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https://hdl.handle.net/11147/11481
Title: | Multiparameter-based product, energy and exergy optimizations for biomass gasification | Authors: | Çağlar, Başar Tavşancı, Duygu Bıyık, Emrah |
Keywords: | Biomass gasification Gibbs free energy minimization Exergy Efficiency Optimization |
Publisher: | Elsevier | Abstract: | The thermodynamic modelling of biomass gasification was studied by using Gibbs free energy minimization approach. Different from the studies using the same approach, the simultaneous presence of all gasifying agents (air, H2O and CO2) was considered and a multiparameter optimization was applied to determine the synergetic effect of gasifying agents for hydrogen, syngas with a specific H2/CO ratio and methane production. The performance of gasification was assessed by using technical and environmental performance indicators such as product yields, cold gas efficiency, exergy efficiency, CO2 emission and the heat requirement of the gasifier. The results show that the simultaneous presence of gasifying agents does not create considerable changes in syngas yield, H2 yield, methane yield, CGE and exergy efficiency while it allows to tune the H2/CO ratio and the heat requirement of the gasifier. The highest syngas yield is observed at T > 1100 K and 1 bar and when SBR > 0.5 and/or CBR > 0.8 with the absence of air, at which CGE changes between 114% and 122% while exergy efficiency is between 77% and 86%. The results prove that CO2 offers several advantages as a gasifying agent and suggests that CO2 recycling from gasifier outlet is a useful option for the biomass gasification. | URI: | https://doi.org/10.1016/j.fuel.2021.121208 https://hdl.handle.net/11147/11481 |
ISSN: | 0016-2361 1873-7153 |
Appears in Collections: | Energy Systems Engineering / Enerji Sistemleri Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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1-s2.0-S0016236121010875-main.pdf | 5.63 MB | Adobe PDF | View/Open |
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