EnviTec Biogas has entered Sweden's market with its EnviThan gas upgrading system.
Vårgårda-Herrljunga Biogas is expanding its biogas facility with another gas upgrading plant, which will meet the prescribed DIN standard for vehicle fuel.
While the rated capacity of the new gas upgrading plant amounts to 402 Nm³ per hour of biomethane (600 Nm³/h of raw biogas, 65 Vol. % methane), it is already prepared for a capacity expansion of up to 566 Nm³ per hour of biomethane (840 Nm³/h of raw biogas, 65 Vol. % methane).
The plant is connected to a local four-kilometre-long 4-bar gas network that is, in turn, connected to a high-pressure station.
Here, the pressure is increased to 250 bar.
Biomethane can then be filled into mobile containers and delivered to a CNG filling station for future use as fuel.
The process developed by Evonik Industries and EnviTec is particularly environmentally friendly because it takes advantage of the different sizes and speeds of passage of gas molecules, according to the organisations.
Since carbon dioxide molecules are smaller than methane molecules, they can migrate through the membrane much faster. The methane remains on the high-pressure side of the membrane, while the CO2 molecules of the biogas pass through.
The gas upgrading process thus requires neither chemicals nor water or other additives. The biomethane produced can now be used wherever natural gas is used - including the fuel sector, like in Sweden.
"Our market entry in Sweden once again highlights our overall expertise and flexibility in Europe," said Maurice Markerink, managing director of EnviTec Plant Construction.
He continued: "Before selecting its second gas upgrading plant, the customer made a thorough comparison of the power consumption, the raw gas upgrading design, and the quality level - and it was our EnviThan technology that finally won them over."
EnviTec Biogas enters Swedish market with upgrading system
