NOVELTY - Solid biomass (103) having particle size of less than 3 mm and is gasified. Particulate material is separated from the obtained combustible gaseous stream. The combustible gaseous stream is adiabatically and convectively cooled, by contacting stream with an organic liquid, and tar components in the combustible gaseous stream are condensed. Particles comprising tar components are removed from the adiabatically and convectively cooled combustible gaseous stream (109). The evaporated organic liquid in the cooled combustible gaseous stream is optionally condensed.    USE - Gasification of biomass for obtaining combustible gas used for combustion in combustion engine and steam turbine.    ADVANTAGE - The biomass is efficiently gasified.    DETAILED DESCRIPTION - Solid biomass having particle size of less than 3 mm and moisture ratio of less than 15 wt.% is provided. The biomass is gasified in a cyclone gasifier (204) at 400-1300 degrees C in the presence of sub-stoichiometric quantities of oxygen. Particulate material is separated from the obtained combustible gaseous stream. The combustible gaseous stream is adiabatically and convectively cooled, by contacting stream with an organic liquid having a temperature less than the dew-point of the combustible gaseous stream, and tar components in the combustible gaseous stream are condensed. Particles comprising tar components are electrostatically removed from the adiabatically and convectively cooled combustible gaseous stream. The evaporated organic liquid in the cooled combustible gaseous stream is optionally condensed. Thus, combustible gas for combustion in combustion engine is obtained. INDEPENDENT CLAIMS are included for the following:    (1) system for gasifying biomass;    (2) purification system; and    (3) method for removing tar components from combustible gas.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of system used for gasifying biomass.    Solid biomass (103)    Adiabatically and convectively cooled combustible gaseous stream (109)    Purified combustible gaseous stream (110)    Particle-enriched organic liquid (112)    Cyclone gasifier (204)