oxygen removal biomethane- De.OXO
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Deoxygenation: De.OXO®

Easy-to-integrate on-site deoxygenation systems with oxygen removal technology from biomethane (RNG) and hydrogen. For continuous gas injection, while achieving the grid specifications.
Oxygen content
0 < ppmv
Technology to remove oxygen from biomethane and hydrogen for ultra-pure gas.
Efficient removal
0 %
High efficiency as 99.8% of oxygen is removed.
Flowrate up to
0 Nm3/hr
Our De.OXO systems come in modular systems up to 4,000 Nm3/hr.

De.OXO solutions

De.OXO Biomethane®

Oxygen removal from biomethane to increase the purity and the value of biomethane.
Capacity
Up to 4000 Nm3/h biomethane (modular)
Gas purity
99.8% removal
< 5 ppmv O2
Conditions
Up to 80 bar (compatible with distribution and transmission grids)
<1% O2
Technology
Catalytic oxidation technology with optimal heat integration and closed-loop water removal.

De.OXO Hydrogen®

Removal of oxygen and water from hydrogen gas, usually derived from an electrolyzer hydrogen production system to meet fuel cell grade purity requirements.
Capacity
Up to 1,000 Nm3/hr hydrogen
Gas purity
99.8% removal
<5 ppmv oxygen content
Skid footprint
L4.5m x W2m x H2m (fits 20 ft. container)
Technology
Integrated TSA step to remove the water.

Our deoxygenation solution

Our deoxygenation systems are supplied with in-house technology. The below image is an illustrative representation of the De.OXO Biomethane®.

HyGear De.OXO - Reactor Vessel HyGear De.OXO - Reactor Vessel

Reactor vessel

The reactor is the heart of the De.OXO Biomethane® technology. Here, a reaction between oxygen and biomethane happens on high temperature forming water and CO2. This reaction removes the oxygen from the gas stream. The result is an oxygen concentration below 5 ppm, making the gas suitable for industrial applications requiring high purity.
Deoxygenation technology

Heat exchanger

In this heat exchanger, the biogas is introduced via a biogas blower and then flows back to the reactor vessel while heated up. The heat exchanger captures waste heat and uses it to preheat the incoming biogas before it enters the reactor.
Deoxygenation technology
De.OXO - Drycooler De.OXO - Drycooler

Drycooler

The dry cooler ensures that the biomethane remains at an optimal temperature for efficient oxygen removal while protecting system components and improving overall performance.
Deoxygenation technology

Features

  • Achieves stringent gas grid specifications
  • Compatible with distribution and transmission gas grids
  • Easy integration with existing or new upgrading system
  • Optimized energy efficiency
  • Modular systems: easy to scale as biomethane/RNG volume changes
  • Closed loop water removal
  • 24/7 service and monitoring

Purified gas stream

HyGear’s De.OXO® technology is an oxygen removal technology designed in-house for the deoxygenation of the gases: biomethane and hydrogen. Our Biomethane De.OXO system removes residual oxygen from biomethane to enhance the quality. Meanwhile, the De.OXO Hydrogen® system removes oxygen from hydrogen. Removing oxygen from hydrogen gas is essential for safety, purity, and efficiency in industrial and energy applications, including fuel cells and chemical processes.

Deoxygenation technology

Advantages

Easy integration with biogas upgraders & electrolyzers
Low maintenance
Robust & long lifetime
Results in <5 p.p.m. oxygen
Turnkey technology
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Oxygen removal from biomethane

Oxygen removal from biomethane and the removal of other impurities from biogas are a necessity in the U.S. bioenergy sector for safety, compliance, and efficiency. Deoxygenated biomethane has more value, is safer, meets pipeline and RNG (biomethane) standards, prevents equipment corrosion, optimizes upgrading processes, and improves combustion efficiency. It qualifies for incentives like RINs and LCFS credits, which in turn increase market value. Our De.OXO Biomethane® is easy to integrate with any type of biogas upgrading system.

De.OXO Biomethane®
oxygen removal biomethane- De.OXO

Oxygen removal from hydrogen

Oxyen removal from hydrogen is needed because the hydrogen gas derived from an elektrolyzer still contains water and hydrogen. Deoxygenated hydrogen is safer, meets purity standards, prevents corrosion, enhances industrial processes, and improves fuel cell performance. The De.OXO Hydrogen® is a compact system that fits a 20 ft. container and can be utilized with the Hy.GEN-E® and is easy to integrate with any other electrolyzer.

De.OXO Hydrogen®

De.OXO in USA

Biogas flowrate
0 Nm3 / year (1250 SCFM)
Oxygen content
0 < ppmv

For a project in Michigan, USA, we realized this system with a capacity of up to 2,000 Nm3/hr (1,250 SCFM). The low maintenance technology removes oxygen concentrations as high as 0.5% in conditioned biogas at low pressure (<1.5psig) and reduce them to below 5ppmv to meet the most stringent natural gas grid specifications. Low electricity consumption is achieved thanks to the De.OXO’s economizer shell and tube heat exchanger and its ability to operate at low pressure within the biogas to biomethane (RNG) upgrading process, thus eliminating the CAPEX and OPEX of an additional drying step. Projects previously inhibited from development due to stringent grid specs are now made possible with our De.OXO Biomethane® technology.

All projects
Biogas flowrate
0 Nm3 / year (1250 SCFM)
Oxygen content
0 < ppmv