Biomedical Engineering Reference
In-Depth Information
TABLE 8.6
Sample Performance of Some Commercial Gasifiers
Fixed Bed
(updraft)
Entrained
Flow
Reactor Type
BFB
CFB
Feedstock
Biomass
Biomass
MSW
Coal
H
2
5
26
7
20
23
24
CO
13
27
9
22
39
67
CO
2
12
40
11
16
24
4
H
2
O
,
18
10
14
Dry
3
CH
4
3
11
,
9
5
0.02
Higher
hydrocarbon
,
3
,
4
5
0
H
2
S
B
0
B
0
0.05
1
O
2
0.2
0
0
,
N
2
13
56
46
52
1
NH
3
0
0
0.04
Tars
0.11
1
Included in higher
hydrocarbon
0
,
,
H
2
/CO ratio
0.2
1.6
0.6
1.0
0.6
0.36
Heating value
(MJ/m
3
)
4
13
4
7.5
9.5
Throughput
(ton/day)
4.5
181
9
108
181
2155
Pressure (bar)
1
35
1
19
1
30
Temperature (
C)
650
950
800
1000
1400
Gasification
medium
O
2
/air/
steam
Air
O
2
O
2
/steam
Biomass includes corn stover, wood, and pulp sludge;
, unknown.
Source: Data compiled from Ciferno and Marano (2002).
expressed in terms of the fuel gasified, the volume of gas that is produced,
or the energy throughput.
mass of fuel gasified
hearth cross-sectional area
s m
2
Hearth load
ð
kg
=
Þ
5
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