Results 181 to 190 of about 4,596 (226)

Viscosity modification of flash pyrolysis tars

Fuel, 1983
Abstract A study was made of the effect of a number of additives on the viscosity of a characteristic tar produced by the flash pyrolysis of indigenous Australian coals. The results indicate that aliphatic compounds are more effective than aromatic compounds in lowering the viscosity.
B POPPLETON, A TRIFFETT
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Kinetics of the pyrolysis of utah tar sands

The Canadian Journal of Chemical Engineering, 1987
AbstractUtah tar sands have been pyrolyzed experimentally in a tubular furnace into a stream of nitrogen. Various condensate products have been collected and analyzed, and the pyrolyzed sands have been analyzed for coke and unreacted bitumen. The kinetics of the pyrolysis appeared to be second order under conditions of approximately constant ...
C. A. Lechner, M. E. Findley, A. I. Liapis   +2 more
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Pyrolysis of lignin in coal-tar pitch

Solid Fuel Chemistry, 2017
The pyrolysis of hydrolytic lignin in coal-tar pitch over a temperature range of 320–380°C was studied in a batch reactor at atmospheric pressure. As a result of reactions with pitch, lignin underwent dissolution and destruction with the formation of compounds that remained in the reactor or were released from the reactor as liquid and gaseous products.
E. I. Andreikov, Yu. A. Dikovinkina, M. G. Pervova, O. V. Krasnikova   +3 more
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Slow pyrolysis experimental investigation on the tar formation and its pyrolysis behavior characteristics

Chemical Engineering Research and Design
Kaili Xu, Xiwen Yao
exaly   +2 more sources

Pyrolysis of polycarbonate in coal-tar pitch

Solid Fuel Chemistry, 2016
The thermal degradation of polycarbonate in coal-tar pitch was studied. The composition of the liquid products of pyrolysis was determined with the use of gas chromatography–mass spectrometry; the modified coal-tar pitch and the pyrolysis residue were studied by Fourier transform IR spectroscopy, elemental analysis, and the determination of softening ...
E. I. Andreikov, L. F. Safarov, M. G. Pervova, A. V. Mekhaev   +3 more
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Comparison of two methods of measuring wood pyrolysis tar

Journal of Chromatography A, 2007
Two methods for the sampling and analysis of tar produced from wood pyrolysis were compared. The first method used a conventional cold-trapping technique in solvent-filled impingers followed by liquid injection. The second one is a new application of multibed solid-phase adsorbent (SPA) tubes followed by thermal desorption (TD).
Dufour, A., Girods, Pierre, Masson, E., Normand, S., Rogaume, Y., Zoulalian, A.   +5 more
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The characterisation of tar from the pyrolysis of animal bones

Fuel, 2004
This report outlines results of an investigation of the composition of bone pyrolysis tar produced in Mongolia. The liquid product (tar) yield was low: ∼4.9%. The elemental composition of the tar was C: 73.3%, H:10.1%, N: 11.3%, O: 5.3%. Size-exclusion chromatograms signalled the presence of generally smaller mass material than coal tars and pitches ...
B Purevsuren, B Avid, T Gerelmaa, Ya Davaajav, T.J Morgan, A.A Herod, R Kandiyoti   +6 more
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Characterization of pyrolysis tars from Canadian coals

Fuel, 1987
Tars produced by rapid pyrolysis of several Canadian coals have been characterized. Raw tars were separated into solvent fractions which were analysed by a combination of PONA separation by high-performance liquid chromatography, high-resolution capillary gas chromatography and chromatography-mass spectrometry.
K TEO, A WATKINSON
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Properties of coal tar characterized by slight pyrolysis

Coke and Chemistry, 2014
The behavior of coal tars with different levels of pyrolysis in thermal fractionation is compared in the laboratory. The properties and group composition of the nonboiling residues (medium-temperature pitch) obtained by the distillation of coal tars at different temperatures, in comparable conditions, is investigated.
F. F. Cheshko, N. P. Skripchenko, L. P. Bannikov, V. V. Karchakova, E. E. Prokhach   +4 more
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Pyrolysis of Morupule Coal Dust for the Production of Tar

2019 7th International Renewable and Sustainable Energy Conference (IRSEC), 2019
The study on coal dust pyrolysis was carried out and three products were obtained, tar, char and gas. Pyrolysis of Morupule coal dust was carried out at different temperature to determine how change of temperature affect tar yield. Temperatures were varied from 400°C, then 500°C, 550°C and lastly at 600°C.
Amogelang Medupe, Edison Muzenda, Mpho Rapoo, Nhlanhla Nkosi, Joshua Gorimbo   +4 more
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