Image credit: Wärtsilä

Technology group Wärtsilä will supply a biogas liquefaction plant to Norway-based Biokraft, a subsidiary of the Scandinavian Biogas Group.

The plant with a capacity of 25 tons per day will extend an existing bioLNG production plant at Skogn in Norway, also supplied by Wärtsilä, to a combined total of 50 tons per day making it the largest facility of its kind in the world, according to Wärtsilä.

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The market for liquefied biogas, or bioLNG, continues to expand along with the increase in global efforts to restrict the use of fossil fuels.

BioLNG is a sustainable version of liquefied natural gas (LNG), with almost the exact same chemical makeup. According to British company Flogasg, BioLNG is produced during the anaerobic digestion process, which breaks down organic matter (such as food or animal waste) in an oxygen-free tank to produce methane-rich biogas. This makes it a renewable fuel – which means it produces far fewer carbon emissions and pollutants.

BioLNG has great potential for decarbonising the transport and marine sectors. For example, the energy density of BioLNG allows trucks to travel longer distances, better suiting the needs of transport operators. Due to the use of industrial organic waste as a resource, the CO2 emissions will be much lower than that of traditional fuels.

“Wärtsilä’s latest mixed refrigerant – MR – technology used in our liquefaction plants is extremely reliable, and offer the lowest operating costs for liquefying biogas,” said Maria Ortiz, sales manager, Biogas Solutions in Wärtsilä Gas Solutions.

The Wärtsilä equipment is scheduled for delivery in May 2022.