||Low-sulfur Western coal use in existing small and intermediate size boilers /
Maloney, Kenneth L. ;
Moilanen, George L. ;
Langsjoen, P. L.
||KVB Engineering, Inc., Tustin, CA.;Industrial Environmental Research Lab., Research Triangle Park, NC.
|| Environmental Protection Agency, Office of Research and Development, Office of Energy, Minerals, and Industry, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service,
Coal--Sulfur content--United States. ;
Coal--United States--Sulphur content
Air pollution ;
Sulfur oxides ;
Nitrogen oxides ;
Carbon monoxide ;
Industrial wastes ;
Combustion products ;
Performance evaluation ;
Design criteria ;
Process charting ;
Low sulfur coal ;
Air pollution abatement ;
||Region 4 Library/Atlanta,GA
||Research Triangle Park Library/RTP, NC
||Region 10 Library/Seattle,WA
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||xx, 422 p. : ill. ; 28 cm.
The report gives results of testing of 10 representative coal-fired boilers in the Upper-Midwest, including an assessment of SOx, NOx, CO, unburned HC, and particulate emissions from these units, as well as an assessment of the operational impact of coal switching. The study showed that western subbituminous coals can be substituted for eastern bituminous coals as an industrial boiler fuel. Western coals are compatible with industrial coal-fired units of current design. Two unit types of older design (underfed and traveling grate stokers) experienced difficulty burning western coal. In some cases, the boiler's maximum load capacity had to be limited, a problem that can be eliminated by predrying the coal or by increasing superheat steam attemperation capacity. Western subbituminous coals were superior to eastern coals in terms of SOx, NOx, particulate, and unburned HC emissions. Western coals could be fired at lower excess air and exhibited substantially lower combustible losses than eastern coals. The size of delivered western coal was a problem in most of the stoker-fired units tested: it generally had too large a percentage of fine coal, caused by its poor weathering characteristics. Stoker performance on western coal can be improved by sizing the coal at the point of use, to reduce delivery distances to about 200 miles.
Prepared for Environmental Protection Agency, Office of Research and Development. Contract no. 68-02-1863, program element no. EHE624A. July 1978. Includes bibliographical references.