Record Display for the EPA National Library Catalog


Main Title Development of a vortex containment combustor for coal combustion systems : project summary /
Other Authors
Author Title of a Work
LaFond, J. F.,
Heap, M. P.,
Seeker, W. R.,
Tyson, T. J.,
Lanier, William Steven,
Publisher U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, Center for Environmental Research Information
Year Published 1989
Report Number EPA/600-S7-89-003
OCLC Number 896325358
Subjects Coal--Combustion--Research
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-S7-89-003 In Binder Headquarters Library/Washington,DC 10/19/2018
EKBD  EPA-600/S7-89-003 Research Triangle Park Library/RTP, NC 10/24/2017
ELBD ARCHIVE EPA 600-S7-89-003 In Binder Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 600-S7-89-003 repository copy AWBERC Library/Cincinnati,OH 02/22/2016
Collation 3 pages ; 28 cm
"Oct. 1989." "EPA/600-S7-89-003."
Contents Notes
Major problems facing the conversion of oil - and gas-fired boilers to coal are derating, inorganic impurities in coal, and excessive pollutant formation (NO[subscript x] and SO[subscript x]). To alleviate these problems a combustion system is desired that has a high firing density, separates and retains fly ash, and is adaptable to viable pollution control technologies. The Vortex Containment Combustor (VCC) has been designed and tested with these objectives in mind. An extensive literature review and the testing of two candidate isothermal systems preceded the design and construction of a bench-scale VCC. Coal combustion tests were performed on the VCC to evaluate its performance in terms of ash retention efficiency, coal burnout, combustion stability, and slag and ash deposition. Results were very promising for both retention efficiency and combustion stability. Fuel injector modifications improved internal slag deposition conditions while maintaining acceptable carbon burnout levels. NO[subscript x] control by staging and reburning technologies was evaluated in the VCC, along with sorbent injection for the control of SOb2s emissions. Both staging and reburning were shown to be effective techniques for reducing NO[subscript x] emissions in the VCC. Improvements in the sorbent injection approach are required to obtain an acceptable degree of SOb2s reduction. Based on particle force balance expressions, scaling criteria have been established for the VCC. Also, the effect of scaling on system pressure drop and heat release on retention efficiency has been evaluated. The VCC has performed successfully at bench-scale. Evaluation at a larger scale would be the next step toward bringing the VCC concept to fruition.