NDLI: Fouling Formation in 575 MW Tangential-Fired Pulverized-Coal Boiler

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Bar-Ziv, E. Berman, Y. Saveliev, R. Perelman, M. Korytnyi, E. Davidson, B. Chudnovsky, B.
Copyright Year	2009
Abstract	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.
Sponsorship	Power Division
Starting Page	19
Ending Page	25
Page Count	7
File Format	PDF
ISBN	9780791843505
DOI	10.1115/POWER2009-81035
e-ISBN	9780791838536
Conference Proceedings	ASME 2009 Power Conference
Language	English
Publisher Date	2009-07-21
Publisher Place	Albuquerque, New Mexico, USA
Access Restriction	Subscribed
Subject Keyword	Industrial utility boiler Combustion behavior Fouling Heating furnace Bituminous coal Furnaces Boilers Coal
Content Type	Text
Resource Type	Article

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