Biogas to Biomethane Methanation¤
Introduction¤
The methanation process from biogas to biomethane is a thermochemical operation allowing to increase the methane yield of the biogas. Biogas is a gaseous mixture of CH4 (60 vol%) and CO2 (40 vol%) produced by anaerobic digestion. For an unrestricted injection into the gas grid, the carbon dioxide need to be removed in order to obtain a methane concentration of 96 vol%. Conventionally, the carbon dioxide is separated from mixture by amine scrubbing or gas separation membrane. It is released into the environment as waste. Direct methanation consist in upgrading the biogas to biomethane without prior separation of CO2. The biogas enters a methanation reactor and the carbon dioxide reacts with hydrogen coming from an electrolyser fuelled by renewable excess electricity to produce biomethane.
ES Model Parameters¤
All the parameters concerning the Biomass to Biomethane are listed in the table below.
| entry_key | value | unit | sets | source_reference |
|---|---|---|---|---|
| CO2_C (layer) | -0.198 | kt/GWh | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" | |
| ELECTRICITY_MV (layer) | -0.0244 | - | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" | |
| H2_MP (layer) | -1.1912 | - | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" | |
| HEAT_HIGH_T (layer) | 0.189398 | - | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" | |
| SNG (layer) | 1 | - | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" | |
| c_inv | 781 | MCHF/GW | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" | |
| c_maint | 102 | MCHF/GW/yr | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" | |
| c_p | 0.86 | - | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" | |
| gwp_constr | 0 | kt/GWh | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" | |
| lifetime | 20 | y | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" | |
| ref_size | 0.002 | GW | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" | |
| trl | 7 | - | Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman, (2018): "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections" |
References¤
| Data Sources |
|---|
| Witte, Julia; Kunz, Andreas; Biollaz, Serge; Schildhauer, Tilman. (2018). "Direct Catalytic Methanation of Biogas - Part II: Techno-economic Process Assessment and Feasibility Reflections". Energy Conversion and Management. https://doi.org/10/gk9jm8 ⧉ |