COAL-FIRED UTILITY BOILERS: SOLVING ASH DEPOSITION PROBLEMS

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Description

The accumulation of slagging and fouling ash deposits in utility boilers has been a source of aggravation for coal-fired boiler operators for over a century. Many new developments in analytical, modeling, and combustion testing methods in the past 20 years have made it possible to identify root causes of ash deposition. A concise and comprehensive guidelines document has been assembled for solving ash deposition as related to coal-fired utility boilers. While this report accurately captures the current state of knowledge in ash deposition, note that substantial research and development is under way to more completely understand and mitigate slagging and ... continued below

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67 pages

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Zygarlicke, Christopher J.; McCollor, Donald P.; Benson, Steven A. & Gunderson, Jay R. April 1, 2001.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 13 times . More information about this report can be viewed below.

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Description

The accumulation of slagging and fouling ash deposits in utility boilers has been a source of aggravation for coal-fired boiler operators for over a century. Many new developments in analytical, modeling, and combustion testing methods in the past 20 years have made it possible to identify root causes of ash deposition. A concise and comprehensive guidelines document has been assembled for solving ash deposition as related to coal-fired utility boilers. While this report accurately captures the current state of knowledge in ash deposition, note that substantial research and development is under way to more completely understand and mitigate slagging and fouling. Thus, while comprehensive, this document carries the title ''interim,'' with the idea that future work will provide additional insight. Primary target audiences include utility operators and engineers who face plant inefficiencies and significant operational and maintenance costs that are associated with ash deposition problems. Pulverized and cyclone-fired coal boilers are addressed specifically, although many of the diagnostics and solutions apply to other boiler types. Logic diagrams, ash deposit types, and boiler symptoms of ash deposition are used to aid the user in identifying an ash deposition problem, diagnosing and verifying root causes, determining remedial measures to alleviate or eliminate the problem, and then monitoring the situation to verify that the problem has been solved. In addition to a step-by-step method for identifying and remediating ash deposition problems, this guideline document (Appendix A) provides descriptions of analytical techniques for diagnostic testing and gives extensive fundamental and practical literature references and addresses of organizations that can provide help in alleviating ash deposition problems.

Physical Description

67 pages

Notes

OSTI as DE00788116

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  • Other Information: PBD: 1 Apr 2001

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  • Report No.: FC26-98FT40321--14
  • Grant Number: FC26-98FT40321
  • DOI: 10.2172/788116 | External Link
  • Office of Scientific & Technical Information Report Number: 788116
  • Archival Resource Key: ark:/67531/metadc722497

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  • April 1, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • March 11, 2016, 4:37 p.m.

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Zygarlicke, Christopher J.; McCollor, Donald P.; Benson, Steven A. & Gunderson, Jay R. COAL-FIRED UTILITY BOILERS: SOLVING ASH DEPOSITION PROBLEMS, report, April 1, 2001; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc722497/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.