Record Display for the EPA National Library Catalog


Main Title Preliminary evaluation of sulfar variability in low-sulfur coals from selected mines /
Author Nelson., A. Carl ;
CORP Author PEDCo Environmental, Inc.
Publisher Environmental Protection Agency, Office of Air and Waste Management, Office of Air Quality Planning and Standards ; For sale by the National Technical Information Service,
Year Published 1977
Report Number EPA/450-3-77-044; EPA-68-02-1321
Stock Number PB-275 000
OCLC Number 03678678
ISBN pbk.
Subjects Coal--Sulfur content--United States ; Coal--United States--Sulfur content
Additional Subjects Sulfur ; Coal ; Concentration(Composition) ; Regulations ; Statistical analysis ; Data analysis ; Variability ; Coal mines ; Tables(Data) ; Mean ; Standard deviation ; Frequency distribution ; Air pollution ; Low sulfur coal ; Air pollution abatement
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 450-3-77-044 Headquarters Library/Washington,DC 03/04/2014
EKBD  EPA-450/3-77-044 Research Triangle Park Library/RTP, NC 09/10/1999
ELBD RPS EPA 450-3-77-044 repository copy AWBERC Library/Cincinnati,OH 05/09/2017
ESAD  EPA 450-3-77-044 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-275 000 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation [178] pages : illustrations ; 28 cm.
Data on the variability of sulfur content and heating value of coal have been obtained from several coal and utility companies. These data have been analyzed to estimate the mean, standard deviation, and the frequency distribution of weight percent sulfur (dry basis) and the impact of this variability on the required average sulfur content to comply with an emission regulation. In order to assess the implications of sulfur variability for compliance with emission regulations, such as those specified by State Implementation Plans(SIP) and New Source Performance Standards (NSPS), the relative standard deviation (RSD) of weight percent sulfur was estimated as a function of the amount of coal sampled and the number of composite samples for the specified averaging period. These RSD's were used to estimate the required average sulfur content to yield 95 and 99 percent compliance with the emission limitation of 1.2 lb SO2/MM Btu. The detailed computations are given for two sizes of power plants, 500 MW and 25 MW (250 MM Btu/hour, the smallest plant covered by the NSPS). As the percent of compliance increases the required average sulfur content decreases and rapidly approaches sulfur levels for which the availability of uncleaned coal to comply with the NSPS would approach zero.
Contract no. 68-02-1321, task no. 41. "Nov. 1977." "EPA/450-3-77-044." Includes bibliographical references (pages 7-1).