Relationships between coal constitution, thermoplastic properties and liquefaction behavior of coals and vitrinite concentrates from the lower Kittanning seam. [Ph. D. Thesis]

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1981

OSTI ID:5273943

Senftle, J T

The main objective of this study was to assemble a base of coal data from a single seam in order to reveal the systematic interrelationships among the chemical and petrographic compositions, and the liquefaction behavior and thermoplastic properties of coal from a single coal seam. The Lower Kittanning seam in western Pennsylvania and eastern Ohio was selected because of its broad extent and range in composition. The lateral variability of composition within the Lower Kittanning seam in western Pennsylvania was described using data from 41 samples included in the Penn State Coal Sample Bank and 81 samples from the Pennsylvania Geological Survey. The liquefaction behavior and thermoplastic properties of any coal would seem to be dependent upon the constitution of the parent coal; however, the petrographic, physical and chemical heterogeneity of coal and complexity of the liquefaction and thermoplasticity processes make a study of the interrelationshps extremely difficult. Consequently, a factor analysis was performed on a total of 81 samples of whole coals and vitrinite concentrates from the Lower Kittanning seam, ranging in rank from high volatile C to low volatile bituminous. This analysis indicated that both liquefaction conversion and some of the measured thermoplastic properties had significant loadings with rank-dependent variables. The content of reactive macerals did not group with either liquefaction conversion or parameters of thermoplastic behavior. Three bivariate and two multivariate regression equations were developed for estimating conversion of coals from the Lower Kittanning seam. These equations successfully predicted the liquefaction conversion of an additional 30 coal samples from the eastern coal province.

• OSTI ID: 5273943
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600* -- Coal
Lignite
& Peat-- Properties & Composition
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
COAL
COAL LIQUEFACTION
COAL RANK
CORRELATIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
LIQUEFACTION
MACERALS
MATERIALS
MATHEMATICS
MECHANICAL PROPERTIES
MICROSCOPY
PETROGRAPHY
PLASTICITY
REGRESSION ANALYSIS
RESIDUES
STATISTICS
THERMOCHEMICAL PROCESSES