Menu
Search
Filters
Close
Menu

97089 Evaluation of Thermal Decomposition Rate of Carbohydrazide And Its Reducing Effect on Carbon Steel Corrosion

Picture for 97089 Evaluation of Thermal Decomposition Rate
Available for download
Product Number: 51300-97089-SG
ISBN: 97089 1997 CP
Author: Kazutoshi Fujiwara, Hirotaka Kawamura, Hideo Hirano, Karrjo Takahashi, Toshihiko Maeda, Masami Koike
$0.00
$20.00
$20.00
Hydrazine as an oxygen scavenger has been widely used for the feed water treatment of PWR secondary side and fossil power plants in the world. However, there is some concern over health and safety issues related to use of hydrazine. Carbohydrazide is listed up as one of alternative oxygen scavengers. In this study, laboratory tests were performed to examine the thermal decomposition rate of carbohydmzide and its reducing effect on carbon steel corrosion in comparison with hydrazine. Test results revealed that carbohydrazide was stable below 373K. The thermal decomposition ratios of carbohydrazide were less than 50% after 20 minutes exposure in the range of 373K to 428K. Its thermal decomposition rate constant was derived from experimental test data. The measurement of dissolved oxygen concentration also showed thatcarbohydrazide possessed a fairly good oxygen scavenger property. Judging from test results mentioned above, it was concluded that carbohydmzide is applicable as an alternative oxygen scavenger for feedwater treatment in PWR and fossil power plant. Keywords: carbohydrazide, hydrazinc, PWR, carbon steel, oxygen scavenger, thermal decomposition rate, corrosion potential, reducing effect.
Hydrazine as an oxygen scavenger has been widely used for the feed water treatment of PWR secondary side and fossil power plants in the world. However, there is some concern over health and safety issues related to use of hydrazine. Carbohydrazide is listed up as one of alternative oxygen scavengers. In this study, laboratory tests were performed to examine the thermal decomposition rate of carbohydmzide and its reducing effect on carbon steel corrosion in comparison with hydrazine. Test results revealed that carbohydrazide was stable below 373K. The thermal decomposition ratios of carbohydrazide were less than 50% after 20 minutes exposure in the range of 373K to 428K. Its thermal decomposition rate constant was derived from experimental test data. The measurement of dissolved oxygen concentration also showed thatcarbohydrazide possessed a fairly good oxygen scavenger property. Judging from test results mentioned above, it was concluded that carbohydmzide is applicable as an alternative oxygen scavenger for feedwater treatment in PWR and fossil power plant. Keywords: carbohydrazide, hydrazinc, PWR, carbon steel, oxygen scavenger, thermal decomposition rate, corrosion potential, reducing effect.
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 97102 SCC MITIGATION STRATEGIES IN HOT
Available for download

97102 SCC MITIGATION STRATEGIES IN HOT WATER

Product Number: 51300-97102-SG
ISBN: 97102 1997 CP
Author: Peter L. Andresen
$20.00
Picture for 06687 RECENT DEVELOPMENTS IN ORGANIC OXYGEN
Available for download

06687 RECENT DEVELOPMENTS IN ORGANIC OXYGEN SCAVENGER TECHNOLOGY

Product Number: 51300-06687-SG
ISBN: 06687 2006 CP
Author: Arif Jaffer, David Fulmer, John Ensslen
$20.00
Picture for 04639 Carbonate Cracking Risk Assessment
Available for download

04639 Carbonate Cracking Risk Assessment of a FCCU Gas Plant

Product Number: 51300-04639-SG
ISBN: 04639 2004 CP
Author: Monique I. Rivera, Steven R. Bolinger, and Clark L. Wollenweber, Shell Oil Products US
Publication Date: 2004
$20.00

This paper provides an introduction on carbonate cracking and Los Angeles refinery’s recent experience with this corrosion mechanism. Also included in this paper is the methodology used for developing a risk assessment for equipment and piping susceptible to carbonate stress corrosion cracking in a fluid catalytic cracking unit (FCCU) gas plant.
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