Controlling the water content of biomass fast pyrolysis oil

Roel Johannes Maria Westerhof, N.J.M. Kuipers, Sascha R.A. Kersten, Willibrordus Petrus Maria van Swaaij

Research output: Contribution to journalArticleAcademicpeer-review

98 Citations (Scopus)
1 Downloads (Pure)

Abstract

Several methods to control the water content of pyrolysis oil from fast pyrolysis of biomass were evaluated experimentally. Parameters varied were the operating temperature of the condenser, the gas load of the condenser, and the moisture content of the feedstock. Experiments were performed in a continuous bench scale plant (1 kg/h intake) equipped with a fluidized bed reactor. Pine wood with moisture contents between 0 wt % and 20 wt % (as-received basis) was used as feedstock. The mass balance closure was between 94 wt % and 102 wt %, and the reproducibility of yields of identical experiments was good. Increasing the condenser temperature (15−90 °C) and increasing the gas load (2.0−4.1 kg of gases/kg of vapors in the condenser feed) of the condenser are both well suited to control the water content. However, decreasing the water content by these measures always results in a loss of organic vapors, leading to a lower oil yield in the condenser. Deep drying of the feedstock is beneficial; a lower moisture content of the feed results in less loss of organic vapors for the same water content of pyrolysis oil. Experimental results were compared with the predictions of an equilibrium flash condensation model. Predictions of this equilibrium model are in good agreement with the experimental results. All input parameters of the model (reactor yields and composition of the organics in pyrolysis oil) can be measured, or are known, with sufficient accuracy.
Original languageUndefined
Pages (from-to)9238-9247
Number of pages10
JournalIndustrial and engineering chemistry research
Volume46
Issue number26
DOIs
Publication statusPublished - 2007

Keywords

  • METIS-242754
  • IR-68659

Cite this

@article{f5f059ebb9594f519a453a0646334b8a,
title = "Controlling the water content of biomass fast pyrolysis oil",
abstract = "Several methods to control the water content of pyrolysis oil from fast pyrolysis of biomass were evaluated experimentally. Parameters varied were the operating temperature of the condenser, the gas load of the condenser, and the moisture content of the feedstock. Experiments were performed in a continuous bench scale plant (1 kg/h intake) equipped with a fluidized bed reactor. Pine wood with moisture contents between 0 wt {\%} and 20 wt {\%} (as-received basis) was used as feedstock. The mass balance closure was between 94 wt {\%} and 102 wt {\%}, and the reproducibility of yields of identical experiments was good. Increasing the condenser temperature (15−90 °C) and increasing the gas load (2.0−4.1 kg of gases/kg of vapors in the condenser feed) of the condenser are both well suited to control the water content. However, decreasing the water content by these measures always results in a loss of organic vapors, leading to a lower oil yield in the condenser. Deep drying of the feedstock is beneficial; a lower moisture content of the feed results in less loss of organic vapors for the same water content of pyrolysis oil. Experimental results were compared with the predictions of an equilibrium flash condensation model. Predictions of this equilibrium model are in good agreement with the experimental results. All input parameters of the model (reactor yields and composition of the organics in pyrolysis oil) can be measured, or are known, with sufficient accuracy.",
keywords = "METIS-242754, IR-68659",
author = "Westerhof, {Roel Johannes Maria} and N.J.M. Kuipers and Kersten, {Sascha R.A.} and {van Swaaij}, {Willibrordus Petrus Maria}",
year = "2007",
doi = "10.1021/ie070684k",
language = "Undefined",
volume = "46",
pages = "9238--9247",
journal = "Industrial and engineering chemistry research",
issn = "0888-5885",
publisher = "American Chemical Society",
number = "26",

}

Controlling the water content of biomass fast pyrolysis oil. / Westerhof, Roel Johannes Maria; Kuipers, N.J.M.; Kersten, Sascha R.A.; van Swaaij, Willibrordus Petrus Maria.

In: Industrial and engineering chemistry research, Vol. 46, No. 26, 2007, p. 9238-9247.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Controlling the water content of biomass fast pyrolysis oil

AU - Westerhof, Roel Johannes Maria

AU - Kuipers, N.J.M.

AU - Kersten, Sascha R.A.

AU - van Swaaij, Willibrordus Petrus Maria

PY - 2007

Y1 - 2007

N2 - Several methods to control the water content of pyrolysis oil from fast pyrolysis of biomass were evaluated experimentally. Parameters varied were the operating temperature of the condenser, the gas load of the condenser, and the moisture content of the feedstock. Experiments were performed in a continuous bench scale plant (1 kg/h intake) equipped with a fluidized bed reactor. Pine wood with moisture contents between 0 wt % and 20 wt % (as-received basis) was used as feedstock. The mass balance closure was between 94 wt % and 102 wt %, and the reproducibility of yields of identical experiments was good. Increasing the condenser temperature (15−90 °C) and increasing the gas load (2.0−4.1 kg of gases/kg of vapors in the condenser feed) of the condenser are both well suited to control the water content. However, decreasing the water content by these measures always results in a loss of organic vapors, leading to a lower oil yield in the condenser. Deep drying of the feedstock is beneficial; a lower moisture content of the feed results in less loss of organic vapors for the same water content of pyrolysis oil. Experimental results were compared with the predictions of an equilibrium flash condensation model. Predictions of this equilibrium model are in good agreement with the experimental results. All input parameters of the model (reactor yields and composition of the organics in pyrolysis oil) can be measured, or are known, with sufficient accuracy.

AB - Several methods to control the water content of pyrolysis oil from fast pyrolysis of biomass were evaluated experimentally. Parameters varied were the operating temperature of the condenser, the gas load of the condenser, and the moisture content of the feedstock. Experiments were performed in a continuous bench scale plant (1 kg/h intake) equipped with a fluidized bed reactor. Pine wood with moisture contents between 0 wt % and 20 wt % (as-received basis) was used as feedstock. The mass balance closure was between 94 wt % and 102 wt %, and the reproducibility of yields of identical experiments was good. Increasing the condenser temperature (15−90 °C) and increasing the gas load (2.0−4.1 kg of gases/kg of vapors in the condenser feed) of the condenser are both well suited to control the water content. However, decreasing the water content by these measures always results in a loss of organic vapors, leading to a lower oil yield in the condenser. Deep drying of the feedstock is beneficial; a lower moisture content of the feed results in less loss of organic vapors for the same water content of pyrolysis oil. Experimental results were compared with the predictions of an equilibrium flash condensation model. Predictions of this equilibrium model are in good agreement with the experimental results. All input parameters of the model (reactor yields and composition of the organics in pyrolysis oil) can be measured, or are known, with sufficient accuracy.

KW - METIS-242754

KW - IR-68659

U2 - 10.1021/ie070684k

DO - 10.1021/ie070684k

M3 - Article

VL - 46

SP - 9238

EP - 9247

JO - Industrial and engineering chemistry research

JF - Industrial and engineering chemistry research

SN - 0888-5885

IS - 26

ER -