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Scrubber liquid recovery in biomass gasification plants: centrifugation as a method for tar separation

Malek, Laura LU ; Hulteberg, Christian LU and Svensson, Helena LU (2016) In Biomass Conversion and Biorefinery 6(3). p.261-269
Abstract
Many gasification plants use scrubber systems for the removal of tars from producer gas. The cost of the scrubber liquid represents a considerable part of the operating cost, which could be decreased by regenerating the spent scrubber liquid by separating it from ash residues and heavy tars. In this study, different types of spent scrubber liquids were regenerated using a centrifuge. The effect of centrifugation time (1.5–10 min) and sample temperature (50–90 °C) on the separation efficiency was studied. Based on the results, the separation of tars from the scrubber liquids can be ranked as follows: diesel > RME > linoleic acid > linseed oil > rapeseed oil > motor oil. This ranking correlates to the viscosity of the... (More)
Many gasification plants use scrubber systems for the removal of tars from producer gas. The cost of the scrubber liquid represents a considerable part of the operating cost, which could be decreased by regenerating the spent scrubber liquid by separating it from ash residues and heavy tars. In this study, different types of spent scrubber liquids were regenerated using a centrifuge. The effect of centrifugation time (1.5–10 min) and sample temperature (50–90 °C) on the separation efficiency was studied. Based on the results, the separation of tars from the scrubber liquids can be ranked as follows: diesel > RME > linoleic acid > linseed oil > rapeseed oil > motor oil. This ranking correlates to the viscosity of the different scrubber liquids, with the separation efficiency increasing with decreasing scrubber liquid viscosity. The best separation efficiency was achieved for scrubber liquids with low viscosity at 90 °C and 10 min of centrifugation time. The results obtained indicate that centrifugation can be used for the regeneration of spent scrubber liquid. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Regeneration, Centrifugation, Scrubber liquid, Biomass tar
in
Biomass Conversion and Biorefinery
volume
6
issue
3
pages
9 pages
publisher
Springer
external identifiers
  • wos:000382163900002
  • scopus:85006201853
ISSN
2190-6815
DOI
10.1007/s13399-015-0196-0
language
English
LU publication?
yes
id
c603b7a1-4445-4cb2-adfa-b2aa8e7219fa (old id 8514780)
date added to LUP
2016-01-08 13:05:46
date last changed
2017-06-11 03:07:00
@article{c603b7a1-4445-4cb2-adfa-b2aa8e7219fa,
  abstract     = {Many gasification plants use scrubber systems for the removal of tars from producer gas. The cost of the scrubber liquid represents a considerable part of the operating cost, which could be decreased by regenerating the spent scrubber liquid by separating it from ash residues and heavy tars. In this study, different types of spent scrubber liquids were regenerated using a centrifuge. The effect of centrifugation time (1.5–10 min) and sample temperature (50–90 °C) on the separation efficiency was studied. Based on the results, the separation of tars from the scrubber liquids can be ranked as follows: diesel > RME > linoleic acid > linseed oil > rapeseed oil > motor oil. This ranking correlates to the viscosity of the different scrubber liquids, with the separation efficiency increasing with decreasing scrubber liquid viscosity. The best separation efficiency was achieved for scrubber liquids with low viscosity at 90 °C and 10 min of centrifugation time. The results obtained indicate that centrifugation can be used for the regeneration of spent scrubber liquid.},
  author       = {Malek, Laura and Hulteberg, Christian and Svensson, Helena},
  issn         = {2190-6815},
  keyword      = {Regeneration,Centrifugation,Scrubber liquid,Biomass tar},
  language     = {eng},
  number       = {3},
  pages        = {261--269},
  publisher    = {Springer},
  series       = {Biomass Conversion and Biorefinery},
  title        = {Scrubber liquid recovery in biomass gasification plants: centrifugation as a method for tar separation},
  url          = {http://dx.doi.org/10.1007/s13399-015-0196-0},
  volume       = {6},
  year         = {2016},
}