Menu
Search
Filters
Close
Menu

Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!

98180 EFFECT OF SULFUR AND CHLORINE ON FURNACE WALL CORROSION

Picture for 98180 EFFECT OF SULFUR AND CHLORINE ON
Available for download
Product Number: 51300-98180-SG
ISBN: 98180 1998 CP
Author: S. C. Kung, W. T. Bakker
$0.00
$20.00
$20.00
The corrosion resistance of a furnace-wall tubing alloy, SA213-T2, was evaluated in a laboratory test, simulating the reducing/sulfidizing combustion environment in PC-fired utility boilers burning coal substoichiometrically. This alloy was exposed to mixed gases containing H2S and HCl, as well as other major flue-gas components, with and without the coverage of ash deposits. The results show that sulfidation was the primary mode of attack on SA213-T2. Chlorination could not be identified from the addition of 80 ppm HCl to the mixed gas and 10 wt.% chlorides to the ash. However, under the lO%-chloride ash, the sultidation attack was noticeably enhanced. The accelerated sulfidation attack was attributed to the increase of point defects in the FeS outer scale formed, thus promoting the outward diffusion of Fe. The presence of a sulfide-rich deposit also considerably increased the sulfidization attack on T2. Such an increase was partially caused by the presence of a constantly reducing/sulfidizing atmosphere locally in the ash layer. In addition, a new corrosion mechanism is proposed here to account for the accelerated attack, which involves sulfidation of T2 by elemental sulfur. The elemental sulfur was formed when the FeS-rich ash was in contact with an oxidizing flue gas. This mechanism would explain the relatively high corrosion wastage found on the furnace walls of units burning coal substoichiometrically. Keywords: FeS, Sulfidation, Chlorine, Furnace Wall, and Corrosion Mechanism
The corrosion resistance of a furnace-wall tubing alloy, SA213-T2, was evaluated in a laboratory test, simulating the reducing/sulfidizing combustion environment in PC-fired utility boilers burning coal substoichiometrically. This alloy was exposed to mixed gases containing H2S and HCl, as well as other major flue-gas components, with and without the coverage of ash deposits. The results show that sulfidation was the primary mode of attack on SA213-T2. Chlorination could not be identified from the addition of 80 ppm HCl to the mixed gas and 10 wt.% chlorides to the ash. However, under the lO%-chloride ash, the sultidation attack was noticeably enhanced. The accelerated sulfidation attack was attributed to the increase of point defects in the FeS outer scale formed, thus promoting the outward diffusion of Fe. The presence of a sulfide-rich deposit also considerably increased the sulfidization attack on T2. Such an increase was partially caused by the presence of a constantly reducing/sulfidizing atmosphere locally in the ash layer. In addition, a new corrosion mechanism is proposed here to account for the accelerated attack, which involves sulfidation of T2 by elemental sulfur. The elemental sulfur was formed when the FeS-rich ash was in contact with an oxidizing flue gas. This mechanism would explain the relatively high corrosion wastage found on the furnace walls of units burning coal substoichiometrically. Keywords: FeS, Sulfidation, Chlorine, Furnace Wall, and Corrosion Mechanism
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 09358 Corrosion Mitigation and Monitoring in Sulfur Recovery Unit
Available for download

09358 Corrosion Mitigation and Monitoring in Sulfur Recovery Unit

Product Number: 51300-09358-SG
ISBN: 09358 2009 CP
Author: Salah I. Al-Luqman, Majed M. Al-Qarni and Iyad Buraiki
Publication Date: 2009
$20.00

This paper will demonstrate the fundamental corrosion issues encountered in Sulfur Recovery Units. It will address the Claus process chronic corrosion problems such as sulfidation, sour environment cracking, weak acid corrosion, etc.
Picture for 11120 Sulfur Corrosion Due To Oxygen Ingress
Available for download

11120 Sulfur Corrosion Due To Oxygen Ingress

Product Number: 51300-11120-SG
ISBN: 2011 11120 CP
Author: Joseph Boivin and Scott Oliphant
Publication Date: 2011
$20.00

 Case histories are presented where Oxygen ingress has led to Sulfur corrosion failures in pipelines and downhole equipment. 

 
Picture for 11398 Investigation of Elemental Sulfur Corrosion Mechanisms
Available for download

11398 Investigation of Elemental Sulfur Corrosion Mechanisms

Product Number: 51300-11398-SG
ISBN: 2011 11398 CP
Author: Haitao Fang, Bruce Brown, David Young, Srdjan Nešic
Publication Date: 2011
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support