IMPROVED PROCESS FOR THE THERMO-CHEMICAL TREATMENT OF BIOMASS USING CONTROLLED APPLICATION OF OXYGEN

摘要

The present invention relates to a process for thermo-chemical treatment of biomass, said process comprising the following steps: Step 1) supplying biomass;Step 2) heating said biomass obtained in step 1) to a predetermined temperature T h to obtain a heated biomass; and Step3) the thermo-chemically treatment of said heated biomass obtained in step 2) at a temperature T t between a minimal treatment temperature T tmin and a maximum treatment temperature T tmax wherein T h < T tmin by supplying a controlled flow of oxygen to said biomass during at least part of said treatment to obtain a thermo-chemically treated biomass; Step 4) optionally cooling said thermo-chemically treated biomass obtained in step 3) to a cooled temperature T c in order to obtain a solid fuel and to the solid fuel thus obtained.