Size, shape and flow characterization of ground wood chip and ground wood pellet particles

Rezaei, Hamid; Lim, C. Jim; Lau, Anthony; Sokhansanj, Shahab

doi:10.1016/j.powtec.2016.07.016

Title: Size, shape and flow characterization of ground wood chip and ground wood pellet particles

Abstract

Size, shape and density of biomass particles influence their transportation, fluidization, rates of drying and thermal decomposition. Pelleting wood particles increases the particle density and reduces the variability of physical properties among biomass particles. In this study, pine chips prepared for pulping and commercially produced pine pellets were ground in a hammer mill using grinder screens of 3.2, 6.3, 12.7 and 25.4mmperforations. Pellets consumed about 7 times lower specific grinding energy than chips to produce the same size of particles. Grinding pellets produced the smaller particles with narrower size distribution than grinding chips. Derived shape factors in digital image analysis showed that chip particles were rectangular and had the aspect ratios about one third of pellet particles. Pellet particles were more circular shape. The mechanical sieving underestimated the actual particle size and did not represent the size of particles correctly. Instead, digital imaging is preferred. Angle of repose and compressibility tests represented the flow properties of ground particles. Pellet particles made a less compacted bulk, had lower cohesion and did flow easier in a pile of particles. In conclusion, particle shape affected the flow properties more than particle size

Authors:

Rezaei, Hamid ^[1]; Lim, C. Jim ^[1]; Lau, Anthony ^[1]; Sokhansanj, Shahab ^[2]

Univ. of British Columbia, Vancouver, BC (Canada)
Univ. of British Columbia, Vancouver, BC (Canada); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: 2016-07-11

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1328338

Alternate Identifier(s):: OSTI ID: 1406931

Grant/Contract Number:: AC05-00OR22725; 11R08764

Resource Type:: Accepted Manuscript

Journal Name:: Powder Technology

Additional Journal Information:: Journal Volume: 301; Journal Issue: C; Journal ID: ISSN 0032-5910

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 09 BIOMASS FUELS; size; shape; flowability; shape factor; ground chip; ground pellet

Citation Formats


                    Rezaei, Hamid, Lim, C. Jim, Lau, Anthony, and Sokhansanj, Shahab. Size, shape and flow characterization of ground wood chip and ground wood pellet particles.  United States: N. p., 2016. 
Web.  doi:10.1016/j.powtec.2016.07.016.

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                    Rezaei, Hamid, Lim, C. Jim, Lau, Anthony, & Sokhansanj, Shahab. Size, shape and flow characterization of ground wood chip and ground wood pellet particles.  United States.  https://doi.org/10.1016/j.powtec.2016.07.016

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                    Rezaei, Hamid, Lim, C. Jim, Lau, Anthony, and Sokhansanj, Shahab. Mon .  
"Size, shape and flow characterization of ground wood chip and ground wood pellet particles".  United States.  https://doi.org/10.1016/j.powtec.2016.07.016.  https://www.osti.gov/servlets/purl/1328338.

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@article{osti_1328338,

  title        = {Size, shape and flow characterization of ground wood chip and ground wood pellet particles},

  author       = {Rezaei, Hamid and Lim, C. Jim and Lau, Anthony and Sokhansanj, Shahab},

  abstractNote = {Size, shape and density of biomass particles influence their transportation, fluidization, rates of drying and thermal decomposition. Pelleting wood particles increases the particle density and reduces the variability of physical properties among biomass particles. In this study, pine chips prepared for pulping and commercially produced pine pellets were ground in a hammer mill using grinder screens of 3.2, 6.3, 12.7 and 25.4mmperforations. Pellets consumed about 7 times lower specific grinding energy than chips to produce the same size of particles. Grinding pellets produced the smaller particles with narrower size distribution than grinding chips. Derived shape factors in digital image analysis showed that chip particles were rectangular and had the aspect ratios about one third of pellet particles. Pellet particles were more circular shape. The mechanical sieving underestimated the actual particle size and did not represent the size of particles correctly. Instead, digital imaging is preferred. Angle of repose and compressibility tests represented the flow properties of ground particles. Pellet particles made a less compacted bulk, had lower cohesion and did flow easier in a pile of particles. In conclusion, particle shape affected the flow properties more than particle size},

  doi          = {10.1016/j.powtec.2016.07.016},

  journal      = {Powder Technology},

  number       = C,

  volume       = 301,

  place        = {United States},

  year         = {2016},

  month        = {7}

}

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https://doi.org/10.1016/j.powtec.2016.07.016

