Combustion kinetics of char obtained by flash pyrolysis of pine wood

A.M.C. Janse, Arthur M.C. Janse, Harald G. de Jonge, W. Prins, Willibrordus Petrus Maria van Swaaij

Research output: Contribution to journalArticleAcademicpeer-review

69 Citations (Scopus)
348 Downloads (Pure)

Abstract

The combustion kinetics of rapidly pyrolyzed wood have been investigated within the temperature range of 573−773 K and the oxygen concentration range of 2.25−36 vol %. These kinetics are, for instance, required for the design of a char combustion section in an integrated flash pyrolysis pilot plant. Two different experimental techniques were used: a standard thermogravimetrical technique (TGA) and flue gas analysis after combustion in a diluted packed bed. The pyrolysis char was prepared in a small screen heater reactor, enabling heating rates of over 300 K/s. The results of the TGA and the packed-bed measurements are in good agreement for temperatures above 648 K. Below that temperature, the reaction rate observed in the TGA appears to be (up to 1.5 times) lower than that in the packed-bed reactor. The combustion kinetics can be described by the following simple rate equation which has an average deviation of 20%: r = 5.3 × 105e-125×103/RTPO20.53(1 − X)0.49. Several pore models reported in the literature were tested against the experimental data, but they could not improve the accuracy of the fit. In comparison with available data, this specific type of char shows a notably higher rate of combustion.
Original languageEnglish
Pages (from-to)3909-3919
Number of pages11
JournalIndustrial and engineering chemistry research
Volume37
Issue number10
DOIs
Publication statusPublished - 1998

Fingerprint

Wood
Pyrolysis
Packed beds
Kinetics
Gas fuel analysis
Heating rate
Pilot plants
Flue gases
Temperature
Reaction rates
Oxygen

Keywords

  • METIS-105783
  • IR-68637

Cite this

Janse, A.M.C. ; Janse, Arthur M.C. ; de Jonge, Harald G. ; Prins, W. ; van Swaaij, Willibrordus Petrus Maria. / Combustion kinetics of char obtained by flash pyrolysis of pine wood. In: Industrial and engineering chemistry research. 1998 ; Vol. 37, No. 10. pp. 3909-3919.
@article{0347d4464f96465b9dbf426bc01ebe8a,
title = "Combustion kinetics of char obtained by flash pyrolysis of pine wood",
abstract = "The combustion kinetics of rapidly pyrolyzed wood have been investigated within the temperature range of 573−773 K and the oxygen concentration range of 2.25−36 vol {\%}. These kinetics are, for instance, required for the design of a char combustion section in an integrated flash pyrolysis pilot plant. Two different experimental techniques were used: a standard thermogravimetrical technique (TGA) and flue gas analysis after combustion in a diluted packed bed. The pyrolysis char was prepared in a small screen heater reactor, enabling heating rates of over 300 K/s. The results of the TGA and the packed-bed measurements are in good agreement for temperatures above 648 K. Below that temperature, the reaction rate observed in the TGA appears to be (up to 1.5 times) lower than that in the packed-bed reactor. The combustion kinetics can be described by the following simple rate equation which has an average deviation of 20{\%}: r = 5.3 × 105e-125×103/RTPO20.53(1 − X)0.49. Several pore models reported in the literature were tested against the experimental data, but they could not improve the accuracy of the fit. In comparison with available data, this specific type of char shows a notably higher rate of combustion.",
keywords = "METIS-105783, IR-68637",
author = "A.M.C. Janse and Janse, {Arthur M.C.} and {de Jonge}, {Harald G.} and W. Prins and {van Swaaij}, {Willibrordus Petrus Maria}",
year = "1998",
doi = "10.1021/ie970705i",
language = "English",
volume = "37",
pages = "3909--3919",
journal = "Industrial and engineering chemistry research",
issn = "0888-5885",
publisher = "American Chemical Society",
number = "10",

}

Combustion kinetics of char obtained by flash pyrolysis of pine wood. / Janse, A.M.C.; Janse, Arthur M.C.; de Jonge, Harald G.; Prins, W.; van Swaaij, Willibrordus Petrus Maria.

In: Industrial and engineering chemistry research, Vol. 37, No. 10, 1998, p. 3909-3919.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Combustion kinetics of char obtained by flash pyrolysis of pine wood

AU - Janse, A.M.C.

AU - Janse, Arthur M.C.

AU - de Jonge, Harald G.

AU - Prins, W.

AU - van Swaaij, Willibrordus Petrus Maria

PY - 1998

Y1 - 1998

N2 - The combustion kinetics of rapidly pyrolyzed wood have been investigated within the temperature range of 573−773 K and the oxygen concentration range of 2.25−36 vol %. These kinetics are, for instance, required for the design of a char combustion section in an integrated flash pyrolysis pilot plant. Two different experimental techniques were used: a standard thermogravimetrical technique (TGA) and flue gas analysis after combustion in a diluted packed bed. The pyrolysis char was prepared in a small screen heater reactor, enabling heating rates of over 300 K/s. The results of the TGA and the packed-bed measurements are in good agreement for temperatures above 648 K. Below that temperature, the reaction rate observed in the TGA appears to be (up to 1.5 times) lower than that in the packed-bed reactor. The combustion kinetics can be described by the following simple rate equation which has an average deviation of 20%: r = 5.3 × 105e-125×103/RTPO20.53(1 − X)0.49. Several pore models reported in the literature were tested against the experimental data, but they could not improve the accuracy of the fit. In comparison with available data, this specific type of char shows a notably higher rate of combustion.

AB - The combustion kinetics of rapidly pyrolyzed wood have been investigated within the temperature range of 573−773 K and the oxygen concentration range of 2.25−36 vol %. These kinetics are, for instance, required for the design of a char combustion section in an integrated flash pyrolysis pilot plant. Two different experimental techniques were used: a standard thermogravimetrical technique (TGA) and flue gas analysis after combustion in a diluted packed bed. The pyrolysis char was prepared in a small screen heater reactor, enabling heating rates of over 300 K/s. The results of the TGA and the packed-bed measurements are in good agreement for temperatures above 648 K. Below that temperature, the reaction rate observed in the TGA appears to be (up to 1.5 times) lower than that in the packed-bed reactor. The combustion kinetics can be described by the following simple rate equation which has an average deviation of 20%: r = 5.3 × 105e-125×103/RTPO20.53(1 − X)0.49. Several pore models reported in the literature were tested against the experimental data, but they could not improve the accuracy of the fit. In comparison with available data, this specific type of char shows a notably higher rate of combustion.

KW - METIS-105783

KW - IR-68637

U2 - 10.1021/ie970705i

DO - 10.1021/ie970705i

M3 - Article

VL - 37

SP - 3909

EP - 3919

JO - Industrial and engineering chemistry research

JF - Industrial and engineering chemistry research

SN - 0888-5885

IS - 10

ER -