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- W2910331338 abstract "The gasification of biomass is considered one of the most important sources of renewableenergy due to the sustainability of agriculture waste around the world. There are many typesof gasification systems depending on the mechanism of gasification. BFBG is one of thepowerful gasifiers due to the mixing mechanism between the solid materials (biomass and theinert material) and the gas phase (air). Gasification process in the BFBG involves three maininteractive factors: hydrodynamics, heat transfer and chemical reaction.The present work focuses on improving the hydrodynamic performance and the product gasquality of a new BFBG developed at Cardiff University. Hydrodynamics has been analysedexperimentally and numerically using four different distributors designed to improve thefluidized bed fluidic patterns. The tests have been performed experimentally using arepresentative perspex prototype, while an isothermal 3D unsteady-state CFD simulation byusing OpenFOAM software based on multiphase resolution was employed in order to selectthe optimal design that can improve the system performance. The post improving of the BFBGproduct gas with catalyst has been analysed numerically by using ASPEN PLUS software.The hydrodynamic behaviour of the BFBG with four different air distributors was studiedexperimentally in terms of pressure drop and bubble formation. Two design factors wereobserved as the major contributors towards the impact on the BFBG performance, i.e. theorifice size and the distribution of orifices. Small orifices with triangular arrangement havedemonstrated superior performance than large orifice size with square arrangement. Similarfindings were obtained from the CFD simulation of the BFBG with the four distributors with anaccepted comparison with the experimental results and literature.Regarding the post -gasification improvement, ASPEN PLUS analysis showed the using ofBFBG product gas with suitable amount of N2 and Ar can increase the H2 and CO selectivity,H2/CO ratio and decrease the heat duty. The analysis results were compared with literature." @default.
- W2910331338 created "2019-01-25" @default.
- W2910331338 creator A5050983292 @default.
- W2910331338 date "2018-09-01" @default.
- W2910331338 modified "2023-09-24" @default.
- W2910331338 title "Experimental, numerical and analytical studyfor the improvement of biomass fluidizedbed gasifiers" @default.
- W2910331338 hasPublicationYear "2018" @default.
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