Experimental Investigation of Biomass Gasification in a Fixed Bed Gasifier

In this paper there are presented results of experimental investigation of biomass gasification process in a fixed bed gasifier. Gasification was carried out with atmospheric pressure and air was used as oxidizer. Parameters taken into consideration were the air flow rate, amounts of biomass supplied into a gasifier, parameters of raw biomass- elemental composition and initial moisture content. Two kinds of biomass were investigated: oats husk pellets and wood pellets. Molar fractions of two combustible species in the syngas (CO and H2) were measured on- line and more detailed composition of the syngas was done for a few experimental points. Sum of molar fractions (dry basis) of main combustible species in the syngas (CO+H2) was 23-35% depending of the kind of biomass and parameters of the process. Experimental results were compared with other researchers' findings.