Quality effects caused by torrefaction of pellets made from Scots pine

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Standard

Quality effects caused by torrefaction of pellets made from Scots pine. / Shang, Lei; Nielsen, Niels Peter K.; Dahl, Jonas; Stelte, Wolfgang; Ahrenfeldt, Jesper; Holm, Jens Kai; Thomsen, Tobias; Henriksen, Ulrik B.

In: Fuel Processing Technology, Vol. 101, 2012, p. 23-28.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Harvard

APA

CBE

MLA

Vancouver

Author

Shang, Lei; Nielsen, Niels Peter K.; Dahl, Jonas; Stelte, Wolfgang; Ahrenfeldt, Jesper; Holm, Jens Kai; Thomsen, Tobias; Henriksen, Ulrik B. / Quality effects caused by torrefaction of pellets made from Scots pine.

In: Fuel Processing Technology, Vol. 101, 2012, p. 23-28.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{ad41609fa070460cbd454f5af49f11c6,
title = "Quality effects caused by torrefaction of pellets made from Scots pine",
keywords = "Wood pellets, Torrefaction, Durability, Strength, Grinding",
publisher = "Elsevier BV",
author = "Lei Shang and Nielsen, {Niels Peter K.} and Jonas Dahl and Wolfgang Stelte and Jesper Ahrenfeldt and Holm, {Jens Kai} and Tobias Thomsen and Henriksen, {Ulrik B.}",
year = "2012",
doi = "10.1016/j.fuproc.2012.03.013",
volume = "101",
pages = "23--28",
journal = "Fuel Processing Technology",
issn = "0378-3820",

}

RIS

TY - JOUR

T1 - Quality effects caused by torrefaction of pellets made from Scots pine

A1 - Shang,Lei

A1 - Nielsen,Niels Peter K.

A1 - Dahl,Jonas

A1 - Stelte,Wolfgang

A1 - Ahrenfeldt,Jesper

A1 - Holm,Jens Kai

A1 - Thomsen,Tobias

A1 - Henriksen,Ulrik B.

AU - Shang,Lei

AU - Nielsen,Niels Peter K.

AU - Dahl,Jonas

AU - Stelte,Wolfgang

AU - Ahrenfeldt,Jesper

AU - Holm,Jens Kai

AU - Thomsen,Tobias

AU - Henriksen,Ulrik B.

PB - Elsevier BV

PY - 2012

Y1 - 2012

N2 - <p>The purpose of the study was to investigate the influence of torrefaction on the quality of Scots pine pellets. Pellet samples were torrefied at 230, 250 and 270°C for 1h in nitrogen atmosphere. Higher heating value (HHV) was increased from 18.37MJkg<sup>−1</sup> to 24.34MJkg<sup>−1</sup>. The energy to crush a pellet by mechanical compression was determined using a material tester and results showed a rapid decrease before torrefaction temperature reached 250°C. Slightly further decrease was observed when increasing the temperature up to 270°C. The strength loss was confirmed by determining the energy required for grinding the pellet samples in a bench scale disc mill. Particle size distribution measurements after grinding indicated a significant increase of small particles (diameterca. 2mm). To further analyze the effect on strength, the mechanical durability of pellets was tested according to wood pellet standards, EN 15210<sup>-1</sup>. The results have shown a good correlation between pellet durability and compression strength, and indicated that the pellet durability can be estimated based on compression strength data of about 25 pellets.</p>

AB - <p>The purpose of the study was to investigate the influence of torrefaction on the quality of Scots pine pellets. Pellet samples were torrefied at 230, 250 and 270°C for 1h in nitrogen atmosphere. Higher heating value (HHV) was increased from 18.37MJkg<sup>−1</sup> to 24.34MJkg<sup>−1</sup>. The energy to crush a pellet by mechanical compression was determined using a material tester and results showed a rapid decrease before torrefaction temperature reached 250°C. Slightly further decrease was observed when increasing the temperature up to 270°C. The strength loss was confirmed by determining the energy required for grinding the pellet samples in a bench scale disc mill. Particle size distribution measurements after grinding indicated a significant increase of small particles (diameterca. 2mm). To further analyze the effect on strength, the mechanical durability of pellets was tested according to wood pellet standards, EN 15210<sup>-1</sup>. The results have shown a good correlation between pellet durability and compression strength, and indicated that the pellet durability can be estimated based on compression strength data of about 25 pellets.</p>

KW - Wood pellets

KW - Torrefaction

KW - Durability

KW - Strength

KW - Grinding

U2 - 10.1016/j.fuproc.2012.03.013

DO - 10.1016/j.fuproc.2012.03.013

JO - Fuel Processing Technology

JF - Fuel Processing Technology

SN - 0378-3820

VL - 101

SP - 23

EP - 28

ER -