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Título
Optimization for biogas to chemicals via tri-reforming. Analysis of Fischer-Tropsch fuels from biogas
Autor(es)
Materia
Biogas
Chemical engineering
FT liquids
Mathematical Optimization
Process design
Fecha de publicación
2018-07
Editor
Elsevier
Citación
Hernández, B., Martín, M. (2018). Optimization for biogas to chemicals via tri-reforming. Analysis of Fischer-Tropsch fuels from biogas. Energy Conversion and Management 174, pp. 998–1013, https://doi.org/10.1016/j.enconman.2018.08.074
Serie / N.º
JuntaGIR;1
Resumen
[EN]This paper presents an optimization approach for the production of syngas from biogas via tri-reforming. The
optimization, formulated as a NLP problem, is performed for three syngas ratios according to the desired product:
methanol, ethanol or Fischer-Tropsch (FT) fuels. As a result, the optimal operating conditions and biogas
composition are defined. For the production of ethanol, a biogas composed by a CH4:CO2 ratio of 0.52:0.48 is
desired, requiring 0.035 mol of O2 per mol of Biogas in the reformer. For the production of methanol and FT,
biogas with the largest content of methane is suggested to be reformed with 0.275 molO2/mol biogas. The largest
H2:CO ratio required for methanol is achieved by feeding steam in a WGS reactor after the reformer. The syngas
optimization study is completed by evaluating tri-reforming for the production of FT fuels from biogas via high
and low temperature FT synthesis. The production cost for a plant fed with 12 MMm3/y of biogas results in $3/
gal for biodiesel via HTFT and $1.7/gal via LTFT. A scale-up study is also carried out for plants with both modes of operation, showing a cut point for profitability at 450MMm3/y.
URI
ISSN
0196-8904
Versión del editor
Colecciones
- PSEM3. Artículos [39]