Deoxygenation technology
Oxygen removal technology
Many applications, such as gas grid injection, require an ultra-pure biomethane stream with oxygen levels below 5 ppm. This is where HyGear’s De.OXO® technology comes in. The system can be easily integrated downstream of any biogas upgrader, including both new and existing installations.
At the core of HyGear’s De.OXO® systems is advanced deoxygenation technology, designed to remove residual oxygen from the biomethane stream and meet stringent gas grid specifications.
Features
- Reliable technology that lasts a lifetime
- Recuperative heat integration
- Integrated closed loop TSA for water removal
- Intermittent operation possible
- Fast start-up and hot standy possible
- High purity
- Low maintenance
Biomethane: reactor as heart
Our De.OXO Biomethane® is easy to integrate with any new or existing biogas upgrading system. The process starts with a catalytic reactor that converts oxygen into CO₂ and water. After that, the water is removed using our closed-loop temperature swing adsorption technology. A recuperative heat exchanger preheats the incoming gas to reduce energy use, significantly reducing electricity demand. The system delivers a pure biomethane stream with oxygen levels below 5 ppmv, an outlet temperature <45°C, and a pressure compatible with the desired outlet pressure for distribution or transmission grids.
Hydrogen: integrated TSA
Our De.OXO Hydrogen® first cools down hydrogen to remove moisture. Inside the reactor, oxygen reacts with hydrogen, forming water, which reduces oxygen levels to <5 ppmv. The gas is then cooled again to remove excess water before entering one of two TSA vessels, which further dries the hydrogen to <5 ppmv moisture.
The TSA system operates continuously, alternating between adsorption and regeneration (without blower) using a portion of the feed gas. Dew point and oxygen levels are constantly monitored.
