Research on the characteristics of biomass gasification in a fluidized bed

The depletion of fossil fuels and the increasing environmental problems, make biomass energy a serious alternative resource of energy. Biomass gasification is one of the major biomass utilization technologies to produce high quality gas. In this paper, biomass gasification was performed in a self-designed fluidized bed. The main factors (equivalence ratio, bed temperature, added catalyst, steam) influenced the gasification process were studied in detail. The results showed that the combustible gas content and the heating value increased with the increase of the temperature, while the CO2 content decreased. The combustible gas content decreased with the increase of the equivalence ratio (ER), but CO2 content increased. At the same temperature and at different ratios of CaO (from 0 to 20%), H-2 content was increased significantly, CO content was also increased, CH4 content increased slightly, but CO2 content was decreased. With the addition of steam at different temperature, the gas in combustible components increased, the content of H-2 increased obviously. The growth rate was 50% increased. As the bed temperature increased, gas reforming reaction increased, the CO and CH4 content decreased, but CO2 and H-2 content increased. (C) 2018 Energy Institute. Published by Elsevier Ltd. All rights reserved.