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Title: Status Report on Studies of Recovery Boiler Composite Floor Tube Cracking

Abstract

Cracking of the stainless steel layer of co-extruded 304L stainless steel/SA210 Gd A 1 carbon steel black liquor recovery boiler floor tubes has been identified as one of the most serious material problems in the pulp and paper industry. A DOE-funded study was initiated in 1995 with the goal of determining the cause of and possible solutions to this cracking problem. These studies have characterized tube cracking as well as the chemical and thermal environment and stress state of floor tubes. Investigations of possible cracking mechanisms indicate that stress corrosion cracking rather than thermal fatigue is a more likely cause of crack initiation. The cracking mechanism appears to require the presence of hydrated sodium sulfide and is most likely active during shut-downs and/or start-ups. Based on these results and operating experience, certain alloys appear to be more resistant than others to cracking in the floor environment, and certain operating practices appear to significantly lessen the likelihood of cracking. This report is the latest in a series of progress reports presented on this project.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
Sponsoring Org.:
USDOE Office of Industrial Technologies (OIT) (EE-20)
OSTI Identifier:
8250
Report Number(s):
ORNL/CP-103296
ED 19 02 00 0; ON: DE00008250
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Conference
Resource Relation:
Conference: TAPPI Engineering/Process and Product Quality Conference and Trade Fair, Anaheim, CA, September 12-16, 1999
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; Boilers; Tubes; Cracks

Citation Formats

Eng, P., Frederick, L.A., Hoffmann, C.M., Keiser, J.R., Mahmood, J., Maziasz, P.J., Prescott, R., Sarma, G.B., Singbeil, D.L., Singh, P.M., Swindeman, R.W., and Wang, X.-L. Status Report on Studies of Recovery Boiler Composite Floor Tube Cracking. United States: N. p., 1999. Web.
Eng, P., Frederick, L.A., Hoffmann, C.M., Keiser, J.R., Mahmood, J., Maziasz, P.J., Prescott, R., Sarma, G.B., Singbeil, D.L., Singh, P.M., Swindeman, R.W., & Wang, X.-L. Status Report on Studies of Recovery Boiler Composite Floor Tube Cracking. United States.
Eng, P., Frederick, L.A., Hoffmann, C.M., Keiser, J.R., Mahmood, J., Maziasz, P.J., Prescott, R., Sarma, G.B., Singbeil, D.L., Singh, P.M., Swindeman, R.W., and Wang, X.-L. Sun . "Status Report on Studies of Recovery Boiler Composite Floor Tube Cracking". United States. https://www.osti.gov/servlets/purl/8250.
@article{osti_8250,
title = {Status Report on Studies of Recovery Boiler Composite Floor Tube Cracking},
author = {Eng, P. and Frederick, L.A. and Hoffmann, C.M. and Keiser, J.R. and Mahmood, J. and Maziasz, P.J. and Prescott, R. and Sarma, G.B. and Singbeil, D.L. and Singh, P.M. and Swindeman, R.W. and Wang, X.-L.},
abstractNote = {Cracking of the stainless steel layer of co-extruded 304L stainless steel/SA210 Gd A 1 carbon steel black liquor recovery boiler floor tubes has been identified as one of the most serious material problems in the pulp and paper industry. A DOE-funded study was initiated in 1995 with the goal of determining the cause of and possible solutions to this cracking problem. These studies have characterized tube cracking as well as the chemical and thermal environment and stress state of floor tubes. Investigations of possible cracking mechanisms indicate that stress corrosion cracking rather than thermal fatigue is a more likely cause of crack initiation. The cracking mechanism appears to require the presence of hydrated sodium sulfide and is most likely active during shut-downs and/or start-ups. Based on these results and operating experience, certain alloys appear to be more resistant than others to cracking in the floor environment, and certain operating practices appear to significantly lessen the likelihood of cracking. This report is the latest in a series of progress reports presented on this project.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {9}
}

Conference:
Other availability
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