Ammongas uses the proven absorber stripper system with amines for upgrading biogas. The process has been used for many years in the oil and gas industry for removal of CO₂, H₂S other acidic gases, and is known for being a robust and reliable system.

By separating and removing the CO₂, raw biogas is efficiently upgraded to high-purity biomethane. Our advanced absorption process is exceptionally efficient, with the ability to limit methane slip below 0.05% – resulting in a methane recovery rate exceeding 99.95%.

Furthermore, Ammongas’ amine upgrading can remove down to less than 50 ppm of CO₂ in the biomethane stream, and thereby prepare the gas for liquefaction.

Our reliable technology ensures low operational costs and an average uptime of 99%, including comprehensive service support.

Advantages:

• Designed to your needs
• Expensive pre-treatment of biogas is not necessary with an upgrading plant from Ammongas
• A pressureless upgrading process saves a lot of costs in the building phase and less expenses in maintenance.
• The parts in an upgrading plant from Ammongas are robust and of high quality, which ensures a long life.
• The share of biomethane in the Danish gas system is approximately 40%. More than half of that is processed by an Ammongas upgrade plant.

Biomethane polishing removes residual CO₂ from upgraded biogas or natural gas, enabling the methane to be liquefied. Without this polishing step, remaining CO₂ would freeze and crystallize during the CH₄ liquefaction, leading to operational issues and potential damage to equipment.

To prevent these complications, Ammongas offers a polishing process -similar to a full biogas upgrading plant- that reduces CO₂ levels to below 50 ppm. At this purity, the gas can be safely liquefied and is ready for use as a transport fuel or other energy applications.

Our proven amine technology yields superior results for establishing a low CO₂ content, making it an ideal solution for gas polishing applications. The Ammongas polishing unit offers the same advantages as a biogas upgrading unit:

Key Facts:

• Superior CO2 Removal Efficiency
• Proven Amine Technology
• High Methane Recovery
• Scalable and Modular Design
• Low Operating Costs
• Compatible with Existing Systems
• Robust Against Gas Composition Variability
• Environmentally Friendly

As global momentum builds around climate action, CO₂ taxation is rapidly becoming a regulatory reality. For forward-looking companies, carbon capture is not just an environmental solution – it’s a smart financial strategy to significantly reduce CO₂-related costs.

By integrating carbon capture into your operations, Ammongas enables efficient processing and purification of CO₂ from flue gas or tail gas. With carbon capture now part of our core offering, AmgCarbonX delivers a cost-effective, high-performance path toward lower emissions and a stronger position in a net-zero future. Our high-efficiency system ensures that less than 1% CO₂ remains in the treated flue gas.

With extensive experience in CO₂-separation, Ammongas has built deep expertise in carbon capture from biogas plants-expertise that has since been successfully adapted to flue gas capture. In 2021, Ammongas won the National District Heating Award in collaboration with Thisted and SEG A/S for their demonstration of carbon capture from waste-heat flue gas by using our proprietary technology.

• LCO₂: CO₂ liquefaction
• Carbon Capture (CCS & CCUS): AmgCarbonX