Experimental research on shape and size distribution of biomass particle

Qiang, Guo; Chen, Xueli; Liu, Haifeng

doi:10.1016/j.fuel.2011.11.041

Cited by 120 publications

(45 citation statements)

References 24 publications

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“…phloem, xylem, bark, leaves/needles, roots, fruits etc.) adding more variation to physical and chemical properties [5], besides that of moisture content and potential contaminants.…”

Section: Introductionmentioning

confidence: 99%

Assessment on bulk solids best practice techniques for flow characterization and storage/handling equipment design for biomass materials of different classes

Berry

Larsson

Lestander

et al. 2015

Fuel Processing Technology

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This paper shows the results of a collaborative project in which four different laboratories have carried out complementary characterization tests on samples of the same set of lignocellulosic biomass materials with the objectives of better understanding their properties and identifying any critical features of the different characterization procedures. Three different types of material were used as model biomasses: 1) Scots pine wood chips, as an example of a coarse and flaky particulate biomass with some elastic properties; 2) chopped straw of reed canary grass as a nesting biomass having long and flaky fibers; 3) Scots pine wood powder as a fine particulate with elastic and cohesive properties. Particle size and shape analyses were carried out with; calipers, 2D image analysis, 3D image analysis (ScanChip) and through mechanical sieving. Applications and validity limits of each of these techniques are evaluated and discussed. The flow function and internal friction 2 were determined with a Schulze ring shear tester, a Brookfield powder flow tester and a large ring shear tester. No significant differences in the results generated by these shear testing techniques were found. Wall friction measurements were carried out with a Schulze ring shear tester; a Brookfield powder flow tester; a large Jenike shear tester and a Casagrande shear box. Results, in this case, showed significant differences with a higher wall friction coefficient obtained with the larger shear cell. Additionally, tensile strengths of biomass materials were measured by the use of a novel measurement technique. Arching tests were carried out in a pilot scale plane silo with variable hopper geometry and results were compared with those predicted by applying the Jenike procedure and a modified procedure which assumed tensile strength was the controlling material property (rather than unconfined yield strength). Finally, safety of handling and storage was assessed by carrying out explosion tests on dusts from Scots pine and reed canary grass.KEYWORDS: lignocellulosic biomass, particle size, particle shape, flowability, arching, explosion RESEARCH HIGHLIGHTS: Suitable test methods were classified for three biomass classes  Different particle sizing methods give a wide range of results  Shear tests do not discriminate flowability differences between the biomass classes  Arching behavior depends more on tensile strength than on compressive strength  Scots pine and reed canary grass dusts are flammable

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“…phloem, xylem, bark, leaves/needles, roots, fruits etc.) adding more variation to physical and chemical properties [5], besides that of moisture content and potential contaminants.…”

Section: Introductionmentioning

confidence: 99%

Assessment on bulk solids best practice techniques for flow characterization and storage/handling equipment design for biomass materials of different classes

Berry

Larsson

Lestander

et al. 2015

Fuel Processing Technology

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“…La prueba de hinchamiento o aumento de espesor de la probeta después de 2 y 24 horas de inmersión en agua, arrojó los resultados consignados en la Tabla 9 para los tableros de aserrín de referencia, además de los reforzados con 20% de caucho, 20% de fibra de vidrio y 20% de fibra de yute. Se observa, entonces, que de manera análoga a la prueba de absorción las probetas de aserrín de referencia y las reforzadas con caucho no mostraron gran aumento de espesor atribuido a la forma de partícula y a la mejor compactación de la mezcla (Guo, Chen and Liu, 2012). Las cargas fibrosas mejoraron el transporte de humedad hacia el interior del tablero provocando con ello un mayor aumento de espesor (Ciannamea, Stefani and Ruseckaite, 2010).…”

