Distributed production of hydrogen by auto-thermal reforming of fast pyrolysis bio-oil
| Autor: | Richard J. French, Stefan Czernik |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Hydrogen Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology chemistry.chemical_element Raw material Condensed Matter Physics Catalysis Steam reforming Fuel Technology Catalytic reforming chemistry Chemical engineering Pyrolysis Space velocity Hydrogen production |
| Zdroj: | International Journal of Hydrogen Energy. 39:744-750 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2013.10.134 |
| Popis: | We demonstrated an auto-thermal reforming process for producing hydrogen from biomass pyrolysis liquids. Using a noble metal catalyst (0.5% Pt/Al 2 O 3 from BASF) at a methane-equivalent space velocity of around 2000 h −1 , a reformer temperature of 800 °C–850 °C, a steam-to-carbon ratio of 2.8–4.0, and an oxygen-to-carbon ratio of 0.9–1.1, we produced 9–11 g of hydrogen per 100 g of fast pyrolysis bio-oil, which corresponds to 70%–83% of the stoichiometric potential. The elemental composition of bio-oil and the bio-oil carbon-to-gas conversion, which ranged from 70% to 89%, had the most significant impact on the yield of hydrogen. Because of incomplete volatility the remaining 11%–30% of bio-oil carbon formed deposits in the evaporator. Assuming the same process efficiency as that in the laboratory unit, the cost of hydrogen production in a 1500 kg/day plant was estimated at $4.26/kg with the feedstock, fast pyrolysis bio-oil, contributing 56.3% of the production cost. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect