Journal
ENERGY CONVERSION AND MANAGEMENT
Volume 52, Issue 3, Pages 1583-1588Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2010.11.003
Keywords
Gasification; Biomass; Fluidized bed; Equilibrium modeling
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This paper presents the investigation of the performance from different biomasses in a fluidized bed gasifier where steam has been used as gasifying as well as fluidizing agent. An experimental setup is fabricated to study the gasification performance of rice husk, which is of special relevance to rice-producing countries like China and India. An equilibrium modeling approach is deployed to predict the gas composition which has been compared with the experimental results. Calibration of the model with appropriate modeling coefficients was necessary to achieve close resemblance with the experimental values. Further, the model is used to predict the gas compositions from other biomass and benchmarked with the performance of coal. In this study, the gasification temperature is varied from 650 degrees C to 800 degrees C, whereas the steam-to-biomass ratio (S/B) is varied from 0.75 to 2.00. As the gasification temperature increases, the production of H-2 and CO increases but the generation of CH4 and CO2 reduces. The steam-to-biomass ratio was again found to influence the production rates. With increasing steam input, H-2. CO2 and CH4 were found to increase while CO reduces. (C) 2010 Elsevier Ltd. All rights reserved.
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