Development of SO2 emission limits considering sulfur variability in coal

Conference · Thu Jan 01 04:00:00 EST 1987 · Proceedings, Annual Meeting, Air Pollution Control Association; (USA)

OSTI ID:5105421

Meyer, E L; Pace, T G ^[1]

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1. U.S. Environmental Protection Agency, Research Triangle Park, NC (US)

Sulfur dioxide (SO/sub 2/) emission limits provide means of assuring that emissions from a source will not cause violations of National Ambient Air Quality Standards (NAAWS) for SO/sub 2/. Such limits are often derived through consideration of plume rise characteristics and atmospheric dilution in dispersion models. In the past, limits specifying allowable sulfur content of fuel (i.e., lbs SO/sub 2/ emitted per million BTU of energy produced) have been derived assuming that sulfur content of a particular fuel supply is essentially invariant. However, there is evidence that this latter assumption is not valid for coal. For example, a recent review of data for coal consumer by large (> 150 MW) boilers suggests that variability of daily average sulfur content may be approximated by a log normal distribution having a geometric standard deviation (GSD/sub 24/) ranging from about 1.05 - 1.2. Random variability of coal sulfur content consumed by small coal-fired boilers may be even larger, since consumption of small amounts of coal provides less opportunity for extreme random deviations from the norm to average out'' during a day. The discussion in this paper assumes random variability in coal sulfur content is adequately characterized by a log normal distribution. Therefore, the median and geometric mean values are equivalent and are used interchangeably throughout this paper.

• OSTI ID: 5105421
• Report Number(s): CONF-870695--
• Conference Information: Journal Name: Proceedings, Annual Meeting, Air Pollution Control Association; (USA) Journal Volume: 3
• Country of Publication: United States
• Language: English

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54 ENVIRONMENTAL SCIENCES
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AIR POLLUTION CONTROL
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CARBONACEOUS MATERIALS
CHALCOGENIDES
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COMBUSTION PRODUCTS
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ENERGY SOURCES
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POWER PLANTS
SULFUR COMPOUNDS
SULFUR CONTENT
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS