DESING OF FLUIDIZED BED BIOMASS GASIFIER (COLD MODEL AND HOT MODEL)

摘要

The bench scale fluidized bed gasifier with a cold model unit is designed to produce synthesis gas from biomass sample. The hydrodynamic studies on cold model unit of gasifier gives information about the optimum conditions required for proper fluidization of biomass samples. The hot model gasifier gasifies the biomass at these predetermined optimum conditions with the application of steam and heat in addition. The studies on the effect of different parameters of gasification process indicate that Hydrogen yield in the product gas increases with the increase in temperature, equivalence ratio and steam to biomass ratio up to certain limit after which the yield decreases due to the effect of other parameters. Air and steam supply together to the real mode gasification process improves the performance of gasifier.