Effects of temperature and holding time during torrefaction on the pyrolysis behaviors of woody biomass

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Wannapeera J., Fungtammasan B., Worasuwannarak N.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2011

วารสาร: Journal of Analytical and Applied Pyrolysis (0165-2370)

Volume number: 92

Issue number: 1

หน้าแรก: 99

หน้าสุดท้าย: 105

จำนวนหน้า: 7

นอก: 0165-2370

eISSN: 1873-250X

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-80051597185&doi=10.1016%2fj.jaap.2011.04.010&partnerID=40&md5=b4ea61c32b5681b35e27f72e5e31bcea

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

Torrefaction is the thermal treatment techniques performed at relatively low temperature (<300 ฐC) in an inert atmosphere, which aims to improve the fuel properties attractively. In this study, woody biomass (Leucaena leucocephala) was torrefied at various temperatures and holding times and the pyrolysis behaviors of the torrefied wood were examined in detail by using TG-MS technique. It was found that the carbon content and the calorific value of the torrefied leucaena increased significantly when temperature and holding time during the torrefaction increased. From the TG-MS analysis, the pyrolysis behaviors of the torrefied leucaena were significantly different from those of the raw leucaena. The char yield at 800 ฐC for the torrefied leucaena was increased when increasing the holding time during the torrefaction. On the other hand, the tar yield during the pyrolysis decreased significantly with the increase in the holding time during the torrefaction. Through the results from the TG-MS analysis, it was concluded that the structure of leucaena was changed by the torrefaction at temperature below 275 ฐC and the cross-linking reactions occurred during the pyrolysis resulting in increase in char yields and decrease in tar yields. It was also suggested that the longer the holding time during the torrefaction, the more the cross-linking reactions proceed during the pyrolysis. The results obtained from the study provide the basic information for the pyrolyser and/or gasifier design by using torrefied biomass as a fuel. ฉ 2011 Elsevier B.V. All rights reserved.

คำสำคัญ

TG-MS