Publications

Finite Element Modeling of Biomass Hopper Flow

Finite Element Modeling of Biomass Hopper Flow

Abstract  This presentation was given by Forest Concepts’ collaborator Pennsylvania State University and lead by Hojae Yi. Biomass flowability is the result of interactions between physical properties of bulk biomass and handling equipment. An appropriate biomass flowability model should be able to account for the material properties and equipment characteristics in tandem. Therefore, the computational …

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Biomass Flow Characterization through CTT

Biomass Flow Mechanical Properties Characterization

Abstract  This presentation was given by Forest Concepts’ collaborator Pennsylvania State University and lead by Hojae Yi. Unreliable handling of biomass is widely observed in plants using milled biomass. Flow behavior of bulk solids is a manifestation of mechanical interactions between the particulate material and handling equipment.  Overall, the current issue of unreliable biomass handling …

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Innovations in Biomass Pretreatment

Innovations in Biomass Pretreatment

Abstract  In this 11-minute presentation, Forest Concepts Chief Technology Officer Jim Dooley shares key innovations in biomass pretreatment.  These innovations have been made possible through a key funding partnership with the DOE. The objectives of the work at Forest Concepts have been to maximize feedstock flowability during handling, create feedstock attributes that maximize conversion yield, reduce …

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Reactor Ready Feedstocks for Thermochemical Conversion

Preprocessing Reactor-Ready Feedstocks for Thermochemical Conversion

Abstract  In this 15-minute presentation, Forest Concepts Senior Engineer David Lanning discusses the Techno-Economic Analysis (“TEA”) on the Crumbler® rotary shear system completed in partnership with Idaho National Laboratory. The project compared the feedstock preprocessing pathways of the Crumbler® system and a hammermill.  Lanning shares the resulting advantages the TEA revealed for the Crumbler® shear, …

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Cubical Triaxial Tester Biomass Handling Measurement

Overview of DOE Flowability Measurement and Modeling Project at Forest Concepts and Penn State University

Abstract  New and improved laboratory equipment to measure biomass physical, mechanical, and flowability properties are being developed to prototype stage within this project. Improved analytical models and simulation tools are being developed to improve the design of biomass handling unit operations such as hoppers, chutes, feeders, and the like. The objective of the project is …

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CTT Design

Design of a Biomass Scale Cubical Triaxial Tester

Abstract  The bioenergy industry is dependent on predictable and reliable feedstock handling equipment. High profile failures in the industry demonstrate the need for better modeling tools for feedstock handling, specifically tools which can model the bulk flow of biomass feedstock materials in handling equipment such as hoppers or screw conveyors. Measurement of bulk material flow …

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Crumbler Waste to Energy Presentation

Application of Crumbler® Technology to Recovered Plastics and MSW for Chemical Recycling and Waste to Energy

Abstract  Crumbler® rotary-shear technology from Forest Concepts is the solution to produce high quality feedstocks. This short presentation explains some of our emerging work in applying this patent-protected technology to recovered plastics and MSW for chemical recycling and waste to energy.  About the Publication  Dooley, J. H. (2020).  Auburn, WA, Forest Concepts, LLC. Read the …

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Two Crumbler Modules in a Tower Arrangement

Techno-Economic Analysis of Forest Concepts, LLC Crumbler® Operated at Proton Power to Process Crumbles® from Hardwood Chips

Abstract  Developing cost-effective methods for processing biomass into an economic biofuel product is critical to the success for the bioenergy industry in the United States. Size reduction and drying of the material, where used, are two of the most costly and energy-intensive operations that are undertaken during preprocessing. Reducing the energy required during these two …

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Baling & Roundwood Hauling for Fireline and WUI Fuels Reduction Woody Biomass: Alternative to on-site Chipping

Baling & Roundwood Hauling for Fireline and WUI Fuels Reduction Woody Biomass

Abstract  In this 17-slide Powerpoint presentation, Jim Dooley explores the challenges of on-site chipping of fireline debris and woody biomass and proposes Forest Concepts’ patent-protected baling technology as a solution.  The presentation covers potential benefits such as labor and cost reduction. In addition, depictions of applications at test sites are included. About the Publication  Dooley, …

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Baler Testing

Moisture Content of Baled Forest and Urban Woody Biomass During Long-Term Open Storage

Abstract This article describes how the moisture content of baled woody biomass varied during long-term open-air storage under conditions in the Pacific Northwest region of the United States. Large rectangular bales of forest and urban biomass were produced beginning in August 2015 and periodically until June 2016. Weights were measured approximately monthly until the entire …

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