Within the LignoSys project the performance of three small scale (~10 MWth) thermochemical conversion routes for lignocellulosic feedstock to biomethane have been investigated.

The three thermochemical options are:

• Indirect gasification through the Heatpipe Reformer (HPR)
• PyroCatalytic Hydrogenation (PCH)
• Indirect gasification through the WoodRoll® process

The LignoSys final report has been published as Renewtec Report 008:2018.

The most striking result is that small scale bioSNG technology based on allothermal gasification is able to compete with large scale bioSNG technology based on pressurised, oxygen-blown gasification not only in terms of GHG emissions, primary energy need and conversion efficiency but also in terms of bioSNG production cost!