Biogas purification pilot plants hosted by the platform
Démonstrateur TERRAO®
The TERRAO® project, led by StarkLab (the favourite in the 2022 Open Innovation Factory call for projects by gas operators looking to reduce the oxygen content of biomethane), which specialises in R&D on air quality and the energy transition, aims to scrub biogas by liquid process.
The gas operators involved in this project are actively committed to the development of renewable and low-carbon gases as a direct extension of European and national policies aimed at achieving carbon neutrality by 2050. The project is a response to the challenge of accepting more biomethane from methanisation into gas networks, the high oxygen content of this renewable gas proving an obstacle to its injection.
The project involves experiments with the TERRAO® process at pilot plant scale to purify biogas (the removal of hydrogen sulfide without adding oxygen, and the removal of residual oxygen) on INSA’s SOLIDIA platform.
Three TERRAO® units, each with the capacity to process 300 m3/h of biogas, have been installed in series on the platform. Each has a particular function, and they can be assessed as a group or individually
Biogas from the producer, Cler Verts, is discharged at about 9.5 bar, without H2S and with O2 at about 500 ppm. Concentrations on the test bed are achieved with the injection of O2 and H2S from bottles. The concentrations of these two compounds entering and leaving the pilot to assess the efficiency of the process will be measured by the platform’s chromatograph. Input and output values will be captured alternately every 3 minutes.
