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Contact pressure analysis to allow improved design for the clearing plate in a biomass comminution system

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Abstract

For biomass processing systems, feedstocks with small but equal sizes can improve flowability and thermochemical outputs. The Crumbler rotary shear system was designed to achieve such ideal feedstocks to reduce costs and energy throughout the biomass supply chain. Improving the wear resistance of major components in this system is important to decrease the cost. Accelerating the feedstock flow through the rotary shear machine plays an equivalent role of improving its efficiency. An analytical analysis and a finite-element analysis of the stationary clearing plate are presented in this work. These tools are used to investigate the effect of contact surface curvature on the impact pressure. The optimized new clearing plate design is expected to improve the component’s lifetime and wood chips flowability. The field tests confirm that the trend of the new clearing plate design guided by FEA. The optimization method, model verification, and validation experience applied in this work can also be applied to other static components with similar simple contact wear problems.

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Acknowledgements

This research was sponsored by the Feedstock Conversion Interface Consortium of the US Department of Energy Office of Energy Efficiency and Renewable Energy, Bioenergy Technologies Office. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Funding

This research was sponsored by the Feedstock Conversion Interface Consortium of the US Department of Energy Office of Energy Efficiency and Renewable Energy, Bioenergy Technologies Office.

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Authors and Affiliations

  1. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA

    Lianshan Lin, James R. Keiser & Jun Qu

  2. Forest Concepts, 3320 West Valley Highway N., D110, Auburn, WA, 98001, USA

    Chris McKiernan & David Lanning

Authors
  1. Lianshan Lin
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  2. Chris McKiernan
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  3. David Lanning
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  4. James R. Keiser
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  5. Jun Qu
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Contributions

L. L.: conceptualization, methodology, investigation, formal analysis, writing: original draft.

C. M.: investigation, writing: review and editing.

D. L.: validation, investigation, writing: review and editing.

J. K.: conceptualization, writing: review and editing.

J. Q.: conceptualization, methodology, resources, investigation, project administration, supervision, funding acquisition, writing: review and editing.

Corresponding authors

Correspondence to Lianshan Lin or Jun Qu.

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The authors declare no competing interests.

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Lin, L., McKiernan, C., Lanning, D. et al. Contact pressure analysis to allow improved design for the clearing plate in a biomass comminution system. Biomass Conv. Bioref. (2023). https://doi.org/10.1007/s13399-023-04805-6

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  • DOI: https://doi.org/10.1007/s13399-023-04805-6

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