Torrefaction and densification of different species of softwood residues

Peng, Jie; Bi, Xiaotao; Sokhansanj, Shahab; Lim, C. Jim

doi:10.1016/j.fuel.2013.04.048

Cited by 158 publications

(101 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Better agreement would be expected if the correlation was developed for a specific group of biomass, instead of a wide range. Bridgeman et al (2008) [ii] Peng et al (2013) [iii] Phanphanich & Mani (2011) [iv] Wannapeera et al (2011) [v] Chen et al (2011a [vi] Lu et al (2012) [vii] Yan et al (2009) [viii] [ix] Strandberg et al (2015) [x] Chen et al (2014b) [xi] Xue et al (2014) [xii] Grigiante & Antolini (2015) [xiii] Satpathy et al (2014) [xiv] Zheng et al (2013) [xv] Chen et al (2012) Bridgeman et al (2008) [ii] Peng et al (2013) …”

Section: Discussionmentioning

confidence: 99%

“…Although the authors claimed that the severity of torrefaction increases with an increase in energy yield, no explicit suggestion on severity was proposed. Peng et al (2013) used mass loss as an indicator of torrefaction severity and developed a linear relationship between energy density or higher heating value (HHV) and mass loss expressed as, HHV = 19.85 + 9.34 (ML%)…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Index for Quantifying the Degree of Torrefaction

Basu¹,

Kulshreshtha²,

Acharya³

2017

BioResources

View full text Add to dashboard Cite

Torrefaction, a thermochemical pre-treatment process, is used to enhance the properties of biomass to make it more compatible with solid fossil fuels. A quantitative index (TI) is proposed here to define the degree or quality of torrefaction especially for its use in the energy industries. Torrefaction index is defined as the ratio of energy density enhancement factor of the product at the specified condition to that at a reference condition, which is torrefaction at 300 °C for 60 min. The index, calculated for a wide range of data shows a linear dependence on torrefaction temperature. Numerical values of this index were in range of 0.93 to 0.95, 0.95 to 0.97, and 0.97 to 1.0 for light, medium, and severe torrefaction conditions, respectively. Based on a wide range of experimental data of woody biomass, two empirical correlations for mass and energy yields were developed. These correlations permitted prediction of TI without performing torrefaction of the biomass.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Index for Quantifying the Degree of Torrefaction

Basu¹,

Kulshreshtha²,

Acharya³

2017

BioResources

View full text Add to dashboard Cite

show abstract

“…Almeida et al noticed a linear relationship between mass loss and energy yield and carbon fixation of torrential biomass for a range of temperatures [81]. Li et al observed a linear relationship between mass yield and energy yield, whereas Peng et al used the mass loss as an indicator of the torrefaction state and developed a linear relationship between energy density and mass loss [54,82]. However, these parameters would have to be measured separate from the torrefaction process.…”

Section: Future Perspectives and Research Developmentsmentioning

confidence: 99%

Future Perspectives of Biomass Torrefaction: Review of the Current State-Of-The-Art and Research Development

et al. 2018

View full text Add to dashboard Cite

Abstract:The growing search for alternative energy sources is not only due to the present shortage of non-renewable energy sources, but also due to their negative environmental impacts. Therefore, a lot of attention is drawn to the use of biomass as a renewable energy source. However, using biomass in its natural state has not proven to be an efficient technique, giving rise to a wide range of processing treatments that enhance the properties of biomass as an energy source. Torrefaction is a thermal process that enhances the properties of biomass through its thermal decomposition at temperatures between 200 and 300 • C. The torrefaction process is defined by several parameters, which also have impacts on the final quality of the torrefied biomass. The final quality is measured by considering parameters, such as humidity, heating value (HV), and grindability. Studies have focused on maximizing the torrefied biomass' quality using the best possible combination for the different parameters. The main objective of this article is to present new information regarding the conventional torrefaction process, as well as study the innovative techniques that have been in development for the improvement of the torrefied biomass qualities. With this study, conclusions were made regarding the importance of torrefaction in the energy field, after considering the economic status of this renewable resource. The importance of the torrefaction parameters on the final properties of torrefied biomass was also highly considered, as well as the importance of the reactor scales for the definition of ideal protocols.

show abstract

“…As a consequence, biomass becomes more hydrophobic, and the water is not as easily absorbed by the biomass again ( Yan et al 2009;Acharjee et al 2011). Currently, studies on torrefaction preprocessing have achieved a certain amount of progress, but almost all studies have been targeted at wood as a raw material (Arias et al 2008;Wannapeera et al 2011;Peng et al 2013;Ren et al 2013;Sabil et al 2013;Tran et al 2013). There are few reports available in the literature regarding torrefaction of rice husk.…”

Section: Introductionmentioning

confidence: 99%

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

Chen¹,

Zhou²,

Zhang³

et al. 2014

BioResources

View full text Add to dashboard Cite

Torrefaction refers to thermal treatment of biomass at 200 to 300 °C in an inert atmosphere, which may increase the heating value while reducing the oxygen content and improving the storability. In this study, the effects of torrefaction temperatures on the properties of rice husk were analyzed. Torrefaction experiments were performed using a labscale device designed to reduce heat and mass transfer transient effects. A new method is described for clarifying torrefaction time and minimizing experimental error. Results from analysis of torrefaction temperatures (200, 230, 260, and 290 °C) support the supposition that the fiber structure is damaged and disrupted, the atomic oxygen ratio is reduced, the atomic carbon ratio and energy density are increased, the equilibrium moisture content is reduced, and the hydrophobic properties of rice husk are enhanced. The data presented in this paper indicate that torrefaction is an effective method of pretreatment for improving rice husk. Torrefaction at 230 to 260 °C for 30 min was found to optimize fuel properties of the torrefied rice husk.

show abstract

Torrefaction and densification of different species of softwood residues

Cited by 158 publications

References 19 publications

An Index for Quantifying the Degree of Torrefaction

An Index for Quantifying the Degree of Torrefaction

Future Perspectives of Biomass Torrefaction: Review of the Current State-Of-The-Art and Research Development

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

Contact Info

Product

Resources

About