Wärtsilä To Build BioLNG Plant
By DJ Slater09 October 2020
Wärtsilä has received a contract to supply and construct a plant for producing CO2-neutral liquid transport fuels. The Cologne, Germany plant, which will have a capacity of 100,000 tpy, will liquefy gas from the natural gas grid to produce carbon-neutral LNG.
Wärtsilä’s scope of supply includes the engineering, the civil works, installation and commissioning of the plant. The plant will include a gas treatment system based on Wärtsilä’s Puregas CA technology, a liquefaction unit utilizing Wärtsilä’s Semi-Dual Brayton technology, storage tanks, truck filling stations, and all necessary safety flare and auxiliary equipment. The plant is expected to be fully operational by autumn 2022.
The feedstock for bioLNG is based on biological waste material, such as liquid manure and food waste. The feedstock is fed to an anaerobic digestion reactor that produces biogas, which is then upgraded to biomethane and injected into the natural gas grid. Green gas certificates are issued along with the injected biomethane, which then permits operators at other locations, such as liquefaction plants producing bioLNG, to buy the certificates and use the biomethane.