Abstract
Catalytic fast pyrolysis (CFP) has been identified as a promising pathway for the production of renewable fuels and co-products. However, continued technology development is needed to increase process efficiency and reduce process costs. This report builds upon previous research in which a bifunctional metal-acid Pt/TiO2 catalyst was utilized in a fixed-bed reactor operated with co-fed H2 to improve product yield and reduce coke generation compared to conventional CFP methods. Here, we report further process optimization, in which we achieved similar CFP oil carbon efficiency (>35%) and CFP oil oxygen content (<20 wt %) to our previous report while reducing catalyst and equipment costs by increasing time-on-stream between regenerations by 40-95% and decreasing required regeneration time by more than a factor of 2. These process improvements were achieved by conducting parameter sweeps to determine optimum conditions for CFP and regeneration with key variables including pyrolysis temperature, catalytic upgrading temperature, hydrogen partial pressure, and regeneration oxygen concentration. Coupled with comprehensive oil analyses, these data provide foundational insight into the deoxygenation and coking chemistries for CFP under realistic process conditions while also advancing the technology through applied engineering.
Original language | American English |
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Pages (from-to) | 1235-1245 |
Number of pages | 11 |
Journal | ACS Sustainable Chemistry and Engineering |
Volume | 9 |
Issue number | 3 |
DOIs | |
State | Published - 25 Jan 2021 |
Bibliographical note
Publisher Copyright:© 2021 American Chemical Society.
NREL Publication Number
- NREL/JA-5100-78077
Keywords
- biomass
- catalyst regeneration
- catalytic fast pyrolysis (CFP)
- CFP process conditions
- fast pyrolysis
- hydrodeoxygenation
- pine
- Pt/TiO2