Second-generation biofuels by co-processing catalytic pyrolysis oil in FCC units

N. Thegarid, G. Fogassy, Y. Schuurman*, C. Mirodatos, S. Stefanidis, E. F. Iliopoulou, K. Kalogiannis, A. A. Lappas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Previous research showed that hydrodeoxygenated (HDO) pyrolysis-oils could successfully be co-processed with vacuum gasoil (VGO) in a labscale fluid catalytic cracking (FCC) unit to bio-fuels. Typically the hydrodeoxygenation step takes place at ~300. °C under 200-300. bar of hydrogen. Eliminating or replacing this step by a less energy demanding upgrading step would largely benefit the FCC co-processing of pyrolysis oils to bio-fuels. In this paper a bio-oil that has been produced by catalytic pyrolysis (catalytic pyrolysis oil or CPO) is used directly, without further upgrading, in catalytic cracking co-processing mode with VGO. The results are compared to the co-processing of upgraded (via HDO) thermal pyrolysis oil. Though small but significant differences in the product distribution and quality have been observed between the co-processing of either HDO or CPO, they could be corrected by further catalyst development (pyrolysis and/or FCC), which would eliminate the need for an up-stream hydrodeoxygenation step. Moreover, the organic yield of the catalytic pyrolysis route is estimated at approximately 30. wt.% compared to an overall yield for the thermal pyrolysis followed by a hydrodeoxygenation step of 24. wt.%.

Original languageEnglish
Pages (from-to)161-166
Number of pages6
JournalApplied Catalysis B: Environmental
Volume145
Early online date1 Feb 2013
DOIs
Publication statusPublished - 1 Feb 2014

Keywords

  • Biomass
  • Catalytic cracking
  • Refining
  • Renewable feedstock
  • ZSM-5

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