Publications - Forest Concepts

Preprocessing Reactor-Ready Feedstocks for Thermochemical Conversion

August 3, 2020 / Publications

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

July 29, 2020 / Publications

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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Design of a Biomass Scale Cubical Triaxial Tester

July 27, 2020 / Publications

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

July 8, 2020 / Crumbler, Publications

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

February 28, 2019 / Publications, Crumbler

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

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

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

January 15, 2019 / Baling, Publications

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

June 30, 2018 / Baling, Publications

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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Production of corn stover feedstocks using rotary shear mill and screen system

March 28, 2018 / Publications, Comminution, Crumbler, Crumbles, Forest Concepts Bioenergy

Abstract Baled corn stover at 10% +/- moisture (wet-basis) was comminuted and sorted to obtain a particle size with a geometric mean diameter (Xgm) of 1.34 mm and particle size distribution to match the Idaho National Laboratory (INL) feedstock used to produce densified corn stover pellets for this project. Comminution (milling) was performed using four

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Work Element Time Study of a Prototype for Baling Forest Residual Biomass into Large Rectangular Bales

January 15, 2018 / Baling, Publications

Abstract The productivity of forest biomass collection equipment is highly dependent on site conditions, spatial distribution of biomass, operator skill, and functional design of the equipment used. A prototype woody biomass baler was used to produce large rectangular bales of woody biomass. Rectangular bales enable high payloads during transport and efficient storage at centralized processing

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Conceptual Specification of Forest Utility Balers for Woody Biomass

July 20, 2016 / Baling, Publications

Abstract The forest utility modular woody biomass baler is designed to maximize recovery of forest residuals from small/remote/stranded landings, scattered roadside windrows and piles, thinnings from hand crews, and forest management prunings. The baler module is designed to be incorporated onto a wide range of undercarriages and prime movers. The baler module can be mounted

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