Comparison between secondary thermal cracking methods and venturi scrubber filtering in order to reduce tar in biomass gasification

Abstract

Biomass Gasification is a potential technology to overcome energy needs in the present time. However, one of the major challenges in using syngas as an electric power is a tar problem in producer gas that can cause fouling in pipes. The purpose of this research, is to show the comparison between secondary thermal cracking and venturi scrubber in order to reduce tar concentration. The performance of this method was tested in 10 kW rice husk biomass gasifier. The maximum tar reduction efficiencies of venturi scrubber and secondary thermal cracking were found 89% and 74% respectively. This is because as the ER increased, the temperature in the pyrolysis zone was also increased, hence, enhancing tar reduction with thermal cracking.