Aerodynamic and physical characterization of refuse derived fuel

Mohammadhadi Nakhaei*, Morten Nedergaard Pedersen, Hao Wu, Lars Skaarup Jensen, Peter Glarborg, Peter Arendt Jensen, Damien Grévain, Kim Dam-Johansen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Physical and aerodynamic characteristics of several refuse derived fuel (RDF) samples were studied. Each RDF sample was tested in a wind sieve to classify the particles into different fractions according to their terminal velocity. The individual particles from the wind sieve were then manually separated according to the material type and physically characterized by weight measurement and 2D photographing. For the tested samples, despite the overall weight distribution of the fractions from the wind sieve was similar, the material distribution of particles in each fraction was significantly different. It has been shown that regardless of the particle material, for each group of particles from the wind sieve test, the ratio of particle maximum projected area to particle mass lies in a narrow range. A new approach based on the particle maximum projected area was proposed to predict the terminal velocity of particles and was tested for each group of particles from the wind sieve experiment. The maximum deviation of the mass-based averaged terminal velocity predicted from the drag model compared to the mid-point wind sieve velocity was smaller than 14%. A procedure was proposed for physical characterization of RDF particles based on the wind sieve test and 2D imaging of particles. This characterization can be used as an input for Computational Fluid Dynamics (CFD) calculations of RDF-fired cement calciners and rotary kilns.
Original languageEnglish
JournalEnergy and Fuels
Volume32
Issue number7
Pages (from-to)7685-7700
ISSN0887-0624
DOIs
Publication statusPublished - 2018

Cite this

Nakhaei, Mohammadhadi ; Pedersen, Morten Nedergaard ; Wu, Hao ; Jensen, Lars Skaarup ; Glarborg, Peter ; Jensen, Peter Arendt ; Grévain, Damien ; Dam-Johansen, Kim. / Aerodynamic and physical characterization of refuse derived fuel. In: Energy and Fuels. 2018 ; Vol. 32, No. 7. pp. 7685-7700.
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title = "Aerodynamic and physical characterization of refuse derived fuel",
abstract = "Physical and aerodynamic characteristics of several refuse derived fuel (RDF) samples were studied. Each RDF sample was tested in a wind sieve to classify the particles into different fractions according to their terminal velocity. The individual particles from the wind sieve were then manually separated according to the material type and physically characterized by weight measurement and 2D photographing. For the tested samples, despite the overall weight distribution of the fractions from the wind sieve was similar, the material distribution of particles in each fraction was significantly different. It has been shown that regardless of the particle material, for each group of particles from the wind sieve test, the ratio of particle maximum projected area to particle mass lies in a narrow range. A new approach based on the particle maximum projected area was proposed to predict the terminal velocity of particles and was tested for each group of particles from the wind sieve experiment. The maximum deviation of the mass-based averaged terminal velocity predicted from the drag model compared to the mid-point wind sieve velocity was smaller than 14{\%}. A procedure was proposed for physical characterization of RDF particles based on the wind sieve test and 2D imaging of particles. This characterization can be used as an input for Computational Fluid Dynamics (CFD) calculations of RDF-fired cement calciners and rotary kilns.",
author = "Mohammadhadi Nakhaei and Pedersen, {Morten Nedergaard} and Hao Wu and Jensen, {Lars Skaarup} and Peter Glarborg and Jensen, {Peter Arendt} and Damien Gr{\'e}vain and Kim Dam-Johansen",
year = "2018",
doi = "10.1021/acs.energyfuels.8b01359",
language = "English",
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Aerodynamic and physical characterization of refuse derived fuel. / Nakhaei, Mohammadhadi; Pedersen, Morten Nedergaard; Wu, Hao; Jensen, Lars Skaarup; Glarborg, Peter; Jensen, Peter Arendt; Grévain, Damien; Dam-Johansen, Kim.

In: Energy and Fuels, Vol. 32, No. 7, 2018, p. 7685-7700.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Aerodynamic and physical characterization of refuse derived fuel

AU - Nakhaei, Mohammadhadi

AU - Pedersen, Morten Nedergaard

AU - Wu, Hao

AU - Jensen, Lars Skaarup

AU - Glarborg, Peter

AU - Jensen, Peter Arendt

AU - Grévain, Damien

AU - Dam-Johansen, Kim

PY - 2018

Y1 - 2018

N2 - Physical and aerodynamic characteristics of several refuse derived fuel (RDF) samples were studied. Each RDF sample was tested in a wind sieve to classify the particles into different fractions according to their terminal velocity. The individual particles from the wind sieve were then manually separated according to the material type and physically characterized by weight measurement and 2D photographing. For the tested samples, despite the overall weight distribution of the fractions from the wind sieve was similar, the material distribution of particles in each fraction was significantly different. It has been shown that regardless of the particle material, for each group of particles from the wind sieve test, the ratio of particle maximum projected area to particle mass lies in a narrow range. A new approach based on the particle maximum projected area was proposed to predict the terminal velocity of particles and was tested for each group of particles from the wind sieve experiment. The maximum deviation of the mass-based averaged terminal velocity predicted from the drag model compared to the mid-point wind sieve velocity was smaller than 14%. A procedure was proposed for physical characterization of RDF particles based on the wind sieve test and 2D imaging of particles. This characterization can be used as an input for Computational Fluid Dynamics (CFD) calculations of RDF-fired cement calciners and rotary kilns.

AB - Physical and aerodynamic characteristics of several refuse derived fuel (RDF) samples were studied. Each RDF sample was tested in a wind sieve to classify the particles into different fractions according to their terminal velocity. The individual particles from the wind sieve were then manually separated according to the material type and physically characterized by weight measurement and 2D photographing. For the tested samples, despite the overall weight distribution of the fractions from the wind sieve was similar, the material distribution of particles in each fraction was significantly different. It has been shown that regardless of the particle material, for each group of particles from the wind sieve test, the ratio of particle maximum projected area to particle mass lies in a narrow range. A new approach based on the particle maximum projected area was proposed to predict the terminal velocity of particles and was tested for each group of particles from the wind sieve experiment. The maximum deviation of the mass-based averaged terminal velocity predicted from the drag model compared to the mid-point wind sieve velocity was smaller than 14%. A procedure was proposed for physical characterization of RDF particles based on the wind sieve test and 2D imaging of particles. This characterization can be used as an input for Computational Fluid Dynamics (CFD) calculations of RDF-fired cement calciners and rotary kilns.

U2 - 10.1021/acs.energyfuels.8b01359

DO - 10.1021/acs.energyfuels.8b01359

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VL - 32

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