Experiment on biomass gasification characteristics withtar cracking in gasifier

Currently，the mainly technical problems are poor material adaptability, high content of tar and low heat value of product gas during the popularization and application of biomass gasifiers. In this paper, a new biomass gasifier was put forward, in which porous ceramics material inlayed an air guide of U-shaped tube. The experiments results indicated that, when straw stalk of moisture content 12.3% was used, the tar content was reduced to 0.02～0.06 g/m3, average gasification efficiency could reach up to 61.9% and average low heat value of producer gas was about 5.0 MJ/m3. The new structure of biomass gasifier is helpful to obtain high quality gas with lower tar content and higher heat value.