Techno-economic analysis and life cycle assessment of hydrogen production from different biomass gasification processes |
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| Authors: | Yaser Khojasteh Salkuyeh Bradley A Saville Heather L MacLean |
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| Affiliation: | 1. Department of Chemical Engineering, Faculty of Engineering, University of Guilan, Rasht, Iran;2. Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, Ontario, M5S 3E5, Canada;3. Department of Civil and Mineral Engineering, University of Toronto, 35 Street George Street, Toronto, Ontario, M5S 1A4, Canada |
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| Abstract: | The paper presents techno-economic analyses and life cycle assessments (LCA) of the two major gasification processes for producing hydrogen from biomass: fluidized bed (FB) gasification, and entrained flow (EF) gasification. Results indicate that the thermal efficiency of the EF-based option (56%, LHV) is 11% higher than that of the FB-based option (45%), and the minimum hydrogen selling price of the FB-based option is $0.3 per kg H2 lower than that of the EF-based option. When a carbon capture and liquefaction system is incorporated, the efficiencies of the EF- and FB-based processes decrease to 50% and 41%, respectively. The techno-economic analysis shows that at a biomass price of $100 per tonne, either a minimum price of $115/tonne CO2e or a minimum natural gas price of $5/GJ is required to make the minimum hydrogen selling price of biomass-based plants equivalent to that of commercial natural gas-based steam methane reforming plants. Furthermore, the LCA shows that, biomass as a carbon-neutral feedstock, negative life cycle GHG emissions are achievable in all biomass-based options. |
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| Keywords: | Hydrogen production Biomass gasification Entrained flow gasification Fluidized bed gasification |
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