Comparison of combustion deposits from bituminous coals and a lignite

Conference · Wed Jun 01 04:00:00 EDT 1988 · Am. Chem. Soc., Div. Gas Fuel Chem., Prepr.; (United States)

OSTI ID:6594480

Huggins, F E; Huffman, G P ^[1]; Levasseur, A A ^[2]

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1. Departments of Geological Sciences and Chemical Engineering, Univ. of Kentucky, Lexington, KY (US)
2. Kreisinger Development Lab., Combustion Engineering, Inc., P.O. Box 500, Windsor, CT (US)

Deposits generated during combustion of pulverized coals are determined to a large extent by the type, relative amounts, size, and association of the different inorganic species present in the coal. In this investigation, the authors examine and compare the inorganic constituents in various samples of two bituminous coals and of a Texas lignite and the deposits generated from these coals in the same test furnace. Whereas the principal basic mineral in the bituminous coals is pyrite, which is found in these coals in relatively coarse particle form, the principal component in the lignite is carboxyl-bound calcium, which is highly dispersed throughout the lignite macerals. These situations can be considered to represent different ends of the spectrum with respect to the size and distribution of the major basic component of the inorganic species. The mineral matter of the coals was characterized using a combination of computer-controlled SEM (CCSEM) and Mossbauer spectroscopic methods. Similar techniques were used to examine deposits.

• OSTI ID: 6594480
• Report Number(s): CONF-8806136-
• Conference Information: Journal Name: Am. Chem. Soc., Div. Gas Fuel Chem., Prepr.; (United States) Journal Volume: 33:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
011000 -- Coal
Lignite
& Peat-- Reserves
Geology
& Exploration
014000* -- Coal
Lignite
& Peat-- Combustion
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTION PROPERTIES
COMPARATIVE EVALUATIONS
DEPOSITS
ELECTRON MICROSCOPY
ENERGY SOURCES
FEDERAL REGION VI
FLUIDIZED-BED COMBUSTION
FOSSIL FUELS
FUELS
FURNACES
IRON COMPOUNDS
IRON SULFIDES
LIGNITE
MACERALS
MATERIALS
MICROSCOPY
MINERALOGY
MINERALS
MOESSBAUER EFFECT
NORTH AMERICA
OXIDATION
PARTICLE SIZE
PULVERIZED FUELS
PYRITE
SCANNING ELECTRON MICROSCOPY
SIZE
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TEXAS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
USA