Advanced

Bed agglomeration problems in fluidized-bed biomass combustion

Olofsson, Göran LU ; Ye, Z C; Bjerle, Ingemar LU and Andersson, Arne LU (2002) In Industrial & Engineering Chemistry Research 41(12). p.2888-2894
Abstract
Bed material agglomeration was studied experimentally in a fluidized-bed biomass combustor, Four biomass fuels, four bed materials, three bed additives, and three NOx additives were tested in a temperature range of 670-870 degreesC and at two pressure levels of 1.0 and 1.5 MPa. Two types of agglomeration were observed, a homogeneous and a heterogeneous type. The first occurred at low temperature and could be partly compensated for by erosion of the bed. The second took place at high temperatures and often involved interaction between the fuel ash and the bed material. The immobility of the bed particles made the heterogeneous agglomeration a self-accelerated process. The occurrence of hot spots in the bed was the precondition for... (More)
Bed material agglomeration was studied experimentally in a fluidized-bed biomass combustor, Four biomass fuels, four bed materials, three bed additives, and three NOx additives were tested in a temperature range of 670-870 degreesC and at two pressure levels of 1.0 and 1.5 MPa. Two types of agglomeration were observed, a homogeneous and a heterogeneous type. The first occurred at low temperature and could be partly compensated for by erosion of the bed. The second took place at high temperatures and often involved interaction between the fuel ash and the bed material. The immobility of the bed particles made the heterogeneous agglomeration a self-accelerated process. The occurrence of hot spots in the bed was the precondition for heterogeneous agglomeration being induced. When silicon was present, alkali metals were the main contributors to heterogeneous agglomeration. Aluminum and iron compounds were able to suppress agglomeration through the high melting point of the eutectics that were formed. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Industrial & Engineering Chemistry Research
volume
41
issue
12
pages
2888 - 2894
publisher
The American Chemical Society
external identifiers
  • wos:000176059000008
  • scopus:0037066916
ISSN
0888-5885
DOI
10.1021/ie010274a
language
English
LU publication?
yes
id
bc5ca1c6-7da4-4a35-8613-4060bb284d20 (old id 336067)
date added to LUP
2007-11-02 14:02:36
date last changed
2017-12-10 04:36:43
@article{bc5ca1c6-7da4-4a35-8613-4060bb284d20,
  abstract     = {Bed material agglomeration was studied experimentally in a fluidized-bed biomass combustor, Four biomass fuels, four bed materials, three bed additives, and three NOx additives were tested in a temperature range of 670-870 degreesC and at two pressure levels of 1.0 and 1.5 MPa. Two types of agglomeration were observed, a homogeneous and a heterogeneous type. The first occurred at low temperature and could be partly compensated for by erosion of the bed. The second took place at high temperatures and often involved interaction between the fuel ash and the bed material. The immobility of the bed particles made the heterogeneous agglomeration a self-accelerated process. The occurrence of hot spots in the bed was the precondition for heterogeneous agglomeration being induced. When silicon was present, alkali metals were the main contributors to heterogeneous agglomeration. Aluminum and iron compounds were able to suppress agglomeration through the high melting point of the eutectics that were formed.},
  author       = {Olofsson, Göran and Ye, Z C and Bjerle, Ingemar and Andersson, Arne},
  issn         = {0888-5885},
  language     = {eng},
  number       = {12},
  pages        = {2888--2894},
  publisher    = {The American Chemical Society},
  series       = {Industrial & Engineering Chemistry Research},
  title        = {Bed agglomeration problems in fluidized-bed biomass combustion},
  url          = {http://dx.doi.org/10.1021/ie010274a},
  volume       = {41},
  year         = {2002},
}