Biogas Upgrading
High-Efficiency Biomethane Production
Powermax Energy has an independent biogas upgrade brand called Biowatt.Biowatt is an authorized
distributor of Containerized Membrane Separation System.
Containerized Membrane
Separation System
Containerized Membrane Separation System are engineered for reliable long-term operation across a wide range of plant capacities and inlet gas conditions. Technology selection is based on gas flow rate, methane concentration, carbon dioxide content, recovery targets, and site-specific requirements, ensuring each installation achieves high methane purity, low methane slip, and stable performance under variable operating conditions.
It include both membrane separation systems and selective solvent-based washing systems, enabling raw biogas to be upgraded into high-quality biomethane for grid injection, transport fuel, or industrial gas use.
Containerized Membrane Separation System
Containerized Membrane Separation System is a proven technique that leverages semi-permeable membranes to selectively separate gas components based on their molecular size and permeability. We use a 3-stage membrane arrangement. This process takes advantage of the fact that carbon dioxide (CO2) can readily penetrate through the membrane, while methane (CH4) does not, allowing for the efficient removal and separation of CO2. By employing membrane separation, the gas can be upgraded to Renewable Natural Gas (RNG) by eliminating CO2 and enhancing the methane content.
Our packaged 3-Stage Membrane System uses several thousand hollow-fibre membrane modules bundled in a stainless steel tube. These hollow fibres are composed of polymer material which selectively separate CO2 and CH4 contained in the biogas stream. This gas separation procedure operates at room temperature, so no external heat source is required.
Advantages of Separation Membranes
30–40% Energy Savings
No Auxiliary Materials
No emissions
Ambient Separation
Low Space Requirements
Continuous Separation
Modular Design
High selectivity
Scalable
High yields of > 99%
High purity
Technical Parameter
| Biogas production volume | Methane content in feed gas | CO₂ content in feed gas | Pure natural gas purity | Membrane lifespan (basic) | Modular configuration |
|---|---|---|---|---|---|
| 500Nm³/h | 55-75% | 20-45% | 95-99.5% | 80,000-120,000h | 40ft container*1 |
| 625Nm³/h | 55-75% | 20-45% | 95-99.5% | 80,000-120,000h | 20ft container*1 40ft container*1 |
| 840Nm³/h | 55-75% | 20-45% | 95-99.5% | 80,000-120,000h | 40ft container*2 |