Biogas upgrading – Review of commercial technologies - SGC
Biogas upgrading – Review of commercial technologies - SGC
Biogas upgrading – Review of commercial technologies - SGC
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<strong>SGC</strong> Rapport 2013:270<br />
The energy consumption to upgrade biogas with an organic physical scrubber is<br />
similar to that <strong>of</strong> a water scrubber and the same components (compressor, cooler<br />
and feed pump) are the main energy consumers. Compared to the water scrubber,<br />
the feed pump consumes less energy in an organic physical scrubber due to the<br />
lower flow rate. Just as for the water scrubber, the energy consumption will depend<br />
on the size <strong>of</strong> the unit, see Figure 29, but not on the methane concentration<br />
in the raw biogas.<br />
Electricity (kWh/Nm 3 )<br />
0,3<br />
0,25<br />
0,2<br />
0,15<br />
0,1<br />
0,05<br />
0<br />
0 500 1000 1500 2000<br />
Capacity (Nm3 /h raw biogas)<br />
Figure 29 Average electricity consumption in an organic physical scrubber.<br />
The availability is commonly guaranteed to be 96-98 % and the maintenance cost<br />
is annually around 2-3% <strong>of</strong> the investment cost. Agreements to take care <strong>of</strong> the<br />
maintenance costs can be signed with the manufacturer.<br />
Svenskt Gastekniskt Center AB, Malmö <strong>–</strong> www.sgc.se 49
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