Effects of coal structure and processing conditions on organic effluents from slagging fixed-bed gasification

Conference · Mon Jan 01 04:00:00 EST 1979 · Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)

OSTI ID:6753452

Olson, J K; Schobert, H H

Spray-washer samples (which contained tar, oils, water vapor, and coal particles removed from the existing raw gas stream) from a 1 ton/hr pilot plant representing gasification runs with three coals (Indian Head lignite, Rosebud subbituminous, and Gascoyne lignite) at a range of conditions were obtained at the end of the runs and separated into tar and liquid on the basis of phase color differences. Solids were separated from the tar by Soxhlet extraction with methylene chloride, and the extracted organics analyzed by gas chromatography and liquid chromatography, while the solids were subjected to elemental analysis for comparison with the feed coals. The liquor was solvent extracted at pH 7 and pH 1 with both methylene chloride and ether, and the extracted organics analyzed by gas chromatography and liquid chromatography. The moisture and ash-free carbon content of the coal plays the most predominant role in determining the relative amounts of compound types in the organic extracts from tar and liquor. Thus, the effluent composition is dependent upon the molecular composition of the coal. The data obtained are presented and discussed.

• Research Organization: Dept. of Energy, Grand Forks Energy Technol. Cent.
• OSTI ID: 6753452
• Report Number(s): CONF-790917-
• Conference Information: Journal Name: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States) Journal Volume: 24:3
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
010800* -- Coal
Lignite
& Peat-- Waste Management
BROWN COAL
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHEMICAL EFFLUENTS
CHROMATOGRAPHY
COAL
COAL GASIFICATION
COAL TAR
ENERGY SOURCES
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
GAS CHROMATOGRAPHY
GASIFICATION
LIGNITE
LIQUID COLUMN CHROMATOGRAPHY
LIQUID WASTES
MATERIALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PILOT PLANTS
SEPARATION PROCESSES
SUBBITUMINOUS COAL
TAR
THERMOCHEMICAL PROCESSES
WASTES