Applications of Advanced Technology to Ash-Related Problems in Boilers

1. Front Matter

   Pages i-x

   PDF

2. Ash Formation, Deposition, Corrosion, and Erosion in Conventional Boilers

   • Steven A. Benson, Edward N. Steadman, Christopher J. Zygarlicke, Thomas A. Erickson

   Pages 1-15

3. Research Needs of the Power Industry

   • Richard W. DeSollar

   Pages 17-25

4. Evolutionary Changes in Furnace Combustion Conditions Which Affect Ash Deposition in Modern Boilers

   • David Fitzgerald

   Pages 27-39

5. The UK Collaborative Research Programme on Slagging Pulverised Coal-Fired Boilers: Summary of Findings

   • W. H. Gibb

   Pages 41-65

6. Ash Deposit Properties and Radiative Transfer in Coal Fired Plant — Current Understanding and New Developments

   • T. F. Wall, S. P. Bhattacharya, L. L. Baxter, B. C. Young, A. A. Grisanti

   Pages 67-82

7. Rates and Mechanisms of Strength Development in Low-Temperature Ash Deposits

   • John P. Hurley, Jan W. Nowok, Tina M. Strobel, Cathy A. O’Keefe, Jay A. Bieber, Bruce A. Dockter

   Pages 83-96

8. Deposit Formation during the Co-Combustion of Coal-Biomass Blends

   • K. R. G. Hein, T. Heinzel, A. Kicherer, H. Spliethoff

   Pages 97-116

9. Quantification of Deposit Formation Rates as Functions of Operating Conditions and Fraction of Biomass Fuel Used in a Converted PC Boiler (100 MW)

   • Anders Nordin, Bengt-Johan Skrifvars

   Pages 117-127

10. In Situ Measurements of Boiler Ash Deposit Emissivity and Temperature in a Pilot-Scale Combustion Facility

    • David W. Shaw, Scott M. Smouse

    Pages 129-140

11. Erosion-Oxidation of Carbon Steel and Deposition of Particles on a Tube during Combustion of Coal-Based Fuels in an Industrial Boiler

    • James J. Xie, Peter M. Walsh

    Pages 141-159

12. Laboratory Measurements of Alkali Metal Containing Vapors Released during Biomass Combustion

    • David C. Dayton, Thomas A. Milne

    Pages 161-185

13. An Improved Ash Fusion Test

    • Charles D. A. Coin, Hakan Kahraman, Adrian P. Peifenstein

    Pages 187-200

14. An Assessment of Coal-Ash Slagging Propensity Using an Entrained Flow Reactor

    • I. S. Hutchings, S. S. West, J. Williamson

    Pages 201-222

15. Mechanisms of Ash Fouling during Low-Rank Coal Combustion

    • Donald P. McCollor, Christopher J. Zygarlicke, Steven A. Benson

    Pages 223-235

16. Correlating the Slagging of a Utility Boiler with Coal Characteristics

    • Rod Hatt

    Pages 237-244

17. Excluded / Included Mineral Matter and Its Size Distribution Relative Significance on Slagging and Fouling Characteristics

    • R. P. Gupta, X. He, R. Ramaprabhu, T. F. Wall, I. Kajigaya, S. Miyamae et al.

    Pages 245-264

18. Studies on Ash Species Release during the Pyrolysis of Solid Fuels with a Heated Grid Reactor

    • Tuomas Valmari, Esko I. Kauppinen, Terttaliisa Lind, Minna Kurkela, Antero Moilanen, Riitta Zilliacus

    Pages 265-280

19. Iron Oxidation State and Its Effect on Ash Particle Stickiness

    • L. E. Bool III, J. J. Helble

    Pages 281-292

20. Investigation of Mechanisms for the Formation of Ash Deposits for Two Powder River Basin Coals

    • Galen H. Richards, John N. Harb, Larry L. Baxter

    Pages 293-308

This book addresses the behavior of inorganic material in combustion systems. The past decade has seen unprecedented improvements in understanding the rates and mecha­ nisms of inorganic transformations and in developing analytical tools to predict them. These tools range from improved fuel analysis procedures to predictive computer codes. While this progress has been met with great enthusiasm within the research community, the practices of the industrial community remain largely unchanged. The papers in this book were selected from those presented at an Engineering Foundation Conference of the same title. All have been peer reviewed. The intent of the conference was to illustrate the application of advanced technology to ash-related problems in boilers and, by so doing, engage the research and industrial communities in more productive dialog. Those attending the conference generally felt that we were successful on these counts. We also engaged the industrial community to a greater extent than ever before in the conference discussion and presentation. We hope these proceedings will facilitate a continued and improved interaction between industrial and research communities. Behavior of inorganic material has long been recognized as one of the major considerations affecting the design and operation of boilers that burn ash-producing fuels. The practical problems associated with the behavior are sometimes catastrophic and spec­ tacular, ranging from major slag falls that damage the bottom of furnaces to complete plugging of convection passes.

• combustion
• corrosion
• deposits
• design
• development

• Sandia National Laboratories, Livermore, USA

  Larry Baxter

• Central Illinois Public Service, Springfield, USA

  Richard DeSollar

Policies and ethics