抄録
Gasification technology that can produce useful gases such as hydrogen from waste has been developed because both the disposal of waste and the energy recovery are major current issues in the area of waste management and sustainable use. One of key technologies in this system is to effectively reduce the emission of by-products such as tar components. Experiments are conducted for wood chips and RPF materials by using a series of gasifier and tar decomposer equipped with catalyst bed in two temperatures of 750℃ and 810℃ in gasifier. Methanol synthesis from gasified gas was also tested. The results show that tar can be decomposed over 80 % efficiency, and this value was lower than expected because the temperature of catalyst bed was slightly low. The tar concentration after tar decomposer in higher temperature condition was less than 150 mg/m^3. The results regarding to polycyclic aromatic hydrocarbons (PAHs) were also discussed.
