| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1271274 | International Journal of Hydrogen Energy | 2012 | 9 Pages |
In the present study, an updraft biomass gasifier combined with a porous ceramic reformer was used to carry out the gasification reforming experiments for hydrogen-rich gas production. The effects of reactor temperature, equivalence ratio (ER) and gasifying agents on the gas yields were investigated. The results indicated that the ratio of CO/CO2 presented a clear increasing trend, and hydrogen yield increased from 33.17 to 44.26 g H2/kg biomass with the reactor temperature increase, The H2 concentration of production gas in oxygen gasification (oxygen as gasifying agent) was much higher than that in air gasification (air as gasifying agent). The ER values at maximum gas yield were found at ER = 0.22 in air gasification and at 0.05 in oxygen gasification, respectively. The hydrogen yields in air and oxygen gasification varied in the range of 25.05–29.58 and 25.68–51.29 g H2/kg biomass, respectively. Isothermal standard reduced time plots (RTPs) were employed to determine the best-fit kinetic model of large weight biomass air gasification isothermal thermogravimetric, and the relevant kinetic parameters corresponding to the air gasification were evaluated by isothermal kinetic analysis.
► An updraft biomass gasifier with a porous ceramic reformer for hydrogen-rich gas production was studied. ► The ER values of maximum gas yield were 0.22 and 0.05 in air and oxygen gasification. ► The best-fit kinetic models of air gasification were determined by Reduced time plots (RTPs). ► The activation energy is 34.295 kJ mol−1 and 23.797 kJ mol−1 in the 5 g and 10 g samples thermogravity, respectively.
