Table 1
Comparison of H
2 S and CO
2 solvents
Formula
MEA
DEA
MDEA
DGA
DIPA
Sulfinol
Sulfolane
Molecular wt
61.1
105.1
119.2
105.14
133.19
120.17
Boiling point (
F)
338.5
515.1
477
405.5
479.7
545
Boiling range, 5–95 % (
F)
336.7–
232–
–
205–230
–
–
341.06
336.7
Freezing point (
F)
50.5
77.2
À9.3
9.5
107.6
81.7
Sp. Gr., 77
F 140
F
1.0113
1.0881
1.0418
1.0572
–
1.256
0.9844
(86
F)
(68
F)
1.022
0.981
(86
F)
1.0693
(129
F)
1.235
Pounds per gallon, 77
F
8.45
9.09
8.68
8.82
8.3
10.46
(86
F)
(86
F)
(86
F)
Abs. visc., cPs., 77
F 140
F
18.95
351.9
0.68 cSt (100
F)
40
870
12.1
(86
F)
(86
F)
5.03
(86
F)
0.28 cSt (212
F)
53.85
6.8
86
4.9
(129
F)
Flash point (
F)
200
295
265
260
255
350
Fire point (
F)
205
330
285
275
380
Sp. ht. Btu/lb (
F)
0.663
0.605
0.535
0.571
0.815
0.35
Critical temp. (
F)
646.3
827.8
662
765.6
–
982.4
Critical press. atm
44.1
32.3
37.22
–
52.2
Ht. of vaporiz. (Btu/lb)
357.94
267.00
219.14
202.72
225.7
Ht. of reaction – CO
2 Btu/lb (approx)
825
620
850
580
Ht. of reaction – H
2 S, Btu/lb (approx)
650
550
674
500
Normal w% soln
15–25
25–35
50–60
50–70
Varies
MEA
= HOC
2 H
4 NH
2
DEA
= (HOC
2 H
4 )
2 NH
DGA
= HOCH
2 CH
2 OCH
2 C
2 H
4 NH
2
DIPA
= (HOC
3 H
6 )
2 NH
Sulfolane
= (CH
2 )
4 SO
2
MDEA
= (HOC
2 H
4 )
2 NCH
3
504
D.S.J. Jones and S.A. Treese
Comparison of H
2 S and CO
2 solvents
Formula
MEA
DEA
MDEA
DGA
DIPA
Sulfinol
Sulfolane
Molecular wt
61.1
105.1
119.2
105.14
133.19
120.17
Boiling point (
F)
338.5
515.1
477
405.5
479.7
545
Boiling range, 5–95 % (
F)
336.7–
232–
–
205–230
–
–
341.06
336.7
Freezing point (
F)
50.5
77.2
À9.3
9.5
107.6
81.7
Sp. Gr., 77
F 140
F
1.0113
1.0881
1.0418
1.0572
–
1.256
0.9844
(86
F)
(68
F)
1.022
0.981
(86
F)
1.0693
(129
F)
1.235
Pounds per gallon, 77
F
8.45
9.09
8.68
8.82
8.3
10.46
(86
F)
(86
F)
(86
F)
Abs. visc., cPs., 77
F 140
F
18.95
351.9
0.68 cSt (100
F)
40
870
12.1
(86
F)
(86
F)
5.03
(86
F)
0.28 cSt (212
F)
53.85
6.8
86
4.9
(129
F)
Flash point (
F)
200
295
265
260
255
350
Fire point (
F)
205
330
285
275
380
Sp. ht. Btu/lb (
F)
0.663
0.605
0.535
0.571
0.815
0.35
Critical temp. (
F)
646.3
827.8
662
765.6
–
982.4
Critical press. atm
44.1
32.3
37.22
–
52.2
Ht. of vaporiz. (Btu/lb)
357.94
267.00
219.14
202.72
225.7
Ht. of reaction – CO
2 Btu/lb (approx)
825
620
850
580
Ht. of reaction – H
2 S, Btu/lb (approx)
650
550
674
500
Normal w% soln
15–25
25–35
50–60
50–70
Varies
MEA
= HOC
2 H
4 NH
2
DEA
= (HOC
2 H
4 )
2 NH
DGA
= HOCH
2 CH
2 OCH
2 C
2 H
4 NH
2
DIPA
= (HOC
3 H
6 )
2 NH
Sulfolane
= (CH
2 )
4 SO
2
MDEA
= (HOC
2 H
4 )
2 NCH
3
504
D.S.J. Jones and S.A. Treese