BIOMASS HYDROLYSIS FOR OBTAINING HIGH QUALITY LIQUID FUEL Russian patent published in 2014 - IPC C07C1/00 C10G1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to versions of method of obtaining liquid products from biomass. Method includes the following stages: a) biomass hydrolysis in reactor vessel, containing molecular hydrogen and deoxigenation catalyst, with formation of output products, containing CO₂, CO and C₁-C₃ gases, partially reduced pyrolysis product, coal, and first stage heating; b) removal of coal from partially reduced pyrolysis product; c) hydroconversion of partially reduced pyrolysis product in hydroconversion reactor vessel with application of hydroconversion catalyst in presence of CO₂, CO and C₁-C₄ gases, formed at stage a), with formation of practically completely reduced pyrolysis liquid, gas mixture, containing CO, CO₂, and highly volatile hydrocarbon gases (C₁-C₄) and second stage heating; d) steam reforming of at least part of gas mixture with formation of reformed molecular hydrogen; and e) introduction of said reformed molecular hydrogen into reactor vessel for said biomass hydrolysis. Stages a) and c) are carried out under conditions, in which about 40-60% of oxygen in biomass are converted into H₂O and about 40-60% of oxygen are converted into CO and CO₂.

EFFECT: method provides self-supported balanced process for conversion of biomass into liquid product with application of hydrolysis, which with single initiation does not require introduction of additional reagents, heating or energy from external sources.

20 cl, 1 dwg, 1 tbl