Bioethanol was considered as raw material for hydrogen production by steam reforming, coupled with a proton exchange membrane fuel cell for heat and power cogeneration (5 kWelectrical + 5 kWthermal). The water/ethanol feeding ratio and the ethanol purity were considered for process optimisation. An increase of the water/ethanol ratio improved H2 yield at the expenses of higher heat input to the reformer and lower electrical output. However, the presence of a high enthalpy exhaust stream increased the available thermal output, with a consequent increase of the thermal and overall efficiency of the plant. Finally, the bioethanol purification step, which is energy- and cost-intensive, has been taken into account, searching for an optimisation of the bioethanol purification strategy for the overall process intensification.
H2 Production from Bioethanol and its Use in Fuel-Cells / I. Rossetti, J. Lasso, M. Compagnoni, G.D. Guido, L. Pellegrini. - In: CHEMICAL ENGINEERING TRANSACTIONS. - ISSN 2283-9216. - 43(2015), pp. 229-234. [10.3303/CET1543039]
H2 Production from Bioethanol and its Use in Fuel-Cells
I. RossettiPrimo
;J. Lasso;M. Compagnoni;
2015
Abstract
Bioethanol was considered as raw material for hydrogen production by steam reforming, coupled with a proton exchange membrane fuel cell for heat and power cogeneration (5 kWelectrical + 5 kWthermal). The water/ethanol feeding ratio and the ethanol purity were considered for process optimisation. An increase of the water/ethanol ratio improved H2 yield at the expenses of higher heat input to the reformer and lower electrical output. However, the presence of a high enthalpy exhaust stream increased the available thermal output, with a consequent increase of the thermal and overall efficiency of the plant. Finally, the bioethanol purification step, which is energy- and cost-intensive, has been taken into account, searching for an optimisation of the bioethanol purification strategy for the overall process intensification.File | Dimensione | Formato | |
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