Biomass to hydrogen via fast pyrolysis and catalytic steam reforming of the pyrolysis oil or its fractions
Journal Article
·
· Industrial and Engineering Chemistry Research
- National Renewable Energy Lab., Golden, CO (United States)
Pyrolysis of lignocellulosic biomass and reforming of the pyroligneous oils are being studied as a strategy for producing hydrogen. A process of this nature has the potential to be cost competitive with conventional means of producing hydrogen. The authors propose a regionalized system of hydrogen production, where small- and medium-sized pyrolysis units (<500 Mg/day) provide bio-oil to a central reforming unit to be catalytically converted to H{sub 2} and CO{sub 2}. Thermodynamic modeling of the major constituents of the bio-oil has shown that reforming is possible within a wide range of temperatures and steam-to-carbon ratios. In addition, screening tests aimed at catalytic reforming of model compounds to hydrogen using Ni-based catalysts have achieved essentially complete conversion to H{sub 2}. Existing data on the catalytic reforming of oxygenates have been studied to guide catalyst selection. A process diagram for the pyrolysis and reforming operations is discussed, as are initial production cost estimates. A window of opportunity clearly exists if the bio-oil is first refined to yield valuable oxygenates so that only a residual fraction is used for hydrogen production.
- DOE Contract Number:
- AC36-83CH10093
- OSTI ID:
- 509347
- Journal Information:
- Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 5 Vol. 36; ISSN 0888-5885; ISSN IECRED
- Country of Publication:
- United States
- Language:
- English
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