FIELD: chemistry.
SUBSTANCE: invention can be used in the chemical industry. To obtain synthesis-gas from biomass by carbonisation, preliminary drying and dehydration of the initial biomass are carried out. After that, low-temperature carbonisation is performed at atmospheric pressure and isolation from oxygen at a temperature in a carbonisation furnace of 200-400°C, rate of the temperature growth 5-20°C/min and the time of the initial biomass keeping of 20-90 min. Products in the form of pyrolytic gas and charcoal are obtained. Charcoal is cooled at an outlet from the carbonisation furnace to a temperature of 60-280°C and transported to a storage tank. Pyrolytic gas is separated from powder-like charcoal. A part of separated pyrolytic gas is supplied into a combustion layer for burning, and the other part is heated by hot smoke gas, formed in the process of burning in the combustion layer. Heated pyrolytic gas is supplied into the carbonisation furnace as a heat source. Discharged hot smoke gas after heat exchange is supplied into a zone of preliminary processing of the initial biomass for drying. Separated powder-like charcoal is supplied into the storage tank. Powder-like charcoal is milled with obtaining a suspension, which is introduced into the furnace for gasification by a high-pressure pump.
EFFECT: invention makes it possible to increase gasification efficiency, stability and reliability of the system for obtaining synthesis-gas from biomass.
9 cl, 1 dwg, 1 tbl, 6 ex
