Crumbles

Flowability of Crumbler Rotary Shear Size-Reduced Granular Biomass: An Experiment-Informed Modeling Study on the Angle of Repose

/ Publications, Comminution, Crumbler, Crumbles, Forest Concepts Bioenergy, Forest Concepts Research & Development

Abstract Biomass has potential as a carbon-neutral alternative to petroleum for chemical and energy products. However, complete replacement of fossil fuel is contingent upon efficient processes to eliminate undesirable characteristics of biomass, e.g., low bulk density, variability, and storage-induced quality problems. Mechanical size reduction via comminution is a processing operation to engineer favorable biomass flowability […]

Flowability of Crumbler Rotary Shear Size-Reduced Granular Biomass: An Experiment-Informed Modeling Study on the Angle of Repose Read More »

Measurement of Transport Properties of Woody Biomass Feedstock Particles Before and After Pyrolysis by Numerical Analysis of X-Ray Tomographic Reconstructions

/ Publications, Comminution, Crumbler, Crumbles, Forest Concepts Bioenergy, Forest Concepts Research & Development

Abstract Lignocellulosic biomass has a complex, species-specific microstructure that governs heat and mass transport during conversion processes. A quantitative understanding of the evolution of pore size and structure is critical to optimize conversion processes for biofuel and bio-based chemical production. Further, improving our understanding of the microstructure of biochar coproduct will accelerate development of its

Measurement of Transport Properties of Woody Biomass Feedstock Particles Before and After Pyrolysis by Numerical Analysis of X-Ray Tomographic Reconstructions Read More »

Investigation of Cutter-Woodchip Contact Pressure in a New Biomass Comminution System

/ Publications, Comminution, Crumbler, Crumbles

Abstract A Crumbler® rotary shear system was recently developed to process fuel-grade woodchips into feedstocks having more uniform particle sizes for improved flowability and higher thermochemical output yield than a traditional hammer mill. It represents a significant innovation in the state of the art of biomass comminution equipment. However, the milling unit has experienced significant

Investigation of Cutter-Woodchip Contact Pressure in a New Biomass Comminution System Read More »

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

/ 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

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