LignoSys - System study of small scale thermochemical conversion of lignocellulosic feedstock to biomethane

Proven small scale bioSNG technology for biomethane production - The report highlights the development and advances in thermo- and biochemical conversion of lignocellulosic feedstock to biomethane, including synergies between the thermo- and biochemical conversion routes for lignocellulosic feedstocks.

 There has been a rapid progress in the development of gasification technologies suitable for biomethane production in the small scale (<10 MWth) during the last two decades. Small scale bioSNG technology based on allothermal gasification is able to compete with large scale bioSNG technology based on pressurised oxygen-blown gasification. The technology proved to be competitive in terms of GHG emissions, primary energy needs and conversion efficiency without high production costs. The report assesses the performance of three small scale (<10 MWth) thermochemical conversion routes for lignocellulosic feedstock to biomethane: 1) Indirect gasification through the Heatpipe Reformer (HPR); 2) PyroCatalytic Hydrogenation (PCH) and 3) Indirect gasification through the WoodRoll® process. The conversion routes have all high conversion efficiencies, above 60%, based on LHV from biomass to bioSNG using wood chips with a water content of 40% as feedstock.

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