Type | Initial Investment | Operating Cost | Management and Maintenance | Application |
Dry Desulfurization | Lower | Replacement cost of desulfurizer, medium | Frequent replacement of desulfurizer and potential corrosion of tower | Fine desulphurization is suitable for small gas flow and low concentration of hydrogen sulfide. |
Wet Desulfurization | Medium | Consumption of drugs is high. | Automatic control, Manual labor is needed to add the drugs | It is suitable for intake gas with large methane flow and high hydrogen sulfide concentration. Intake concentration above 20000ppm |
Biological Desulfurization | Medium | Cheapest, less than 2 cents for each biogas treatment. | Fully automated operation, simple maintenance. | Most suitable for medium-scale biogas desulfurization (200-2000 Nm³/h, initial concentration of hydrogen sulfide in 2000 - 10000 ppm) |