March 7, 2023. EnviTec Biogas will implement its innovative gas upgrading technology as a single-stage process for the first time. The flagship project will see the Lower Saxony-based firm work with Ohra Energie to enhance the transition to sustainable transport.
The project encompasses a single-stage gas upgrading plant. The purified methane is then fed directly to the compressed natural gas (CNG) filling station. The remaining residual gas stream, consisting of methane and CO2, is used thermally. This additional heat can be deployed for heating the digester or used in dairy cattle operations.
The second step in this joint project plan is an integrated CNG compressor and storage unit, including a dual fuel pump, for a filling station located in the Frohndorf district of Sömmerda. Apart from cooler, fuel pump and card payment point, all of the components are housed in a single container.
The shared project was initiated following the completion of a feasibility study on the regional generation and use of biogas as a fuel. “We completed the groundwork back in September 2021 in Fröttstädt, and the project will now be completed with the implementation of a small-scale biogas upgrading plant featuring direct integration with a CNG/biogas filling station,” explained Volkmar Braune, Chief Technical Officer at Ohra Energie.
Head of the Gas Upgrading Department at EnviTec Anlagenbau GmbH & Co. KG., Stefan Laumann, said: “Thanks to this CNG filling station, we will soon have filled yet another gap on the map of CNG filling stations in Germany.” Currently, more than 760 CNG filling stations are usable across Germany, of which roughly 80% (660) offer bio-CNG. In Thuringia, only about 25 CNG filling stations have been completed to date.
