Pelletization of torrefied sawdust and properties of torrefied pellets

Li, Hui; Liu, Xinhua; Legros, Robert; Bi, Xiaotao; Lim, C. Jim; Sokhansanj, Shahab

doi:10.1016/j.apenergy.2012.01.002

Cited by 220 publications

(116 citation statements)

References 20 publications

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“…Hydrophobicity of pellets increases with the increasing of the torrefaction temperature (Duncan et al, 2013;Li et al, 2012). The hydrophobicity of pellet increases when the pellets are produced using smaller particle size (Duncan et al, 2013).…”

Section: Pelletizationmentioning

confidence: 93%

“…Equilibrium moisture content is directly related to the moisture absorption capacity of biomass. Li et al (2012) found a reduction in the moisture adsorption capacity from 20.7% wt. to 13.6% wt.…”

Section: Hydrophobicitymentioning

confidence: 99%

“…Li et al (2012) reported that the pelletization of the torrefied biomass is more energy intensive than the raw biomass. Due to the lack of the sufficient hydrogen bonds in the torrefied biomass, the pelletization process consumes more compression energy Na et al, 2013;Stelte et al, 2011).…”

Section: Pelletizationmentioning

confidence: 99%

See 2 more Smart Citations

A Comprehensive Review on Biomass Torrefaction

Nhuchhen¹,

Basu²,

Acharya³

2014

IJREB

174

143

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Biomass is a versatile energy resource that could be used as a sustainable energy resource in solid, liquid and gaseous form of energy sources. Torrefaction is an emerging thermal biomass pretreatment method that has an ability to reduce the major limitations of biomass such as heterogeneity, lower bulk density, lower energy density, hygroscopic behavior, and fibrous nature. Torrefaction, aiming to produce high quality solid biomass products, is carried out at 200-300 °C in an inert environment at an atmospheric pressure. The removal of volatiles through different decomposition reactions is the basic principle behind the torrefaction process. Torrefaction upgrades biomass quality and alters the combustion behavior, which can be efficiently used in the co-firing power plant. This paper presents a comprehensive review on torrefaction of biomass and their characteristics. Despite of the number of advantages, torrefaction is motivated mainly for thermochemical conversion process because of its ability to increase hydrophobicity, grindability and energy density of biomass. In addition to this, torrefied biomass could be used to replace coal in the metallurgical process, and promoted as an alternative of charcoal.

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Section: Pelletizationmentioning

confidence: 93%

Section: Hydrophobicitymentioning

confidence: 99%

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A Comprehensive Review on Biomass Torrefaction

Nhuchhen¹,

Basu²,

Acharya³

2014

IJREB

174

143

View full text Add to dashboard Cite

show abstract

“…Recientemente, la torrefacción y la compactación se han combinado para mejorar el proceso y desempeño de la biomasa (Li et al, 2012). Los pellets con biomasa torrefaccionada disminuyen la absorción de humedad (Li et al, 2012); sin embargo, este tipo de biomasa presenta mayor dificultad de compresión, por lo que es necesario un mayor consumo de energía para la elaboración de los mismos (Wang et al, 2013).…”

Section: Introductionunclassified

“…Los pellets con biomasa torrefaccionada disminuyen la absorción de humedad (Li et al, 2012); sin embargo, este tipo de biomasa presenta mayor dificultad de compresión, por lo que es necesario un mayor consumo de energía para la elaboración de los mismos (Wang et al, 2013). Los pellets también pueden presentar densidades y fuerzas mecánicas menores que los elaborados con biomasa no tratada (Li et al, 2012).…”

Section: Introductionunclassified

Características y propiedades de pellets de biomasa torrefaccionada de Gmelina arborea y Dipterix panamensis a diferentes tiempos

Gaitán-Álvarez¹,

Moya²

2016

Rev Cha Se Cie For y del Amb

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T orrefaction and pelletizing were studied in the generation of energy from lignocellulosic residues to increase the energy properties of the biomass. The aim of this study was torrefied sawdust from Gmelina arborea and Dipteryx panamensis at 200 °C in three time period: 0, 15 and 20 minutes. Then with the biomass, pellets of 6 mm diameter were manufactured and their physical properties, calorific value, density and compression force were evaluated. Both species had similar physical characteristics according to the average diameter (0.50 mm), length (21.50 mm), and water absorption rate (6.00 %). The calorific value increased from 9,749 kJ·kg -1 in un-terrified biomass to 18,126 kJ·kg -1 with torrefied biomass. The pellets from D. panamesis had greater density and compression force compared to G. arborea biomass. Based on the results, pellet compression force decreases as the torrefaction time increases. There is positive correlation between bulk density of pellets and compression force. The D. panamensis species has better torrefaction behavior and pelletizing than the wood of G. arborea. ResumenL a torrefacción y peletización se han estudiado en la generación de calor a partir de residuos lignocelulósicos, para incrementar las propiedades energéticas del material. El objetivo del presente trabajo fue torrefaccionar aserrín de Gmelina arborea y Dipteryx panamensis a 200 °C en tres tiempos: 0, 15 y 20 minutos. Con las biomasas obtenidas se fabricaron pellets de 6 mm de diámetro y se evaluaron sus propiedades físicas, el poder calórico, la densidad y la propiedad mecánica de resistencia a la compresión. Ambas especies presentaron características físicas similares con respecto al diámetro (0.50 mm), longitud (21.50 mm) y porcentaje de absorción de agua (6.00 %). El poder calórico aumentó de 9,749 kJ·kg -1 en la biomasa sin torrefaccionar a 18,126 kJ·kg -1 en la biomasa torrefaccionada. Los pellets de D. panamesis presentaron mayor densidad y resistencia a la compresión que los de G. arborea. Con base en los resultados, la resistencia a la compresión del pellet disminuye cuando el tiempo de torrefacción aumenta. Existe correlación positiva entre la densidad de los pellets y la resistencia a la compresión. La especie D. panamensis presenta mejor comportamiento a la torrefacción y peletización que la madera de G. arborea.

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Biomass‐Based Energy Production

Arshadi

Sellstedt

2014

Introduction to Chemicals From Biomass

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Pelletization of torrefied sawdust and properties of torrefied pellets

Cited by 220 publications

References 20 publications

A Comprehensive Review on Biomass Torrefaction

A Comprehensive Review on Biomass Torrefaction

Características y propiedades de pellets de biomasa torrefaccionada de Gmelina arborea y Dipterix panamensis a diferentes tiempos

Biomass‐Based Energy Production

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