Fouling formation in 575 MW tangential-fired pulverized-coal boiler

E. Bar-Ziv, Y. Berman, R. Saveliev, M. Perelman, E. Korytnyi, B. Davidson, B. Chudnovsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations


Over the past years we have gained experience in employing varying types of coal fired in the same boiler. Consequently, we developed evaluation criteria regarding the operation of these coals. In the present study we evaluated fouling propensity of two bituminous South African coals Billiton-Prime and Anglo-Kromdraai (AKD). From an experimental work carried out in a 50 kW test facility where we obtained emissivity and thermal resistance of the two coal ashes. We also developed a new method for evaluating fouling in full-scale utility boilers that is based on adhering of an ash particle depending on its temperature and velocity vector at the boundary layer of the water-walls. The flow and temperature fields were determined by computational fluid dynamic (CFD) simulations. We used the emissivity and thermal resistance determined from the test furnace in the CFD calculations to evaluate fouling in the combustion chamber of a 575 MW tangential-fired utility boiler when the two bituminous coals were fired. Mapping of the fouling locations that are mostly to occur were determined and this behavior fit the experience from the power station and data obtained for these two coals.

Original languageEnglish
Title of host publicationProceedings of the ASME Power Conference 2009
Number of pages7
StatePublished - 1 Dec 2009
Event2009 ASME Power Conference - Albuquerque, NM, United States
Duration: 21 Jul 200923 Jul 2009

Publication series

NameAmerican Society of Mechanical Engineers, Power Division (Publication) PWR


Conference2009 ASME Power Conference
Country/TerritoryUnited States
CityAlbuquerque, NM


  • Bituminous coal
  • Combustion behavior
  • Fouling
  • Heating furnace
  • Industrial utility boiler

ASJC Scopus subject areas

  • Mechanical Engineering
  • Energy Engineering and Power Technology


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