Estimating the Temperature Experienced by Biomass Particles during Fast Pyrolysis Using Microscopic Analysis of Biochars

Thompson, Logan C.; Ciesielski, Peter N.; Jarvis, Mark W.; Mukarakate, Calvin; Nimlos, Mark R.; Donohoe, Bryon S.

doi:10.1021/acs.energyfuels.7b00791

Title: Estimating the Temperature Experienced by Biomass Particles during Fast Pyrolysis Using Microscopic Analysis of Biochars

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Abstract

Here, biomass particles can experience variable thermal conditions during fast pyrolysis due to differences in their size and morphology, and from local temperature variations within a reactor. These differences lead to increased heterogeneity of the chemical products obtained in the pyrolysis vapors and bio-oil. Here we present a simple, high-throughput method to investigate the thermal history experienced by large ensembles of particles during fast pyrolysis by imaging and quantitative image analysis. We present a correlation between the surface luminance (darkness) of the biochar particle and the highest temperature that it experienced during pyrolysis. Next, we apply this correlation to large, heterogeneous ensembles of char particles produced in a laminar entrained flow reactor (LEFR). The results are used to interpret the actual temperature distributions delivered by the reactor over a range of operating conditions.

Authors:

Thompson, Logan C. ^[1];

^[1]; Jarvis, Mark W. ^[1];

^[1];

^[1]

National Renewable Energy Lab. (NREL), Golden, CO (United States)

Publication Date:: Wed Jul 12 00:00:00 EDT 2017

Research Org.:: National Renewable Energy Lab. (NREL), Golden, CO (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Direct Catalytic Conversion of Biomass to Biofuels (C3Bio)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1376661

Report Number(s):: NREL/JA-2700-68941
Journal ID: ISSN 0887-0624

Grant/Contract Number:: AC36-08GO28308

Resource Type:: Accepted Manuscript

Journal Name:: Energy and Fuels

Additional Journal Information:: Journal Volume: 31; Journal Issue: 8; Journal ID: ISSN 0887-0624

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 09 BIOMASS FUELS; biomass; thermal conditions; fast pyrolysis

Citation Formats


                    Thompson, Logan C., Ciesielski, Peter N., Jarvis, Mark W., Mukarakate, Calvin, Nimlos, Mark R., and Donohoe, Bryon S. Estimating the Temperature Experienced by Biomass Particles during Fast Pyrolysis Using Microscopic Analysis of Biochars.  United States: N. p., 2017. 
Web.  doi:10.1021/acs.energyfuels.7b00791.

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                    Thompson, Logan C., Ciesielski, Peter N., Jarvis, Mark W., Mukarakate, Calvin, Nimlos, Mark R., & Donohoe, Bryon S. Estimating the Temperature Experienced by Biomass Particles during Fast Pyrolysis Using Microscopic Analysis of Biochars.  United States.  https://doi.org/10.1021/acs.energyfuels.7b00791

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                    Thompson, Logan C., Ciesielski, Peter N., Jarvis, Mark W., Mukarakate, Calvin, Nimlos, Mark R., and Donohoe, Bryon S. Wed .  
"Estimating the Temperature Experienced by Biomass Particles during Fast Pyrolysis Using Microscopic Analysis of Biochars".  United States.  https://doi.org/10.1021/acs.energyfuels.7b00791.  https://www.osti.gov/servlets/purl/1376661.

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@article{osti_1376661,

  title        = {Estimating the Temperature Experienced by Biomass Particles during Fast Pyrolysis Using Microscopic Analysis of Biochars},

  author       = {Thompson, Logan C. and Ciesielski, Peter N. and Jarvis, Mark W. and Mukarakate, Calvin and Nimlos, Mark R. and Donohoe, Bryon S.},

  abstractNote = {Here, biomass particles can experience variable thermal conditions during fast pyrolysis due to differences in their size and morphology, and from local temperature variations within a reactor. These differences lead to increased heterogeneity of the chemical products obtained in the pyrolysis vapors and bio-oil. Here we present a simple, high-throughput method to investigate the thermal history experienced by large ensembles of particles during fast pyrolysis by imaging and quantitative image analysis. We present a correlation between the surface luminance (darkness) of the biochar particle and the highest temperature that it experienced during pyrolysis. Next, we apply this correlation to large, heterogeneous ensembles of char particles produced in a laminar entrained flow reactor (LEFR). The results are used to interpret the actual temperature distributions delivered by the reactor over a range of operating conditions.},

  doi          = {10.1021/acs.energyfuels.7b00791},

  journal      = {Energy and Fuels},

  number       = 8,

  volume       = 31,

  place        = {United States},

  year         = {Wed Jul 12 00:00:00 EDT 2017},

  month        = {Wed Jul 12 00:00:00 EDT 2017}

}

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