Biomedical Engineering Reference
In-Depth Information
Fuel gas:CH 4
CH 4
H 2 +CH 4
Water
Furnace
S3
H 2
6000°C 350 bar
S1
1 bar 25°C
25°C 350
bar
Reactor
CO 2
Cooler
HE
S2
1 bar
25°C
100°C 350
bar
H 2 +CH 4 +CO+CO 2 +H 2 O
Pump
Product water
R ecycled water
Feedstock
FIGURE 9.15 A gas liquid separation scheme for an SCW gasifier plant. HE, waste heat
recovery heat exchanger; S1, hydrogen separator; S2, carbon dioxide separator; S3, pressure
swing adsorber for separation of methane from hydrogen.
Solubility of Some Gases in Water at 25 C and Different
Temperature
TABLE 9.6
Pressure (Bar)
60
90
120
140
200
300
400
600
1000
CH 4 (cm 3 /g H 2 O)
1.8
2.34
2.9
3.3
H 2 (cm 3 /g H 2 O)
1.0
1.5
2.0
2.1
3.0
4.5
7.9
9.0
15
CO 2 (cm 3 /g H 2 O)
27
32
33
39
Source: Collected from experimental and calculated values of Feng et al. (2004b).
results are shown in Table 9.6 to illustrate the process. It is apparent that at
25 C the solubility of CO 2 is orders of magnitude higher than that of meth-
ane and hydrogen. The solubility of methane and hydrogen is similar at
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