Page 58 - Biomass Gasification, Pyrolysis And Torrefaction Practical Design and Theory
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Chapter | 2 Economic Issues of Biomass Energy Conversion 37
10 9 8
10
Capital cost, $US (1994) 10 7 6 Pressurized
Atmospheric
pressure
systems
10
systems
10 5
10 4
0.1 1 10 100
Feed input, daf t/h
FIGURE 2.1 TPC of gasification plant in 1994 dollars against fuel feed rate on clay ash free
basis. Source: Computed from Bridgwater (1995).
TABLE 2.3 Capital Cost (in 2001 dollar) of Gasifier Units Estimated by
Cieferno and Ma (2002) from Several Commercial Units
Specific Capital Specific Capital Cost
Gasifier Type Capacity (tPD) Cost ($1000/tPD) ($/GJ/h product gas)
Bubbling 170 960 13 45 21,600 54,900
fluidized bed
(biomass)
Circulating 740 910 24.5 28.4 33,000 48,000
fluidized bed
(biomass)
Entrained flow 2200 37.3 1400
(coal)
tPD—dry tons feed per day.
Bridgwater (1995) correlated the TPC of a biomass gasification plant
(fuel receiving end to clean gas delivery) with fuel input (F) as below:
0:64
TPC ðin 1994 US dollarsÞ 5 13ðFÞ for pressurized gasifier
0:7
5 2:9ðFÞ for atmospheric pressure gasifier
(2.3)
F is fuel input in tons/h.
