scholarly journals Low-rank coal thermal properties and diffusivity: Final report

1987 ◽  
Author(s):  
W.F. Ramirez
Keyword(s):  
Thermal Properties ◽  
Low Rank ◽  
Final Report ◽  
Low Rank Coal

scholarly journals PROMINE

PROMINE ◽  
2017 ◽  
Vol 5 (2) ◽  
pp. 30-35
Author(s):  
Rr. Harminuke Eko Handayani ◽  
RR. Yunita Bayu Ningsih ◽  
Canda Muammal
Keyword(s):  
Thermal Properties ◽  
Low Rank ◽  
Low Rank Coal ◽  
Thermogravimetric Analyzer

Coal is a kind of energy that really close to thermal properties. Low rank coal in Indonesia is hardly tobe used as a raw coal. The making of biobatubara briquette is one of a thing people managed to uselow rank coal. In this research talk about the influence of the pressure in making biobatubara briquetteto know the burning characteristic. The analysis is done by using Thermogravimetric Analyzer. Thepressure that used is 75, 100, 125 and150, in kg/cm2 units. The result of this research showed thattemperature of ITVM between 263-269 ºC , ITFC between 271-274 ºC, PT between 397- 404 ºC , BTbetween 288-290 ºC.

scholarly journals Low-rank coal research: Volume 3, Combustion research: Final report. [Great Plains]

1987 ◽  
Author(s):  
M. D. Mann ◽  
D. R. Hajicek ◽  
B. J. Zobeck ◽  
D. P. Kalmanovitch ◽  
T. A. Potas ◽  
...  
Keyword(s):  
Great Plains ◽  
Low Rank ◽  
Final Report ◽  
Low Rank Coal

scholarly journals Low-rank coal research: Volume 1, Control technology, liquefaction, and gasification: Final report

1987 ◽  
Author(s):  
G.F. Weber ◽  
M.E. Collings ◽  
G.L. Schelkoph ◽  
E.N. Steadman ◽  
C.J. Moretti ◽  
...  
Keyword(s):  
Low Rank ◽  
Final Report ◽  
Control Technology ◽  
Low Rank Coal

scholarly journals Low-rank coal research: Volume 2, Advanced research and technology development: Final report

1987 ◽  
Author(s):  
M.D. Mann ◽  
M.L. Swanson ◽  
S.A. Benson ◽  
L. Radonovich ◽  
E.N. Steadman ◽  
...  
Keyword(s):  
Technology Development ◽  
Low Rank ◽  
Final Report ◽  
Low Rank Coal

INVESTIGATING A LINK BETWEEN LOW-RANK COAL BEARING CARRIZO-WILCOX AQUIFER WATER AND KIDNEY DISEASE IN EAST TEXAS

2018 ◽  
Author(s):  
Jayeeta Chakraborty ◽  
◽  
Robert B. Finkelman ◽  
William H. Orem ◽  
Matthew S. Varonka ◽  
...  
Keyword(s):  
Kidney Disease ◽  
Low Rank ◽  
East Texas ◽  
Low Rank Coal

scholarly journals Surface Chemical Heterogeneity of Low Rank Coal Characterized by Micro-FTIR and Its Correlation with Hydrophobicity

Minerals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 239
Author(s):  
Wei Wang ◽  
Long Liang ◽  
Yaoli Peng ◽  
Maria Holuszko
Keyword(s):  
Surface Chemistry ◽  
Functional Group ◽  
Group Composition ◽  
Contact Angles ◽  
Low Rank ◽  
Surface Chemical ◽  
Carbonyl Groups ◽  
Low Rank Coal ◽  
Different Types ◽  
Aliphatic Carbon

Micro-Fourier transform infrared (micro-FTIR) spectroscopy was used to correlate the surface chemistry of low rank coal with hydrophobicity. Six square areas without mineral impurities on low rank coal surfaces were selected as testing areas. A specially-designed methodology was applied to conduct micro-FTIR measurements and contact angle tests on the same testing area. A series of semi-quantitative functional group ratios derived from micro-FTIR spectra were correlated with contact angles, and the determination coefficients of linear regression were calculated and compared in order to identify the structure of the functional group ratios. Finally, two semi-quantitative ratios composed of aliphatic carbon hydrogen, aromatic carbon hydrogen and two different types of carbonyl groups were proposed as indicators of low rank coal hydrophobicity. This work provided a rapid way to predict low rank coal hydrophobicity through its functional group composition and helped us understand the hydrophobicity heterogeneity of low rank coal from the perspective of its surface chemistry.

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