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Dewatering and Drying of Bark

Holmberg, André LU and Stenström, Stig LU (2014) In International Journal of Energy Engineering 4(2A). p.8-16
Abstract
Technical solutions for a number of Swedish industrial installations for dewatering and drying of bark are compiled and discussed. Further, lab-scale experiments with a heated bark pressing process have been performed to investigate to what extent parameters such as temperature and pressure will influence the dewatering process. Pressing with a heated press at 150 °C was shown to increase the dewatering by over 20 % and more efficient dewatering is expected if the bark is more evenly heated before the press. In the drying area rotary and superheated steam dryers are replaced with bed dryers mainly due to the fact that the drying air can be heated with low-grade energy sources and that the maintenance costs are lower. The economy for such a... (More)
Technical solutions for a number of Swedish industrial installations for dewatering and drying of bark are compiled and discussed. Further, lab-scale experiments with a heated bark pressing process have been performed to investigate to what extent parameters such as temperature and pressure will influence the dewatering process. Pressing with a heated press at 150 °C was shown to increase the dewatering by over 20 % and more efficient dewatering is expected if the bark is more evenly heated before the press. In the drying area rotary and superheated steam dryers are replaced with bed dryers mainly due to the fact that the drying air can be heated with low-grade energy sources and that the maintenance costs are lower. The economy for such a process will to a very large extent depend on using waste energy sources at the mill which can be considered at no or very low cost. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bark, Dewatering, Drying, Bark Processes, Bed Dryer
in
International Journal of Energy Engineering
volume
4
issue
2A
pages
8 - 16
publisher
World Academic Publishing
ISSN
2225-6563
language
English
LU publication?
yes
id
3d975d08-d068-4965-9744-9a4186b43575 (old id 4499394)
date added to LUP
2014-06-24 09:23:35
date last changed
2016-04-16 01:28:24
@article{3d975d08-d068-4965-9744-9a4186b43575,
  abstract     = {Technical solutions for a number of Swedish industrial installations for dewatering and drying of bark are compiled and discussed. Further, lab-scale experiments with a heated bark pressing process have been performed to investigate to what extent parameters such as temperature and pressure will influence the dewatering process. Pressing with a heated press at 150 °C was shown to increase the dewatering by over 20 % and more efficient dewatering is expected if the bark is more evenly heated before the press. In the drying area rotary and superheated steam dryers are replaced with bed dryers mainly due to the fact that the drying air can be heated with low-grade energy sources and that the maintenance costs are lower. The economy for such a process will to a very large extent depend on using waste energy sources at the mill which can be considered at no or very low cost.},
  author       = {Holmberg, André and Stenström, Stig},
  issn         = {2225-6563},
  keyword      = {Bark,Dewatering,Drying,Bark Processes,Bed Dryer},
  language     = {eng},
  number       = {2A},
  pages        = {8--16},
  publisher    = {World Academic Publishing},
  series       = {International Journal of Energy Engineering},
  title        = {Dewatering and Drying of Bark},
  volume       = {4},
  year         = {2014},
}