Kinetics of CO release from bark and medium density fibreboard pyrolysis

Bastiaans, Rjm Rob; Toland, AE; Holten, Apc Ad; Goey, de Lph Philip

doi:10.1016/j.biombioe.2010.01.020

Cited by 8 publications

(2 citation statements)

References 17 publications

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“…The single biomass component competitive scheme, which was first proposed by Shafizadeh and Chin [11], is commonly used for wood pyrolysis modelling in previous studies. For example, Bastiaans et al assumed a single reaction to extract Arrhenius parameters and to estimate CO release from MDF [12]. Additionally, competitive schemes for biomass multi-components (cellulose, hemicellulose, and lignin) have also been proposed by Koufopanos et al [13] and Miller and Bellan [14].…”

Section: Introductionmentioning

confidence: 99%

Kinetic Study on the Pyrolysis of Medium Density Fiberboard: Effects of Secondary Charring Reactions

et al. 2018

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The reaction models employed in the kinetic studies of biomass pyrolysis generally do not include the secondary charring reactions. The aim of this work is to propose an applicable kinetic model to characterize the pyrolysis mechanism of medium density fiberboard (MDF) and to evaluate the effects of secondary charring reactions on estimated products yields. The kinetic study for pyrolysis of MDF was performed by a thermogravimetric analyzer over a heating rate range from 10 to 40 °C/min in a nitrogen atmosphere. Four stages related to the degradation of resin, hemicellulose, cellulose, and lignin could be distinguished from the thermogravimetric analyses (TGA). Based on the four components and multi-component parallel reaction scheme, a kinetic model considering secondary charring reactions was proposed. A comparison model was also provided. An efficient optimization algorithm, differential evolution (DE), was coupled with the two models to determine the kinetic parameters. Comparisons of the results of the two models to experiment showed that the mass fraction (TG) and mass loss rate (DTG) calculated by the model considering secondary charring reactions were in better agreement with the experimental data. Furthermore, higher product yields than the experimental values will be obtained if secondary charring reactions were not considered in the kinetic study of MDF pyrolysis. On the contrary, with the consideration of secondary charring reactions, the estimated product yield had little error with the experimental data.

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Section: Introductionmentioning

confidence: 99%

Kinetic Study on the Pyrolysis of Medium Density Fiberboard: Effects of Secondary Charring Reactions

et al. 2018

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“…Heated grid reactors have been extensively used in the last 40 years to study the fast devolatilization of coals ,, and, more recently, of biomass structures and samples. ,− …”

Section: Introductionmentioning

confidence: 99%

Characterization of Fast Pyrolysis of Dry Distiller’s Grains (DDGS) and Palm Kernel Cake Using a Heated Foil Reactor: Nitrogen Chemistry and Basic Reactor Modeling

Giuntoli

Gout

Verkooijen

et al. 2011

Ind. Eng. Chem. Res.

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In this paper, two residues of liquid biofuels production were tested: dry distiller’s grains with solubles and palm kernel cake. The fuels were tested in a heated foil reactor inserted in a Fourier Transform Infrared spectrometer under fast pyrolysis conditions: a heating rate of 600 °C/s and final temperatures ranging from 500 to 1300 °C. The fuels were also pretreated by water leaching to remove water-soluble inorganic compounds. A numerical model of the unloaded system was developed to gain better insight into the temperature and velocity profiles in the reactor and on the foil. The model allowed the detection of zones of high temperature and low velocity around the hot foil, indicating that secondary reactions are likely. Moreover, temperature validation with an InfraRed pyrometer indicated that the temperature measured by the control thermocouple is on average about 15% (in °C) lower than the actual foil temperature. The product composition and final yields of volatile species were measured at different final temperatures. The main volatile species was CO2 for temperatures lower than 1000 °C. At higher temperatures CO became the most abundant volatile species, likely because of tar cracking. HCN resulted to be the main volatile-N compound for all samples at all temperatures, while NH3 was detected in minor amounts. The mechanism of decomposition of proteins seems to have changed from deamination, at slow heating rates, to dehydration, followed by the formation of cyclic amides. These structures were released as tar-N and subsequently decomposed into HCN and NH3. The effect of the leaching was not relevant for weight loss and main species release, but it appeared to enhance tar-N decomposition for the DDGS sample.

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Plate reactor as an analysis tool for rapid pyrolysis of biomass

Sepman

Goey

2011

Biomass and Bioenergy

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Kinetics of CO release from bark and medium density fibreboard pyrolysis

Cited by 8 publications

References 17 publications

Kinetic Study on the Pyrolysis of Medium Density Fiberboard: Effects of Secondary Charring Reactions

Kinetic Study on the Pyrolysis of Medium Density Fiberboard: Effects of Secondary Charring Reactions

Characterization of Fast Pyrolysis of Dry Distiller’s Grains (DDGS) and Palm Kernel Cake Using a Heated Foil Reactor: Nitrogen Chemistry and Basic Reactor Modeling

Plate reactor as an analysis tool for rapid pyrolysis of biomass

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