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The kinetics of the reaction of hydrogen chloride with fresh and spent Ca-based desulfurization sorbents

Wang, Wuyin LU ; Ye, ZC and Bjerle, Ingemar LU (1996) In Fuel 75(2). p.207-212
Abstract
The absorption of hydrogen chloride by spent desulfurization sorbents containing calcium carbonate, calcium oxide and calcium hydroxide was investigated. The experiments were carried out in a fixed-bed reactor in two temperature ranges: 423-523 K for slaked lime and 673-873 K for limestone and quicklime. The spent Ca-based sorbents can still react with hydrogen chloride, and after calcining and slaking they even show the same reactivity as pure Ca(OH)(2). A model combining both fixed-bed reactor and shrinking-core model was derived. The activation energy of the surface reaction between hydrogen chloride and limestone was determined to be 84 kJ mol(-1) at 673-873 K. The pore diffusion activation energy was 11 kJ mol(-1) for limestone at... (More)
The absorption of hydrogen chloride by spent desulfurization sorbents containing calcium carbonate, calcium oxide and calcium hydroxide was investigated. The experiments were carried out in a fixed-bed reactor in two temperature ranges: 423-523 K for slaked lime and 673-873 K for limestone and quicklime. The spent Ca-based sorbents can still react with hydrogen chloride, and after calcining and slaking they even show the same reactivity as pure Ca(OH)(2). A model combining both fixed-bed reactor and shrinking-core model was derived. The activation energy of the surface reaction between hydrogen chloride and limestone was determined to be 84 kJ mol(-1) at 673-873 K. The pore diffusion activation energy was 11 kJ mol(-1) for limestone at 673-873 K, 29 kJ mol(-1) for CaO at 673-873 K and 12 kJ mol(-1) for slaked lime at 423-523 K. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
calcium-based sorbents, hydrogen chloride, reaction kinetics
in
Fuel
volume
75
issue
2
pages
207 - 212
publisher
Elsevier
external identifiers
  • wos:A1996TV33400014
  • scopus:0000519762
ISSN
1873-7153
DOI
10.1016/0016-2361(95)00242-1
language
English
LU publication?
yes
id
ff4c3ebd-cef5-431a-a978-93e3697f91a3 (old id 3916699)
date added to LUP
2013-07-03 08:01:11
date last changed
2017-05-28 04:27:09
@article{ff4c3ebd-cef5-431a-a978-93e3697f91a3,
  abstract     = {The absorption of hydrogen chloride by spent desulfurization sorbents containing calcium carbonate, calcium oxide and calcium hydroxide was investigated. The experiments were carried out in a fixed-bed reactor in two temperature ranges: 423-523 K for slaked lime and 673-873 K for limestone and quicklime. The spent Ca-based sorbents can still react with hydrogen chloride, and after calcining and slaking they even show the same reactivity as pure Ca(OH)(2). A model combining both fixed-bed reactor and shrinking-core model was derived. The activation energy of the surface reaction between hydrogen chloride and limestone was determined to be 84 kJ mol(-1) at 673-873 K. The pore diffusion activation energy was 11 kJ mol(-1) for limestone at 673-873 K, 29 kJ mol(-1) for CaO at 673-873 K and 12 kJ mol(-1) for slaked lime at 423-523 K.},
  author       = {Wang, Wuyin and Ye, ZC and Bjerle, Ingemar},
  issn         = {1873-7153},
  keyword      = {calcium-based sorbents,hydrogen chloride,reaction kinetics},
  language     = {eng},
  number       = {2},
  pages        = {207--212},
  publisher    = {Elsevier},
  series       = {Fuel},
  title        = {The kinetics of the reaction of hydrogen chloride with fresh and spent Ca-based desulfurization sorbents},
  url          = {http://dx.doi.org/10.1016/0016-2361(95)00242-1},
  volume       = {75},
  year         = {1996},
}