Heat and mass transfer during lignocellulosic biomass torrefaction: Contributions from the major components-cellulose, hemicellulose, and lignin

The torrefaction of three representative types of biomass-bamboo, and Douglas fir and its bark-was carried out in a cylindrical-shaped packed bed reactor under nitrogen flow at 573 K of the reactor wall temperature. As the thermal energy for the torrefaction was supplied from the top and the side of...

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Main Authors: Tanoue, K.-I., Hikasa, K., Hamaoka, Y., Yoshinaga, A., Nishimura, T., Uemura, Y., Hideno, A.
Format: Article
Published: MDPI AG 2020
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090033440&doi=10.3390%2fPR8080959&partnerID=40&md5=5811ae0c3e838dfdcf5f0f24d1eb5cf5
http://eprints.utp.edu.my/30090/
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spelling my.utp.eprints.300902022-03-25T06:33:57Z Heat and mass transfer during lignocellulosic biomass torrefaction: Contributions from the major components-cellulose, hemicellulose, and lignin Tanoue, K.-I. Hikasa, K. Hamaoka, Y. Yoshinaga, A. Nishimura, T. Uemura, Y. Hideno, A. The torrefaction of three representative types of biomass-bamboo, and Douglas fir and its bark-was carried out in a cylindrical-shaped packed bed reactor under nitrogen flow at 573 K of the reactor wall temperature. As the thermal energy for the torrefaction was supplied from the top and the side of the bed, the propagation of the temperature profile of the bed is a crucial factor for discussing and improving the torrefaction reactor performance. Therefore, the temperature and gas flow rate (vector) profiles throughout the bed were calculated by model simulation so as to scrutinize this point. The measured temperature at a certain representative location (z = 30 mm and r = 38 mm) of the bed was well reproduced by the simulation. The volume faction of the bed at temperatures higher than 500 K at 75 min was 0.89, 0.85, and 0.99 for bamboo, and Douglas fir and its bark, respectively. It was found that the effective thermal conductivity is the determining factor for this difference. The heat of the reactions was found to be insignificant. © 2020 by the authors. MDPI AG 2020 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090033440&doi=10.3390%2fPR8080959&partnerID=40&md5=5811ae0c3e838dfdcf5f0f24d1eb5cf5 Tanoue, K.-I. and Hikasa, K. and Hamaoka, Y. and Yoshinaga, A. and Nishimura, T. and Uemura, Y. and Hideno, A. (2020) Heat and mass transfer during lignocellulosic biomass torrefaction: Contributions from the major components-cellulose, hemicellulose, and lignin. Processes, 8 (8). http://eprints.utp.edu.my/30090/
institution Universiti Teknologi Petronas
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collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description The torrefaction of three representative types of biomass-bamboo, and Douglas fir and its bark-was carried out in a cylindrical-shaped packed bed reactor under nitrogen flow at 573 K of the reactor wall temperature. As the thermal energy for the torrefaction was supplied from the top and the side of the bed, the propagation of the temperature profile of the bed is a crucial factor for discussing and improving the torrefaction reactor performance. Therefore, the temperature and gas flow rate (vector) profiles throughout the bed were calculated by model simulation so as to scrutinize this point. The measured temperature at a certain representative location (z = 30 mm and r = 38 mm) of the bed was well reproduced by the simulation. The volume faction of the bed at temperatures higher than 500 K at 75 min was 0.89, 0.85, and 0.99 for bamboo, and Douglas fir and its bark, respectively. It was found that the effective thermal conductivity is the determining factor for this difference. The heat of the reactions was found to be insignificant. © 2020 by the authors.
format Article
author Tanoue, K.-I.
Hikasa, K.
Hamaoka, Y.
Yoshinaga, A.
Nishimura, T.
Uemura, Y.
Hideno, A.
spellingShingle Tanoue, K.-I.
Hikasa, K.
Hamaoka, Y.
Yoshinaga, A.
Nishimura, T.
Uemura, Y.
Hideno, A.
Heat and mass transfer during lignocellulosic biomass torrefaction: Contributions from the major components-cellulose, hemicellulose, and lignin
author_facet Tanoue, K.-I.
Hikasa, K.
Hamaoka, Y.
Yoshinaga, A.
Nishimura, T.
Uemura, Y.
Hideno, A.
author_sort Tanoue, K.-I.
title Heat and mass transfer during lignocellulosic biomass torrefaction: Contributions from the major components-cellulose, hemicellulose, and lignin
title_short Heat and mass transfer during lignocellulosic biomass torrefaction: Contributions from the major components-cellulose, hemicellulose, and lignin
title_full Heat and mass transfer during lignocellulosic biomass torrefaction: Contributions from the major components-cellulose, hemicellulose, and lignin
title_fullStr Heat and mass transfer during lignocellulosic biomass torrefaction: Contributions from the major components-cellulose, hemicellulose, and lignin
title_full_unstemmed Heat and mass transfer during lignocellulosic biomass torrefaction: Contributions from the major components-cellulose, hemicellulose, and lignin
title_sort heat and mass transfer during lignocellulosic biomass torrefaction: contributions from the major components-cellulose, hemicellulose, and lignin
publisher MDPI AG
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090033440&doi=10.3390%2fPR8080959&partnerID=40&md5=5811ae0c3e838dfdcf5f0f24d1eb5cf5
http://eprints.utp.edu.my/30090/
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