Handling behavior of two milled biomass: SRF poplar and corn stover

Gil, Miguel; Schott, Dingena L.; Arauzo, Inmaculada; Teruel, Enrique

doi:10.1016/j.fuproc.2013.02.024

Cited by 61 publications

(46 citation statements)

References 30 publications

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“…Overall, the flow indices (ff c ) for the ground feedstocks in this study agree with previously reported ff c values for ground biomass species, which typically range from the easy flowing to cohesive regimes [39,40,41]. Milled biomass materials, due to their larger particle sizes and aspect ratios (which can lead to more frequent interparticle entanglements), are usually less flowable than ground biomass, with ff c values commonly in the cohesive to very cohesive regimes [35,42].…”

Section: Shear Testingsupporting

confidence: 88%

Evaluating the pelletization of “pure” and blended lignocellulosic biomass feedstocks

Crawford

Ray

Yancey

et al. 2015

Fuel Processing Technology

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Due to its low density and poor flowability, raw biomass may not be an economically viable feedstock for the production of biofuels. However, mechanical densification can be employed to improve its viability. In this study, the flow properties (compressibility, shear, and wall friction) of "pure" feedstocks (corn stover, hybrid poplar, switchgrass and Miscanthus), and feedstock blends, are investigated and compared to measured pelleting energy consumption values. As anticipated, the more compressible materials required lower pelletization energies. Conversely, the less flowable feedstocks (i.e., the materials with higher cohesion and yield strength) were less energy intensive to pellet. In addition, the flowability parameters of the blended materials could be predicted by averaging the measured flow parameters of their pure feedstock constituents. Therefore, only the flow characteristics of the pure feedstocks need to be directly measured, while the flowability of a blended feedstock with a known blend ratio can be accurately inferred. A model was also developed to calculate the required pressure to pellet a particular feedstock, pure or blended, based on its flowability parameters (namely compressibility and wall friction). Strong correlation was observed between the measured pelleting energy consumption and the predicted pelleting pressure values. This newly developed model allows for a material's pelleting feasibility to be assessed without having to physically pelletize the material.Published by Elsevier B.V.

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Section: Shear Testingsupporting

confidence: 88%

Evaluating the pelletization of “pure” and blended lignocellulosic biomass feedstocks

Crawford

Ray

Yancey

et al. 2015

Fuel Processing Technology

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“…Paulrud et al [2] found that tendency to bridge was a combined effect between particle size and shape for wood powder (d p b 2.25 mm). Gil et al [28] also observed this tendency for three kinds of milled cardoon at different particle size (d p b 0.5-5 mm), and later reported the underlying mechanism that govern the handling behavior for poplar and corn stover (d p b 5 mm), partially, due to effects of particle size and shape [29].…”

Section: Introductionmentioning

confidence: 81%

“…In addition, Gil et al [29] showed that this variable had also no effects on energy consumption, drying of biomass during milling or some handling properties of the milled poplar. Therefore this variable was not considered on the test campaign for corn stover in order to decrease the number of test from 32 to 16 and reduce the experimental campaign costs.…”

Section: Test Planningmentioning

confidence: 99%

Hammer mill operating and biomass physical conditions effects on particle size distribution of solid pulverized biofuels

Gil

Arauzo

2014

Fuel Processing Technology

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“…Cohesion forces between the particles are observed in cohesive materials, while these forces are notobserved in bulk materials [6].These properties play an important role in the process of loading and unloading, transporting and storage of pellets. Knowledge of the mechanical properties of granular biomass is important for the design and efficient operation of equipment for handling, storing, and processing such materials [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Friction properties of pellets made of wood and straw

Świętochowski

Dąbrowska

Lisowski

2018

Engineering for Rural Development

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Abstract. The aim of the work was to obtain knowledge of the friction properties of materials subjected to pressure agglomeration (wood pellets and straw pellets). The frictional properties of the tested materials were evaluated by: the angle of internal friction and the effective internal friction angle of pellets, uniaxial shear strength, material flowability coefficient and the cohesion value of the material. Wooden pellet has a higher strength on uniaxial compression average of 36.2 kPa than the pellet made of straw, approximately of 31.3 kPa. Based on the flowability index, it was found that straw and wood pellets are easily flowing (4 < ff c < 10). The values of the internal friction angles were higher for biomass made of wood than from straw, and were 50.02º and 35.17º, respectively. Pellets made of straw were more cohesive materials (approximately 8000 Pa) than the pellets made of wood (approximately 6600 Pa).

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Handling behavior of two milled biomass: SRF poplar and corn stover

Cited by 61 publications

References 30 publications

Evaluating the pelletization of “pure” and blended lignocellulosic biomass feedstocks

Evaluating the pelletization of “pure” and blended lignocellulosic biomass feedstocks

Hammer mill operating and biomass physical conditions effects on particle size distribution of solid pulverized biofuels

Friction properties of pellets made of wood and straw

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