Washability characteristics of Arkansas and Texas lignites: report of investigations
This report describes the washability characteristics of eleven channel samples of lignite, four from Arkansas and seven from Texas. Only two of the samples, those collected from Dallas County, Arkansas, could be upgraded to meet the current EPA new source performance standard (NSPS) of 1.2 pounds SO/sub 2//MM Btu. The other nine samples, although averaging only a little over 1 percent total sulfur, were relatively high in organic sulfur considering their low Btu/lb value, and could not be upgraded to meet the standard. Physical coal cleaning of these samples, however, provided significant ash reduction which may reduce boiler fouling. It was demonstrated that much of the sodium can be removed from these Arkansas and Texas lignites by ion exchange. Analyses showed 37 to 91% sodium oxide reduction after treatment with a solution containing calcium ions.
- Research Organization:
- Department of Energy, Pittsburgh, PA (USA). Pittsburgh Energy Technology Center
- OSTI ID:
- 5674776
- Report Number(s):
- EPA-600/7-79-149
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
ALKALI METAL COMPOUNDS
ARKANSAS
ASHES
BOILERS
BROWN COAL
CALORIFIC VALUE
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL COMPOSITION
CLEANING
COAL
COAL PREPARATION
COMBUSTION PROPERTIES
COMMINUTION
DATA
DATA FORMS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FOULING
FUELS
INFORMATION
ION EXCHANGE
LIGNITE
NATIONAL ORGANIZATIONS
NORTH AMERICA
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REGULATIONS
REMOVAL
RESIDUES
SODIUM COMPOUNDS
SOUTHWEST REGION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TABLES
TEXAS
US EPA
US ORGANIZATIONS
USA
WASHING