แจ้งเอกสารไม่ครบถ้วน, ไม่ตรงกับชื่อเรื่อง หรือมีข้อผิดพลาดเกี่ยวกับเอกสาร ติดต่อที่นี่ ==>
หากไม่มีอีเมลผู้รับให้กรอก thailis-noc@uni.net.th
หากไม่มีอีเมลผู้รับให้กรอก thailis-noc@uni.net.th
Weerapong Wattananoi. Upgrading of Biomass by Torrefaction and Densification Process. Master's Degree(Energy Technology). King Mongkut's University of Technology Thonburi. KMUTT Library. : King Mongkut's University of Technology Thonburi, 2010.
Upgrading of Biomass by Torrefaction and Densification Process
Name: Weerapong Wattananoi
keyword:
Torrefaction
Abstract:
Biomass is an important source of renewable energy derived from photosynthesis
in plants. Due to the lower contents of sulfur and nitrogen in biomass, using it as fuel emits
less environmental pollution than fossil fuels. However, biomass utilization as a solid fuel
still has many drawbacks due to its undesirable properties. Torrefaction is a pre- treatment
technique to increase the calorific value and the grindability of biomass. It is operated at
temperatures below 300 C in an inert atmosphere under atmospheric pressure.
Densification is also another pre-treatment technique aimed to increase the density of
biomass. In this study, the effects of torrefaction and densification on the properties and
combustion behaviors of biomass were investigated. Leucaena leucocephala and
eucalyptus were torrefied at 225,250 and 275 C in a fixed bed reactor. Then, the torrefied
biomass was densified with a pellet mill. It was found that the yields of the torrefied
biomass decreased while the heating values of the torrefied biomass increased with
increasing the torrefaction temperatures. The heating value of eucalyptus, for example,
increased up to 21.8% when torrefied at 275 C. It was also found that torrefied biomass at
250 C had the highest mass density of both biomass samples, which was 391.2% (544
kg/m3) for leucaena. The volumetric energy density of the torrefied pellet increased as high
as 434.9% (11.3 GJ/m3) for torrefied leucaena at 250 -c and 422.5% (10.96 GJ/m3) for
torrefied eucalyptus at 275 C. The hydrophobic characteristic of biomass was improved
by torrefaction, which became more hydrophobic characteristic as torrefaction temperature
increased. The char combustion rate of torrefied biomass also increased with increasing
torrefaction temperature. It was also found that the combustion of biomass pellets had
significantly longer combustion times, especially for char combustion.
King Mongkut's University of Technology Thonburi. KMUTT Library
Address:
BANGKOK
Email:
info.lib@mail.kmutt.ac.th
Name: Nakom Worasuwannarak
Role:
Advisor
Created:
2010
Modified:
2012-01-07
Issued:
2555-01-03
วิทยานิพนธ์/Thesis
application/pdf
CallNumber:
JGSEE255
eng
DegreeName: Master of Science
Level: Master's Degree
Descipline: Energy Technology
©copyrights King Mongkut's University of Technology Thonburi
RightsAccess:
ใช้เวลา
0.031676 วินาที
Weerapong Wattananoi
| Title | Contributor | Type |
|---|---|---|
| Upgrading of Biomass by Torrefaction and Densification Process
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี Weerapong Wattananoi | Nakom Worasuwannarak | วิทยานิพนธ์/Thesis |
| Effect of torrefaction temperatures on bio-oil properties from Leucaena leucocephala
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี Onarin Khumsak;King Mongkut's University of Technology Thonburi. The Joint Graduate School of Energy and Environment. Energy Technology and Management Division;Weerapong Wattananoi;King Mongkut's University of Technology Thonburi. The Joint Graduate School of Energy and Environment. Energy Technology and Management Division;Nakorn Worasuwannarak;King Mongkut's University of Technology Thonburi. The Joint Graduate School of Energy and Environment. Energy Division;อรอริน คุ้มศักดิ์;วีรพงษ์ วัฒนะน้อย;นคร วรสุวรรณรักษ์ | บทความ/Article |
Nakom Worasuwannarak
| Title | Creator | Type and Date Create |
|---|---|---|
| Upgrading of Biomass by Torrefaction and Densification Process
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี Nakom Worasuwannarak | Weerapong Wattananoi | วิทยานิพนธ์/Thesis |