1210
J. Chem. Eng. Data 1996, 41, 1210
Comments Comments on the Paper “Hydrocarbon Gas Solubility in Sweetening Solutions: Methane and Ethane in Aqueous Monoethanolamine and Diethanolamine” (Lawson, J. D.; Garst, A. W. J. Chem. Eng. Data 1976, 21, 30-32) A. E. Mather*,† and K. N. Marsh‡ Department of Chemical Engineering, University of Alberta, Edmonton, Alberta T6G 2G6, Canada, and Thermodynamics Research Center, Texas A&M University, College Station, Texas 77843-3111 This paper has been widely quoted in the literature for many years and errors in Tables 1 and 2 have only come to light recently when a copy of the original report came into the hands of A. E. Mather. The corrected Tables 1
and 2 follow. Many researchers have suspected that some of the values in Tables 1 and 2 were wrong. Asterisks indicate corrected values.
Table 1. Solubility of Methane in MEA and DEA Solutions liquid-phase amine solution vapor-phase concn of methane, wt % amine partial press. of lb-mol; amine type methane, psi methane/105 lb soln
Table 2. Solubility of Ethane in MEA and DEA Solutions liquid-phase amine solution vapor-phase concn of ethane, wt % amine partial press. of lb-mol; amine type ethane, psi ethane/105 lb of soln
† ‡
5
DEA
25
DEA
40
DEA
15 40
MEA MEA
5
DEA
25
DEA
40
DEA
15
MEA
40
MEA
25
DEA
40
DEA
40
MEA
25
DEA
40
DEA
40
MEA
100 °F 512 963 510 968 526 933 954 500 954
3.48 6.46 3.20 6.00 3.24 5.52 6.55 3.48 6.26
150 °F 516 978 511 982 518 937 498 993 500 954
2.77 5.20 2.89 5.40 3.06 5.38 3.07 5.80 3.33 6.20
200 °F 516 920 530 963 490 974
2.58 5.02 3.04 5.74 3.66* 6.65*
250 °F 501 920 498 908 508 950
2.97 5.82 3.56 6.30 4.19 7.85
5
DEA
25
DEA
15
MEA
5
DEA
25
DEA
15
MEA
40
MEA
100 °F 504* 820* 480 868 491 868
3.56* 4.67* 3.83 5.02 3.90 5.04
150 °F 501 957 498 972 501 955 503 932
2.65 3.94 3.14 4.78 3.11 4.98 4.25 6.38
Received for review June 25, 1996. Accepted June 25, 1996.
JE9603786
University of Alberta. Texas A&M University.
S0021-9568(96)00378-0 CCC: $12.00
© 1996 American Chemical Society
