4-2 Effect of Tar Formation on Biomass Downdraft Gasification Reactor of Wood Pellet with Variation of Moisture Content

抄録

One of the problem in biomass gasification technology is the emergence of tar which will reduce the efficiency of the biomass system performance. This research present on experimental of tar formation in the small downdraft gasifier with 500 mm length and 120 mm in diameter, in order for achieving a better outcome in syngas production. The research was done using wood pellet due to the easiness of availability. This experiment was conducted with the variation of moisture content on the condition 2%, 4%, 6%, 8%, and 10 % because of the limitation on wood pellet drying and the limitation of humidity. The occurrence of tar needs to be reduced because it will disrupt the performance of other systems. In addition, the effects of initial moisture contents on the yields of tar formation products from wood pellet were studied. The result showed by increasing moisture contents, the tar formation products indicated increased too as well as for chemical substances as acenaphthylene, acenaphthene, fluorene. The research had been carried out, and the result is differentiation on moisture content will affect the tar composition.