Comparison of combustion deposits from bituminous coals and a lignite

Conference · Fri Jan 01 04:00:00 EST 1988 · Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA)

OSTI ID:5340104

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

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1. Univ. of Kentucky, Lexington (USA)

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 combination of computer-controlled SEM (CCSEM) and Moessbauer spectroscopic methods. Similar techniques were used to examine deposits.

• OSTI ID: 5340104
• Report Number(s): CONF-8806316--
• Conference Information: Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA) Journal Volume: 33:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ALKALINE EARTH METAL COMPOUNDS
ASHES
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CALCIUM COMPOUNDS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMPARATIVE EVALUATIONS
DEPOSITS
ELECTRON MICROSCOPY
ENERGY SOURCES
FOSSIL FUELS
FUELS
IRON COMPOUNDS
IRON SULFIDES
LIGNITE
MATERIALS
MICROSCOPY
MINERALOGY
MINERALS
MOESSBAUER EFFECT
OXIDATION
PARTICLE SIZE
PYRITE
RESIDUES
SCANNING ELECTRON MICROSCOPY
SIZE
SPECTROSCOPY
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS