BIOMASS GASIFICATION IN A FLUIDIZED BED REACTOR: EFFECT OF TEMPERATURE ON PROPERTIES AND OXIDATIVE REACTIVITY OF CHARS

摘要

Biomass gasification is a promising alternative to fossil fuels for the synthesis of highly energetic products via Fischer-Tropsch or methanation processes. It is a thermochemical conversion occurring at high temperatures with many simultaneous reactions. For temperatures above 350°C, biomass undergoes a thermal decomposition called pyrolysis which leads to the formation of volatile products either condensable (steam and tars) or incondensable (H_2, CO, CO_2, CH_4 and C_2H_x) and a solid residue called char [1]. Then, the char reacts with steam and carbon dioxide at temperatures greater than 700°C to produce syngas.