Steam reforming of pyrolysis oil aqueous fraction obtained by one-step fractional condensation

Ville Paasikallio (Corresponding Author), Johanna Kihlman, Cesar Andres Sanchez Sanchez, Pekka Simell, Yrjö Solantausta, Juha Lehtonen

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)

Abstract

The aqueous fraction of pyrolysis oil, which was produced and fractionally condensed in VTT's 20 kg/h fast pyrolysis Process Development Unit, was successfully steam reformed in a fixed-bed reactor over a commercial nickel catalyst without any additional steam. As a result of the one-step fractionation process, the aqueous pyrolysis oil, which had a water content of 72.7 wt%, contained only limited amounts of thermally unstable sugar-type compounds that typically hinder the performance of catalytic steam reforming. An average hydrogen yield of 81% was achieved over two hours at relatively mild process conditions: 650 °C, steam-to-carbon ratio of 3.84 and gas hourly space velocity of 5000 h-1. When the reaction temperature was varied between 600 and 750 °C, clear catalyst deactivation was only observed at 600 °C. In theory, by utilizing the one-step fractional condensation scheme and subsequently steam reforming the aqueous pyrolysis oil, sufficient amounts of hydrogen could be generated for significantly deoxygenating the organic pyrolysis oil via catalytic hydrodeoxygenation.
Original languageEnglish
Pages (from-to)3149-3157
JournalInternational Journal of Hydrogen Energy
Volume40
Issue number8
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

Steam reforming
steam
pyrolysis
Condensation
Pyrolysis
condensation
oils
Steam
Catalytic reforming
catalysts
Hydrogen
Catalyst deactivation
hydrogen
Fractionation
sugars
Sugars
fractionation
deactivation
Water content
moisture content

Keywords

  • fast pyrolysis
  • bio-oil
  • steam reforming
  • hydrogen

Cite this

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title = "Steam reforming of pyrolysis oil aqueous fraction obtained by one-step fractional condensation",
abstract = "The aqueous fraction of pyrolysis oil, which was produced and fractionally condensed in VTT's 20 kg/h fast pyrolysis Process Development Unit, was successfully steam reformed in a fixed-bed reactor over a commercial nickel catalyst without any additional steam. As a result of the one-step fractionation process, the aqueous pyrolysis oil, which had a water content of 72.7 wt{\%}, contained only limited amounts of thermally unstable sugar-type compounds that typically hinder the performance of catalytic steam reforming. An average hydrogen yield of 81{\%} was achieved over two hours at relatively mild process conditions: 650 °C, steam-to-carbon ratio of 3.84 and gas hourly space velocity of 5000 h-1. When the reaction temperature was varied between 600 and 750 °C, clear catalyst deactivation was only observed at 600 °C. In theory, by utilizing the one-step fractional condensation scheme and subsequently steam reforming the aqueous pyrolysis oil, sufficient amounts of hydrogen could be generated for significantly deoxygenating the organic pyrolysis oil via catalytic hydrodeoxygenation.",
keywords = "fast pyrolysis, bio-oil, steam reforming, hydrogen",
author = "Ville Paasikallio and Johanna Kihlman and {Sanchez Sanchez}, {Cesar Andres} and Pekka Simell and Yrj{\"o} Solantausta and Juha Lehtonen",
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Steam reforming of pyrolysis oil aqueous fraction obtained by one-step fractional condensation. / Paasikallio, Ville (Corresponding Author); Kihlman, Johanna; Sanchez Sanchez, Cesar Andres; Simell, Pekka; Solantausta, Yrjö; Lehtonen, Juha.

In: International Journal of Hydrogen Energy, Vol. 40, No. 8, 2015, p. 3149-3157.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Steam reforming of pyrolysis oil aqueous fraction obtained by one-step fractional condensation

AU - Paasikallio, Ville

AU - Kihlman, Johanna

AU - Sanchez Sanchez, Cesar Andres

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AU - Solantausta, Yrjö

AU - Lehtonen, Juha

PY - 2015

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N2 - The aqueous fraction of pyrolysis oil, which was produced and fractionally condensed in VTT's 20 kg/h fast pyrolysis Process Development Unit, was successfully steam reformed in a fixed-bed reactor over a commercial nickel catalyst without any additional steam. As a result of the one-step fractionation process, the aqueous pyrolysis oil, which had a water content of 72.7 wt%, contained only limited amounts of thermally unstable sugar-type compounds that typically hinder the performance of catalytic steam reforming. An average hydrogen yield of 81% was achieved over two hours at relatively mild process conditions: 650 °C, steam-to-carbon ratio of 3.84 and gas hourly space velocity of 5000 h-1. When the reaction temperature was varied between 600 and 750 °C, clear catalyst deactivation was only observed at 600 °C. In theory, by utilizing the one-step fractional condensation scheme and subsequently steam reforming the aqueous pyrolysis oil, sufficient amounts of hydrogen could be generated for significantly deoxygenating the organic pyrolysis oil via catalytic hydrodeoxygenation.

AB - The aqueous fraction of pyrolysis oil, which was produced and fractionally condensed in VTT's 20 kg/h fast pyrolysis Process Development Unit, was successfully steam reformed in a fixed-bed reactor over a commercial nickel catalyst without any additional steam. As a result of the one-step fractionation process, the aqueous pyrolysis oil, which had a water content of 72.7 wt%, contained only limited amounts of thermally unstable sugar-type compounds that typically hinder the performance of catalytic steam reforming. An average hydrogen yield of 81% was achieved over two hours at relatively mild process conditions: 650 °C, steam-to-carbon ratio of 3.84 and gas hourly space velocity of 5000 h-1. When the reaction temperature was varied between 600 and 750 °C, clear catalyst deactivation was only observed at 600 °C. In theory, by utilizing the one-step fractional condensation scheme and subsequently steam reforming the aqueous pyrolysis oil, sufficient amounts of hydrogen could be generated for significantly deoxygenating the organic pyrolysis oil via catalytic hydrodeoxygenation.

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