Alkanolmonoamines as Activators for the Hot Potash Process for CO2 Capture

被引:4
作者
Ahmad, Mamshad [1 ]
Masohan, Asha [2 ]
Sawhney, S. S. [1 ]
机构
[1] Uttaranchal Coll Sci & Technol, Dept Chem, Dehra Dun 248001, Uttar Pradesh, India
[2] Indian Inst Petr, Dept Adv Gas Separat, Dehra Dun 248005, Uttar Pradesh, India
关键词
Alkanolamines; Activator; Hot potash process; Carbon dioxide; Absorption; Amine activator; CARBON-DIOXIDE ABSORPTION; AMINES; PIPERAZINE;
D O I
10.14233/ajchem.2014.15687
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The present study is based on use of activators in the hot potash process. Glycine is commonly used as an activator in the Giammarco Vetrocoke process. This paper presents a systematic study on use of alkanolmonoamines as possible alternate activators. These alkanolmonoamines contain only one amino group that may be unsubstituted/ substituted (-NH2, -NRH or -NR2) and thus the acidity of these compounds is one that arises from the only amino group that is there in the molecule. Out of these, monoethanolamine, diethanolamine and triethanolamine are previously reported as activators in the literature. This paper reports the experimental studies on such alkanolmonoamines including the new alkanolmonoamine structures also. The proposed amines as activators have shown highly promising results. A 632-700 % increase in rate of absorption, 493 % increase in capacity of absorption of K2CO3 and 313-400 % increase in the CO2 regenerated has been observed for some of these amines. In case of glycine this increase is 134, 214 and 161 %, respectively. A combination of these with diethanolamine increases the rate of absorption considerably. This study is directed towards finding a non-degradable, cheaper, environmentally friendly and more efficient alternative to glycine as activator.
引用
收藏
页码:975 / 980
页数:6
相关论文
共 30 条
[1]  
[Anonymous], 1964, [No title captured], Patent No. 3144301
[2]  
[Anonymous], 2007, [No title captured], Patent No. 20070044658
[3]  
[Anonymous], 1955, [No title captured], Patent No. 2718454
[4]  
Benson H., 1956, CHEM ENG PROG, V52, P433
[5]  
BENSON HE, 1954, CHEM ENG PROG, V50, P356
[6]   Kinetics of carbon dioxide absorption into aqueous potassium carbonate and piperazine [J].
Cullinane, JT ;
Rochelle, GT .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2006, 45 (08) :2531-2545
[7]   Carbon dioxide absorption with aqueous potassium carbonate promoted by piperazine [J].
Cullinane, JT ;
Rochelle, GT .
CHEMICAL ENGINEERING SCIENCE, 2004, 59 (17) :3619-3630
[8]   Prediction of the pKa values of amines using ab initio methods and free-energy perturbations [J].
da Silva, EF ;
Svendsen, HF .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2003, 42 (19) :4414-4421
[9]  
Danckwerts V.P., 1967, CHEM ENG SCI, V22, P925
[10]   Dissociation Constant of Protonated Tris(hydroxymethyl)aminomethane in N-Methylpropionamide and Related Thermodynamic Quantities from 10 to 55 degrees C [J].
Etz, Edgar S. ;
Robinson, R. A. ;
Bates, Roger G. .
JOURNAL OF SOLUTION CHEMISTRY, 1973, 2 (04) :405-415