Advanced

On the intrinsic high temperature calcium oxide-sulfur dioxide reaction using the vacuum thermogravimetric analysis technique

Ye, ZC and Bjerle, Ingemar LU (1996) In Journal of the Air and Waste Management Association 46(8). p.734-741
Abstract
The high temperature CaO/SO2 reaction was studied using four Swedish limestones and one dolomite as sorbents. The measurements were carried out in a vacuum thermogravimetric analysis (TGA) apparatus in order to investigate the intrinsic reaction mechanism. The reaction was found to be fast at the beginning due to the surface reaction, while the subsequent stage was controlled by the product layer diffusion, showing a lower reaction rate. The reaction rate increased as temperature increased up to 1000 degrees C in the range tested. SO2 partial pressure weakly affected the reaction. The fine sorbent particles used in the study resulted in the high CaO conversion. Further grinding of the sorbents gave a small increase in CaO conversion.... (More)
The high temperature CaO/SO2 reaction was studied using four Swedish limestones and one dolomite as sorbents. The measurements were carried out in a vacuum thermogravimetric analysis (TGA) apparatus in order to investigate the intrinsic reaction mechanism. The reaction was found to be fast at the beginning due to the surface reaction, while the subsequent stage was controlled by the product layer diffusion, showing a lower reaction rate. The reaction rate increased as temperature increased up to 1000 degrees C in the range tested. SO2 partial pressure weakly affected the reaction. The fine sorbent particles used in the study resulted in the high CaO conversion. Further grinding of the sorbents gave a small increase in CaO conversion. Sintering generally decreased the initial reactivity but might not affect the ultimate CaO capacity. The larger pores in nascent CaO particles were valuable for the initial reaction conversion. (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
Journal of the Air and Waste Management Association
volume
46
issue
8
pages
734 - 741
publisher
Taylor & Francis
external identifiers
  • wos:A1996VB90100003
  • scopus:0029776407
ISSN
1096-2247
DOI
10.1080/10473289.1996.10467507
language
English
LU publication?
yes
id
f0107e57-b8eb-4afe-86c8-99e6ea30a0c9 (old id 3916696)
date added to LUP
2013-07-03 08:05:07
date last changed
2017-01-01 05:04:10
@article{f0107e57-b8eb-4afe-86c8-99e6ea30a0c9,
  abstract     = {The high temperature CaO/SO2 reaction was studied using four Swedish limestones and one dolomite as sorbents. The measurements were carried out in a vacuum thermogravimetric analysis (TGA) apparatus in order to investigate the intrinsic reaction mechanism. The reaction was found to be fast at the beginning due to the surface reaction, while the subsequent stage was controlled by the product layer diffusion, showing a lower reaction rate. The reaction rate increased as temperature increased up to 1000 degrees C in the range tested. SO2 partial pressure weakly affected the reaction. The fine sorbent particles used in the study resulted in the high CaO conversion. Further grinding of the sorbents gave a small increase in CaO conversion. Sintering generally decreased the initial reactivity but might not affect the ultimate CaO capacity. The larger pores in nascent CaO particles were valuable for the initial reaction conversion.},
  author       = {Ye, ZC and Bjerle, Ingemar},
  issn         = {1096-2247},
  language     = {eng},
  number       = {8},
  pages        = {734--741},
  publisher    = {Taylor & Francis},
  series       = {Journal of the Air and Waste Management Association},
  title        = {On the intrinsic high temperature calcium oxide-sulfur dioxide reaction using the vacuum thermogravimetric analysis technique},
  url          = {http://dx.doi.org/10.1080/10473289.1996.10467507},
  volume       = {46},
  year         = {1996},
}