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Title: Size, shape and flow characterization of ground wood chip and ground wood pellet particles

Abstract

Citation Formats

Aromatic Production from Catalytic Fast Pyrolysis of Biomass-Derived Feedstocks journal, January 2009

Size and structural characterization of lignin-cellulosic fuels after the rapid devolatilization journal, February 2008

Flow properties and arching behavior of biomass particulate solids journal, February 2013

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SO2-catalyzed steam pretreatment enhances the strength and stability of softwood pellets journal, February 2013

Pyrolysis and gasification of pellets from sugar cane bagasse and wood journal, July 2006

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Effects of temperature and particle size on bio-char yield from pyrolysis of agricultural residues journal, November 2004

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A review on bio-oil production from biomass by using pyrolysis method journal, October 2012

Effects of Heating rate and Particle size on the Products Yields from Rapid Pyrolysis of Beech-Wood journal, April 1996

The continuous flash pyrolysis of biomass journal, June 1984

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Sieveless particle size distribution analysis of particulate materials through computer vision journal, May 2009

Physical Properties for Flow Characterization of Ground Biomass from Douglas Fir Wood journal, May 2013

GRADISTAT: a grain size distribution and statistics package for the analysis of unconsolidated sediments journal, September 2001

Particle and handling characteristics of wood fuel powder: effects of different mills journal, April 2002

Machine vision based particle size and size distribution determination of airborne dust particles of wood and bark pellets journal, December 2009

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Physical properties of solid biomass journal, May 2011

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Theoretical and experimental investigation on angle of repose of biomass–coal blends journal, January 2014

Study of flow characteristics of biomass and biomass–coal blends journal, February 2015

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Gasification of Woody Biomass journal, July 2015

Characterization of powder flowability using measurement of angle of repose journal, July 2006

Characterisation of dry powders journal, March 2009

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Aromatic Production from Catalytic Fast Pyrolysis of Biomass-Derived Feedstocks
journal, January 2009

Size and structural characterization of lignin-cellulosic fuels after the rapid devolatilization
journal, February 2008

Flow properties and arching behavior of biomass particulate solids
journal, February 2013

Internal particle size distribution of biofuel pellets
journal, March 2011

SO2-catalyzed steam pretreatment enhances the strength and stability of softwood pellets
journal, February 2013

Pyrolysis and gasification of pellets from sugar cane bagasse and wood
journal, July 2006

Fast pyrolysis processes for biomass
journal, March 2000

Effects of temperature and particle size on bio-char yield from pyrolysis of agricultural residues
journal, November 2004

Overview of Applications of Biomass Fast Pyrolysis Oil
journal, March 2004

Review of fast pyrolysis of biomass and product upgrading
journal, March 2012

A review on bio-oil production from biomass by using pyrolysis method
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Effects of Heating rate and Particle size on the Products Yields from Rapid Pyrolysis of Beech-Wood
journal, April 1996

The continuous flash pyrolysis of biomass
journal, June 1984

Biomass-coal co-combustion: opportunity for affordable renewable energy
journal, July 2005

Bulk Density of Wet and Dry Wheat Straw and Switchgrass Particles
journal, January 2008

Sieveless particle size distribution analysis of particulate materials through computer vision
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Physical Properties for Flow Characterization of Ground Biomass from Douglas Fir Wood
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GRADISTAT: a grain size distribution and statistics package for the analysis of unconsolidated sediments
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Particle and handling characteristics of wood fuel powder: effects of different mills
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Machine vision based particle size and size distribution determination of airborne dust particles of wood and bark pellets
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Theoretical and experimental investigation on angle of repose of biomass–coal blends
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Study of flow characteristics of biomass and biomass–coal blends
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Effect of granular shape on angle of internal friction of binary granular system
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