METHOD FOR OBTAINING SYNTHESIS GAS WITH A GIVEN RATIO BETWEEN THE VOLUME CONTENT OF HYDROGEN AND CARBON MONOXIDE BY MEANS OF MULTI-STAGE PYROLYTIC CONVERSION OF BIOMASS Russian patent published in 2018 - IPC C10J3/00 C10B47/00 C08J11/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method for production from plant biomass, which can be used in the power industry and in a number of chemical industries. Method is carried out by passing the processed biomass stage of pyrolysis in the section, heated to a temperature of 600 °C, and the volatile pyrolysis products released during the thermal decomposition of biomass are filtered through the coal residue formed at the pyrolysis stage into the second independently heated section at a temperature of 1000 °C. At the same time, before being directed to a device for thermal conversion to carbon monoxide and hydrogen, biomass is subjected to low-temperature pyrolysis at a temperature in the range of 200–350 °C, as a result, there is a change in its elemental composition, expressed in a change in the ratio between the content of hydrogen and oxygen, which leads to a change in the ratio between the volume content of hydrogen and carbon monoxide in the resulting synthesis gas and allows to obtain synthesis gas with a ratio between the volume content of hydrogen and carbon monoxide in the range from 1:1 to 2:1.

EFFECT: technical result consists in the development of a method for producing synthesis gas with a given ratio between the volume ratio of hydrogen and carbon monoxide.

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