Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/123633
Title: Modeling Simulation and Experimental Studies on Downdraft Biomass Gasifier
Researcher: PRATIK N SHETH
Guide(s): B. V. Babu
Keywords: Biomass Gasifier
University: Birla Institute of Technology and Science
Completed Date: 
Abstract: Energy is the most important requirement to sustain life for any living organism in the biosphere. The finite energy resources will not only get consumed in the near future due to tremendous demand, but their impacts on health and air pollution are also of serious concerns. The effects on global and environmental air quality of pollutants released into the atmosphere from fossil fuels provide strong arguments for the substitution of fossil fuels with renewable energy resources. Bioenergy is essentially renewable or carbon neutral. Carbon dioxide released during the combustion of fuels derived from biomass circulates through the biosphere, and is reabsorbed in equivalent stores of biomass through photosynthesis. newlineThe direct combustion of biomass leads to an incomplete and inconsistent combustion, which may produce organic particulate matter, carbon monoxide and other organic gases. Hence, biomass is required to be upgraded in terms of more easily handled fuels, namely gases, liquids, and charcoal using various technologies such as pyrolysis, gasification, carbonization, digestion, fermentation, etc. Although fermentation or digestion as a process is successfully used to produce ethanol, it is feedstock limited, time consuming and results in low yields. Biomass gasification is one of the promising routes amongst the renewable energy options of future energy. Gasification is a process of conversion of solid biomass into combustible gas, known as producer gas, by partial oxidation. newlineIn the present study, a combined transient single particle and fuel bed model is formulated by incorporating the mass, momentum and energy balances. The developed model takes into account of the kinetics of chemical reactions, heat and mass transfer between solid and gaseous phases and transport of volatiles produced. To validate the combined transport and kinetic model, experimental study is carried out using wood waste as biomass to generate producer gas using an Imbert downdraft gasifier. The developed model is also validated with the
Pagination: 3.80 MB
URI: http://hdl.handle.net/10603/123633
Appears in Departments:Chemical Engineering

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