Results 191 to 200 of about 4,596 (226)

CONTINUOUS HYDROGENATION OF FLASH PYROLYSIS COAL TAR

Liquid Fuels Technology, 1984
ABSTRACT High melting tars from the flash pyrolysis of Millmerran coal have been upgraded to mobile liquid products by continuous hydrogenation over a fluidized nickel molybdate catalyst. The hydrogenation unit developed specifically for this purpose la described and changes In properties of the tar during hydrogenation are discussed.
P. C. Wailes, A. F. Faux
openaire   +1 more source

Average structural analysis of tar obtained from pyrolysis of wood

Bioresource Technology, 2010
Conventional analytical methods such as (1)H NMR, vapor pressure osmometry (VPO) and elemental analysis were used to characterize the tar obtained from pyrolysis of pine. The major fraction of tar obtained during pyrolysis of pine at different temperatures was the insoluble fraction in n-heptane which corresponds to asphaltenes; this fraction was ...
Diana, López, Nancy, Acelas, Fanor, Mondragón   +2 more
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Structural Characterization of Oil Component of High Temperature Pyrolysis Tars

Energy Sources, 2005
Tar samples obtained through high temperature carbonization of three different bituminous coals were separated into oil, asphaltene and preasphaltene fractions by soxhlet extraction. The oil fraction was further separated into parafinic, neutral aromatic and polar aromatic sub-fractions by silica gel chromatography.
Toroglu, I, Piskin, S, Sutcu, H
openaire   +3 more sources

Coal-Tar Pitch: Composition and Pyrolysis Behavior

2003
I. Introduction 264II. Coal-Tar Pitch Preparation 266III. Coal-Tar Pitch Composition 269 A. Bulk Characterization of Pitches 270 B. Features of Coal-Tar Pitch Composition 271 C. Pitch Fractionation 273 D. Primary Quinoline Insolubles 280IV. Coal-Tar Pitch Pyrolysis Behavior 281 A. Principles of Pitch Carbonization 281 B. Carbonization of Model Aromatic
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Fungicidal value of wood tar from pyrolysis of treated wood

Waste Management, 2007
The objective of the paper was to estimate the fungicidal value of wood tar extracted as a product of pyrolysis of wood previously treated with either creosote oil or CCB-type salt preservative. The effectiveness of wood treated with one of these two wood tar residuals was compared to the effectiveness of wood treated with virgin creosote oil (type WEI-
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Secondary reactions of tar in coal pyrolysis

1984
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1984. ; MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE. ; Bibliography: leaves 562-586. ; by Michael Anthony Serio. ; Ph.D.
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Molecular Dynamics of Catalytic Pyrolysis on Tar from Tar-Rich Coal

2023
Jia Yang, Liu Yuling, Shu Hao, Penghe Zhao, Zhuoran Wang, Dou Chuanchuan, Lei Lin, Feifei Lian   +7 more
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Thermal conversions of heavy pyrolysis tar

Chemistry and Technology of Fuels and Oils, 1985
V. V. Tokarev, L. P. Gilyazetdinov, N. P. Uglev, A. V. Sherstobitov   +3 more
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Influence of pyrolysis temperature on the aromatic fraction of flash pyrolysis tars

Fuel, 1980
Philip J. Collin, Ralph J. Tyler, Michael A. Wilson   +2 more
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Hydrorefining of Flash Pyrolysis Coal Tar

1979
S. C. CHE, S. A. QADER, E. W. KNELL
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