Abstract
To investigate pyrolysis behavior of wood biomass, laboratory scale experiments of pyrolysis about several kinds of wood
were carried out by thermo balance and Curie point pyrolyser. And also, laboratory scale two stage gasification were carried
out about apple tree to evaluate effect of fresh or old alumina and activated alumina. From the results of laboratory
experiments, first, CO2 was produced, then CO was produced over 200℃. CH4 was produced at temperature range 300℃～
700℃ mainly. H2 was appeared over 500℃ and the maximum peak was found at the temperature range 700℃～800℃.
From the results of laboratory scale two stage gasification, it was found that the activated alumina had reduced the amount of
tar and increased the amount of H2 gas.
