; CAPTURE TECHNOLOGY; METHANOL; ETHANOL; 4-DIETHYLAMINO-2-BUTANOL;
D O I
10.1016/j.cej.2014.08.064
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The performance of CO2 absorption into a hybrid solvent such as monoethanolamine (MEA) in methanol (MeOH) was experimentally investigated in a lab-scale absorber packed with Sulzer DX-type structured packing, and compared with that of aqueous MEA solution. The experiments were performed at various key operating conditions over a MEA concentration range of 2.5-5.0 kmol/m(3), a CO2 lean loading range of 0-0.373 mol/mol, a liquid flow rate range of 2.92-16.09 m(3)/m(2) h, an inert gas flow rate range of 24.37-63.54 kmol/m(2) h, a CO2 partial pressure range of 6.7-13.8 kPa, and an inlet liquid temperature of 10 degrees C. The absorption performance was presented in terms of the overall gas phase mass transfer coefficient (K(G)a(V)), CO2 concentration and system temperature profiles along the height of the absorber, and the system temperatures at the bottom and the top of the absorber, T-bot and T-top, respectively. It was found that the K(G)a(V), for MEA-MeOH was higher than that of MEA-H2O. In addition, the experimental results showed that key operating parameters such as MEA concentration, CO2 loading, liquid flow rate and inert gas flow rate have large effect on the performance of CO2 absorption into the MEA-MeOH. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:11 / 19
页数:9
相关论文
共 39 条
[1]   Kinetic study of reactive absorption of same primary amines with carbon dioxide in ethanol solution [J].
Ali, SH ;
Merchant, SQ ;
Fahim, MA .
SEPARATION AND PURIFICATION TECHNOLOGY, 2000, 18 (03) :163-175
[2]   Simulation of CO2 capture using MEA scrubbing:: a flowsheet decomposition method [J].
Alie, C ;
Backham, L ;
Croiset, E ;
Douglas, PL .
ENERGY CONVERSION AND MANAGEMENT, 2005, 46 (03) :475-487
[3]   Behavior of the mass-transfer coefficient of structured packings in CO2 absorbers with chemical reactions [J].
Aroonwilas, A ;
Veawab, A ;
Tontiwachwuthikul, P .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1999, 38 (05) :2044-2050
[4]   Analysis and Status of Post-Combustion Carbon Dioxide Capture Technologies [J].
Bhown, Abhoyjit S. ;
Freeman, Brice C. .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2011, 45 (20) :8624-8632
[5]   KINETICS OF CARBAMATE FORMATION AND BREAKDOWN [J].
CAPLOW, M .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1968, 90 (24) :6795-&
[6]  
Chemists A.of O.A., 1975, OFFICIAL METHODS ANA
[7]   REACTION OF CO2 WITH ETHANOLAMINES [J].
DANCKWERTS, PV .
CHEMICAL ENGINEERING SCIENCE, 1979, 34 (04) :443-446
[8]   Chilled ammonia process for CO2 capture [J].
Darde, Victor ;
Thomsen, Kaj ;
van Well, Willy J. M. ;
Stenby, Erling H. .
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, 2010, 4 (02) :131-136
[9]   Experimental study on mass transfer and prediction using artificial neural network for CO2 absorption into aqueous DETA [J].
Fu, Kaiyun ;
Chen, Guangying ;
Sema, Teerawat ;
Zhang, Xu ;
Liang, Zhiwu ;
Idem, Raphael ;
Tontiwachwuthikul, Paitoon .
CHEMICAL ENGINEERING SCIENCE, 2013, 100 :195-202
[10]   Investigation of Mass-Transfer Performance for CO2 Absorption into Diethylenetriamine (DETA) in a Randomly Packed Column [J].
Fu, Kaiyun ;
Sema, Teerawat ;
Liang, Zhiwu ;
Liu, Helei ;
Na, Yanqing ;
Shi, Huancong ;
Idem, Raphael ;
Tontiwachwuthikul, Paitoon .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2012, 51 (37) :12058-12064