CATALYTIC PYROLYSIS OF FINELY GROUND BIOMASS AND METHOD OF REDUCING SIZE OF SOLID BIOMASS PARTICLES Russian patent published in 2011 - IPC C10G1/00 

FIELD: chemistry.

SUBSTANCE: described is a method for thermal conversion of finely ground biomass, comprising the following steps: a) preparing a mixture of finely ground biomass, heat carrier and inorganic ground material. The preparation involves mixing biomass particles with size of 5-50 mm with an inorganic ground material with particle size 0.05-5 mm, and mixing the mixture with a gas which reduces the size of the biomass particles to 0.1-3 mm; b) converting the mixture by heating to temperature 150-600°C. Described also is a method of producing bio-liquid from solid biomass material, said method involving the following steps: a) preparing solid biomass in form of particles with size greater than 5 mm; b) mixing biomass particles from step (a) with inorganic ground material having particle size 0.05-5 mm; c) mixing the mixture obtained at step b) with a gas, which reduces the size of biomass particles to 0.1-3 mm; d) subjecting biomass particles obtained at step c) to hydrothermal or enzymatic or thermal or catalytic conversion.

EFFECT: conducting thermal conversion at milder temperature conditions in the presence of a heat carrier - ground inorganic material and catalytically active material.

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