More Biogas, located in Kalmar, Sweden, is a perfect example of the Circular Economy at work. Here over 30,000 tons of food waste, manure and agricultural residues from local farms are processed in their Anaerobic Digestion Plant each year.
The biogas plant is partly owned by the farmers who provide the agricultural feedstocks, and in return receive a rich digestate fertilizer to spread on their land.
The plant also produces up to 700Nm3/h of biogas which is upgraded to biomethane by a Puregas CA30 plant. The biomethane is subsequently compressed to 250barg to produce bioCNG.
The Puregas CA process recovers over 99.9% of the biomethane present in the raw biogas by separating the CO2 from the biogas through a process of chemical absorption. The selective organic solvents used in this process are so efficient that the product gas can contain over 99% biomethane. The biomethane or Renewable Natural Gas can be directly injected in to the gas grid, compressed to produce bioCNG or liquefied for bioLNG. It’s also possible to capture the CO2 from the plant and use this for commercial purposes. All plants are fully factory tested and third party inspected prior to shipment.
At More Biogas, most of the bioCNG is fed into composite trailers, each capable of storing 5,000Nm3 of biomethane, which are then transported to the local municipality bus depot to fuel their fleet of CNG busses.
The remainder of the bioCNG is stored locally and sold to the general public to fuel their Natural Gas Vehicles (NGV).
The plant produces enough bioCNG to displace over 3 million litres of diesel each year.
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Wärtsilä Biogas Solutions deliver highly efficient and extremely reliable biogas upgrading solutions.
With over 20 years of experience Wärtsilä Biogas Solutions supplies Biogas Upgrading Plants, bioCNG compressor stations and fuelling infrastructure. Puregas provides fully integrated solutions for biogas upgrading and have over 30 plants already operating.