Solubility of nitrous oxide in alkanolamine aqueous solutions

Journal Article · Sat Apr 01 04:00:00 EST 2000 · Journal of Chemical and Engineering Data

DOI:https://doi.org/10.1021/je990253b· OSTI ID:20020908

Tsai, T C; Ko, J J; Wang, H M; Lin, C Y; Li, M H

The solubility of nitrous oxide (N{sub 2}O) in alkanolamine aqueous solutions has been measured at (30, 35, and 40) C. The systems studied are monoethanolamine, diethanolamine, diisopropanolamine, triethanolamine, and 2-amino-2-methyl-1-propanol aqueous solutions. The concentration of amine for monoethanolamine ranges from (1 to 6) kmol/m{sup 3} and for other amines from (0.5 to 3) kmol/m{sup 3}. The accuracy of the measurement is estimated to be {+-}2%. A semiempirical model of the excess Henry's constant proposed by Wang et al. (1992) was used to correlate the solubility of N{sub 2}O in amine solutions. The parameters of the correlation were determined from the measured solubility data and the available data in the open literature. For a wide temperature range from (15 to 75) C, the obtained correlation has been shown to represent reasonably the solubility of N{sub 2}O in six amine aqueous solutions: MEA, DEA, DIPA, TEA, MDEA, and AMP. For the purpose of process design, the obtained correlations are, in general, satisfactory for estimating the solubility of N{sub 2}O in amine solutions, which in turn can be used to estimate the correct free-gas solubility of CO{sub 2} in amines.

• Research Organization: Chung Yuan Christian Univ., Chung Li (TW)
• OSTI ID: 20020908
• Journal Information: Journal of Chemical and Engineering Data, Journal Name: Journal of Chemical and Engineering Data Journal Issue: 2 Vol. 45; ISSN JCEAAX; ISSN 0021-9568
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
AMINES
CARBON DIOXIDE
NATURAL GAS
NITROUS OXIDE
SCRUBBING
SOLUBILITY
SOLVENT PROPERTIES