Section: Resultados Y Discusiónunclassified

Tableros de partículas de polvillo de aserrín reforzados con subproductos reciclados (TAR)

et al. 2012

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ResumenEl propósito del presente estudio es investigar el comportamiento mecánico y físico de tableros aglomerados, compuestos por polvillo de aserrín y resinas melamínica-urea formaldehído (MUF) en los que se introdujeron cargas de materiales recuperados como caucho sintético, fibra de vidrio y fibra de yute. Se estudiaron algunos parámetros como la relación molar M/UF, la resistencia a la tracción, la resistencia a la flexión, la gravedad específica, la absorción de humedad y el hinchamiento después de 2 y 24 horas de inmersión en agua. Los resultados experimentales arrojaron valores máximos de resistencia a la tracción y a la flexión de 10,9 MPa y de 48 MPa respectivamente, con una razón molar M/UF de 1,5. La temperatura de trabajo fue de 150 °C y el tiempo estimado por prensado fue de 150 s.Palabras clave: Tableros aglomerados de partículas, aserrín, residuos industriales, resina melamínica, resina urea-formaldehído, resistencia a la tracción, módulo de ruptura, material compuesto. AbstractThe purpose of this study is to investigate the mechanical and physical behavior of fiberboard composed of sawdust and Melaminica-Urea Formaldehyde (MUF) resins in which loads were introduced of some recycled materials such as: the synthetic rubber, fiberglass and jute fiber. Some parameters were studied such as M/UF molar ratio, tensile strength, flexural strength, specific gravity, moisture absorption and swelling after 2 and 24 hours of immersion in water. Experimental results yielded maximum values of tensile strength and flexural strength of 10.9 MPa and 48 MPa, respectively, with an M/UF molar ratio of 1.5. The working temperature was 150 °C and pressing the estimated time was 150 s.

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“…High moisture content decreases the heating value of fuel, which in turn reduces the conversion efficiency as a large amount of energy would be used for initial drying step during the conversion processes (Mansaray and Ghaly, 1997). Particle size distribution substantially affects the flowability of material and other properties such as heating, diffusion and rate of reaction (Guo et al, 2012;Hernández et al, 2010). The bulk density of rice residues makes the collection, transportation and storage economically unattractive (Natarajan et al, 1998).…”

Section: Ajasmentioning

confidence: 99%

Physical Properties of Rice Residues as Affected by Variety and Climatic and Cultivation Onditions in Three Continents

Zhang

Ghaly

Li³

2012

American Journal of Applied Sciences

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Rice husk and straw are by-products of rice cultivation and processing industry and can be used as an energy source. Proper understanding of the physical properties of rice residues is necessary for utilizing them in thermochemical conversion processes such as gasification and combustion. The physical properties (moisture content, particle size, bulk density and porosity) of rice husks and straws obtained from three countries (Egypt, Cuba and China) were evaluated in this study. The moisture contents of rice husks and straws were in the ranges of 4.60-6.07% and 6.58-6.92%, respectively. For all rice varieties tested, the moisture content of the straws was higher than these of the husks. The particle sizes of rice husks and straws were in the ranges of 0.212-0.850 mm and 0-0.710 mm, respectively. All the rice husk varieties had a normal distribution of particle size around the main value of 0.6 mm while the particle size distribution for the rice straws showed a decreasing trend, the larger the particle size the higher was the weight percentage. The bulk density of rice husks and straws were in the ranges of 331.59-380.54 kg m -3 and 162. 03-194.48 kg m -3 , respectively. The bulk density values of rice straws were lower than those of rice husks. A negative linear relationship between the bulk density and the average particle size was observed for rice husks and straws. The porosity of rice husks and straws were in the ranges of 63.64-68.94% and 71.21-85.28%, respectively. A positive linear relationship between the porosity and the average particle size was observed for rice husks and straws. Also, a negative linear relationship between the porosity and the bulk density was observed. The results obtained from this study showed significant differences in the physical properties of the rice husks and straws collected from different countries (located in three different continents). These differences may be due to variations in climatic conditions, soil type, methods of cultivation and type of fertilizer used. The results also indicated that different parts of rice plant (straw and husk) had different physical properties. Also, significant differences were observed among rice varieties even though they were grown under the same climatic conditions using same soil type and cultivation method as in the case of the long and short grain rice variety of Egypt.

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Experimental research on shape and size distribution of biomass particle

Cited by 120 publications

References 24 publications

Assessment on bulk solids best practice techniques for flow characterization and storage/handling equipment design for biomass materials of different classes

Assessment on bulk solids best practice techniques for flow characterization and storage/handling equipment design for biomass materials of different classes

Tableros de partículas de polvillo de aserrín reforzados con subproductos reciclados (TAR)

Physical Properties of Rice Residues as Affected by Variety and Climatic and Cultivation Onditions in Three Continents

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