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IJSTR >> Volume 9 - Issue 6, June 2020 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

An Experimental And Numerical Study On The Performance Of Downdraft Gasifier With Blends Of Biomass

[Full Text]



Murugan P C, Vel Kumara Samy V, Vishnu Bharathi T, Surya Parkash M



Biomass blend, Gasifier, Producer gas, Rice husk, Sawmill residues, Species-transport.



Biomass gasification is emerged as a promising technology for meeting the world's growing energy demands by the waste produced in developing societies. The gasifier used in the remote areas for the rural application has been designed for only single feedstock and utilizing it in a gasifier cannot meet the energy demands. Besides, only limited works have been carried out on using the biomass blends in a gasifier through equilibrium modelling and experimental approach, whereas, the simulation through CFD predicts better results when compared with the other approach and the numerical simulation on the biomass blends are in scarce. Hence, in this article, an experimental and numerical study has been proposed on the possibility of using rice husk and sawmill residues in an industrial type downdraft biomass gasifier. The numerical simulation was carried out using the species-transport model with the k-ε turbulence model. The effect of equivalence ratio, producer gas composition, temperature distribution, and the calorific value of gas were studied. The results obtained from the numerical simulation is further validated with the experimental results. Both the studies reported that the blending ratio of 60:40 shows better performance with CO: 20.3-24.5%, H2:18.5-19.2%, CH4: -2.8-3.1% and 5.92 MJ/Nm3 respectively.



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