Environmental Engineering Reference
In-Depth Information
Specific biogas upgrading costs for Genosorb
®
scrubbers based
on price indications and warranty values according to [14] (Copyright:
Fraunhofer IWES, 2012).
15.19
15.20
Specific biogas upgrading costs for amine scrubbers based on
price indications and warranty values according to [17] (Copyright:
Fraunhofer IWES, 2012).
methane recovery rates of 99.9% and product gas pressures of 1.15 bar are
assumed.
Figure 15.21 shows specific upgrading costs for raw gas upgrading
capacities in the range 250-750m
n
3
/h for a membrane separation system.
Precision desulphurization has been considered. Calculations are based on
specific electricity demands of 0.35 kWh
el
/m
n
3
(65% CH
4
in raw gas flow)
and 0.40 kWh
el
/m
n
3
(55% CH
4
in raw gas flow), both values related to
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