The gasification test of adopting petterized biomass fuel as porous media has been carried out on a self-made small atomospheric pressure fluidized bed

investigating the effects of various factors

such as gasification temperiture and oxygen concentration(under rich oxygen atomosphere)

gasification temperature and steam flow rate(under steam atomosphere)

as well as different kinds of bed media upon the composition and calorific value of produced gas respectively.Results of test show that the H2 content has increased

the CH4 content having dereased

and the calorific value of produced gas being decreased along with the gasification temperature rise;the oxygen concentration has certain effects on gasification;the H2 content in produced gas can be increased by heightening the oxygen concentration;along with the increase of steam flow rate

the H2 content in produced gas has been increased from 11.89% to 45.77%

however

the calorific value of produced gas being decreased.In three kinds of different bed media

taking zeolite as bed medium has the best effect of H2 production.