WP1 Gas Conditioning and grid operation
The existing natural gas system has the potential to provide energy storage and international market integration for renewable gases from biomass, waste, wind and solar energy. However, there is a significant difference in technical specification of natural gas (primarily CH4) and the gases produced from renewable energy (biogas (60% CH4), syngas (CO, H2 and CH4) and hydrogen (H2)). A direct conversion of renewable based gases to cope with existing standards for natural gas is possible and will solve this integration issue. However, conditioning to natural gas standards might not always be the most cost-efficient way to integrate renewable gases in the energy system. Syngas is a flexible gas that can be converted to a number of gaseous or liquid fuels (methane, DME, methanol, syntetic diesel) or used as a feedstock for production of materials and fertilizers (plastic/polymer, ammonia etc.). Local gas-grids with synthesis gas supporting industries with green energy for industrial production of fuels, materials and green fertilizers might enhance the competitiveness of new green industries . Different renewable gases may assist in integrating wind power by providing flexible electricity demand related to e.g. production of hydrogen with electrolysis as well as conditioning (upgrading/ methanation and pressurising) of biogas and syngas.
This WP analyse existing and emerging technologies for biogas upgrading and syngas methanation. Focus is on development and characterisation of gas supply and emerging gas technologies and sources, seen in a system context. New and unconventional sources such as syngas are investigated, especially in relation to how these can best be conditioned for the existing gas infrastructure, addressing challenges as cost efficient methanation and upgrading to natural gas quality.
The WP has four tasks:
- 1.1: Technical and economical comparison of different technologies for production and conditioning of RE gases for the natural gas grid.
- 1.2: Analyses and laboratory tests of upgrading and methanation technologies. This will include physical, thermal/chemical and biological processes.
- 1.3: Technical and economical comparison of different options for design and operation of natural gas grids.
- 1.4: Analysis of trade-offs of adjusting grid design and operation versus upgrading and pressurising RE gases.
- PhD N.B.Rasmussen
- DGC – Danish Gas Technology Centre
- DTU Management Engineering
- Aarhus University
- Delft University of Technology