Upgrading of Rice Husk by Torrefaction and its Influence on the Fuel Properties

Chen, Dengyu; Zhou, Jianbin; Zhang, Qisheng; Zhu, Xun; Lü, Qiang

doi:10.15376/biores.9.4.5893-5905

Cited by 80 publications

(65 citation statements)

References 33 publications

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“…Previous studies (Teuch et al 2004;Chen et al 2014) have shown that the increase of calorific value is higher than that obtained by this modeling, i.e. 5 to 8%.…”

Section: Fig 2 Increasing Of Calorific Value Related To Hemi-(a) Ancontrasting

confidence: 66%

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Effects and Modeling of Sawdust Torrefaction for Beech Pellets

Lunguleasa¹,

Spirchez²,

Griu³

2015

BioResources

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This study was done to determine the effects of beech sawdust torrefaction on pellets obtained in the laboratory. Torrefied beech (Fagus sylvatica L.) sawdust was used to make pellets. This species was chosen based on the existence of a market for such micro-briquettes. Rigorous comparisons between torrefied and non-torrefied pellets were conducted. It was found that treating the sawdust had both beneficial and non-beneficial effects, but the total effect is positive. Economical elements were also considered, emphasizing the use of wood biomass as fuel. Theoretical and experimental aspects are taken into consideration, the experimental results being used to validate the theoretical model. The experiments performed demonstrate that heat treatment can add value if it meets certain parameters, such as a maximum temperature of 260 °C for 5 min. Heat treatment of beech sawdust in the form of pellets or briquettes was shown to be a simple, viable, effective treatment because the heating process improves the calorific value and other relevant properties of the torrefied sawdust.

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“…Previous studies (Teuch et al 2004;Chen et al 2014) have shown that the increase of calorific value is higher than that obtained by this modeling, i.e. 5 to 8%.…”

Section: Fig 2 Increasing Of Calorific Value Related To Hemi-(a) Ancontrasting

confidence: 66%

“…1. Torrefaction is the heat-treatment of coarsely chopped material in an oxygen/ nitrogen atmosphere at 200 to 300 °C (Chen et al 2014) to improve the properties of the treated material. Torrefied biomass is typically 70% of its original weight and contains 90% of its original energy (Teuch et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Effects and Modeling of Sawdust Torrefaction for Beech Pellets

Lunguleasa¹,

Spirchez²,

Griu³

2015

BioResources

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“…However, effective treatment and conversion of biomass into energy requires additional research. To date, varieties of techniques have been applied in biomass treatment and conversion, such as combustion, pyrolysis, gasification (Yang et al 2006;Wiedner et al 2013;Chen et al 2014). However, a complicated high temperature process for biofuels and bioproducts will undesirably be accompanied by a high cost.…”

Section: Introductionmentioning

confidence: 99%

Chemical, Energetic, and Structural Characteristics of Hydrothermal Carbonization Solid Products for Lawn Grass

Guo¹,

Dong²,

Liu³

et al. 2015

BioResources

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Hydrothermal carbonization (HTC) of lawn grass was carried out at 200 °C and 240 °C for 30 to 180 min. The chemical, energetic, and structural characteristics of HTC solid residues were investigated. Results from HTC experiments indicate that solid mass yield of all solid residues was 31 to 50%. The hydrogen/carbon (H/C) and oxygen/carbon (O/C) atomic ratios of all solid residues were 1.17 to 1.64 and 0.45 to 0.65, respectively. The higher heating value (HHV) increased up to 20.54 MJ/kg with increasing HTC residence time at 240 °C for 180 min. Both XRD patterns and FTIR spectra show that differences occur with samples treated as compared to the raw material. Solid hydrochar exhibited higher ordered structure characteristics and was mainly derived from amorphous components degradation when the residence time was increased from 30 to 180 min at 200 °C, while hydrochar formed from cellulose components degradation with increased residence time at 240 °C. According to the results studied, it was found that prolonged residence time was favorable to the formation of hydrochar from lawn grass.

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“…Analisando a tabela 4 constatou-se que a biomassa torrada a 240° C com 10 minutos de residência, apresenta-se como o melhor tratamento para a biomassa analisada quando comparada com as propriedades in natura, visto que, apresentou uma boa eliminação de umidade (maior densidade energética), baixa degradação de voláteis (maior aproveitamento da massa) e baixas concentrações de cinzas (característica prejudicial para sistemas de alimentação de combustíveis). De acordo com Chen et al (2014), baixos tempos de residência implicam em maior rendimento do processo e, consequentemente, menor será a perda energética dos resíduos lignocelulósicos torrificados.…”

Section: Temp (°C)unclassified

Caracterização Da Casca Do Palmito Para Uso Energético

Almada¹,

Souza²,

Santana³

et al. 2017

Enci Bio

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RESUMOO uso de biomassa lignocelulósica vem ao longo dos anos ganhando destaque nas matrizes energéticas mundiais, pois o seu potencial energético, já comprovado, demonstra que a mesma pode substituir parcial ou totalmente diversos combustíveis fósseis. A menor agressão ao meio ambiente e suas características físico-químicas que permitem ser processada por diversas técnicas de geração de energia o fazem uma excelente opção de obtenção de energia limpa. O beneficiamento industrial do palmito produz diversos resíduos lignocelulósicos, entre estes, a casca do palmito. Esta biomassa quando devidamente valorada pode ser aproveitada também para geração de energias térmica e elétrica. Considerando o potencial energético da casca de palmito, este trabalho objetivou caracterizar as propriedades físico-químicas de resíduos de casca de palmito e avaliar seu uso como biomassa energética após um processo de beneficiamento de torrefação em diferentes temperaturas de trabalho: 240 °C; 260 °C; 280 °C e 300 °C e tempos de residência: 10 minutos; 20 minutos e 30 minutos utilizando um forno tipo mufla em ambiente com baixo teor de oxigênio. A coleta da biomassa foi realizada em uma indústria, localizada no município de Abaetetuba-Pa. O material coletado e torrificado foi caracterizado por análise imediata que funcionou como um indicativo para um estudo preliminar do potencial energético da biomassa. A amostra com melhor relação de eliminação de umidade, baixa degradação de voláteis e baixas concentrações de cinzas foi a torrefação a 240 °C por 10 minutos. PALAVRAS-CHAVE: Biomassa, Energia, Torrefação CHARACTERIZATION OF THE PALM HEART SHEAT FOR ENERGY USE ABSTRACTThe use of lignocellulosic biomass over the years has gained prominence in the world energy matrix, since its proven energy potential demonstrates that it can partially or totally replace several fossil fuels. Its lower aggression to the environment and its physico-chemical characteristics that allow it to be processed by several techniques of energy generation make it an excellent option to obtain clean energy.

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Upgrading of Rice Husk by Torrefaction and its Influence on the Fuel Properties

Cited by 80 publications

References 33 publications

Effects and Modeling of Sawdust Torrefaction for Beech Pellets

Effects and Modeling of Sawdust Torrefaction for Beech Pellets

Chemical, Energetic, and Structural Characteristics of Hydrothermal Carbonization Solid Products for Lawn Grass

Caracterização Da Casca Do Palmito Para Uso Energético

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