Hitachi Zosen Inova’s Biggest Gas Upgrading Plant to be Built in Dunaföldvár

The renewable gas technologies offered by Hitachi Zosen Inova (HZI) for producing energy from regenerative resources are in great demand. After a successful first half-year with several project orders for anaerobic digestion and upgrading plants, at the beginning of the second half the German subsidiary HZI BioMethan GmbH (HZIB) was awarded the contract for an amine scrubbing gas upgrading installation in Dunaföldvár, Hungary. With an inlet biogas capacity of 5,000 Nm³/h, it will replace the current largest reference of 2,000 Nm³/h in Germany as HZI’s biggest reference project featuring this gas upgrading process. The client for the project is Pannonia Bio Zrt, a company of the ClonBio Group. Commissioning is scheduled for 2022.

New Region, New Plant Set-up
The Dunaföldvár project will be the first gas upgrading facility by HZI in Hungary. Around 90 km south of Budapest, Pannonia Bio Zrt is Europe’s largest grain biorefinery for ethanol production and hosts Central Europe’s largest operating advanced biofuel production facility. Every year the refinery converts more than a million tonnes of grain into hundreds of thousands of tonnes of various protein feeds and protein concentrates, over 500 million litres of bioethanol, 15,000 tonnes of corn oil and 15,000 tonnes of organic fertilisers, as well as other products.

“Our talented staff completed our advanced biogas facility and brought it online during the COVID-19 pandemic, and we are now ready to take this unique asset to the next level with HZI. At ClonBio, we believe that advanced biomethane is the most practicable advanced biofuel available at scale in Europe, and we believe, because we are seeing it happen, that fermentation technologies like biogas and ethanol present almost unlimited opportunities for circular economy solutions that offer the largest just transition benefits. We are extremely proud that Pannonia Bio already supports well over 5,000 jobs in Hungary,” comments Mark Turley, CEO of ClonBio.


Starting in 2022 the biogas will be amine scrubbed to convert it into biomethane, a natural gas substitute, and fed into the local gas grid. This renewable energy source will then be available to transport and heating customers in Hungary and beyond who want to switch away from fossil natural gas.

New software has been designed to integrate the gas upgrading system in the fully automated production facility. Jens Becker, Managing Director at HZIB, underscores this step into full automation: “It allows the installation to be controlled completely via the production facility’s control centre. This creates interesting possibilities for other refineries.”

Future Perspectives
Beyond this, ClonBio plans to maximise material flow recycling. In the upgrading process, the methane contained in the biogas will be separated from other components, especially carbon dioxide (CO2). For this reason, in the future sustainable use of CO2 will be another target for the Dunaföldvár facility. Thanks to a comprehensive renewable gas portfolio and deep know-how in interfaces, HZI can supply an integration solution to support this expansion.

Source: Hitachi Zosen Inova

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