Liquefaction of Yallourn brown coal at low pressures and rapid heating rates

Isao Mochida, Yuji Moriguchi, Takaaki Shimohara, Yozo Korai, Hiroshi Fujitsu, Kenjiro Takeshita

Research output: Contribution to journalArticle

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Abstract

Liquefaction of Yallourn brown coal in solvents at high temperature for short contact times and low pressures has been studied. Very high asphaltene yields are achieved with hydrogen-donating solvents (hydrogenated Ashland pitch A240, hydrogenated anthracene oil, and hydrogenated pyrene). For hydrogenated pyrene, yields of almost 90% were obtained during reaction at 450°C for 10 min or at 510°C for 1 min. The average molecular weight of the asphaltene found was 270, with 40 wt% being accounted for by three-and four-ring polynuclear hydrocarbons. The effect of liquefaction temperature, time, and solvents on the asphaltene yield have been examined to clarify the properties required for the solvent under the present conditions used. The behaviour of the asphaltene during pyrolysis and hydrotreatment has also been studied. Some mechanistic aspects of high-temperature, short contact time liquefaction are discussed with regard to the reactivities of the brown coal and the solvents.

Original languageEnglish
Pages (from-to)1014-1019
Number of pages6
JournalFuel
Volume61
Issue number10
DOIs
Publication statusPublished - Jan 1 1982

Fingerprint

Coal
Lignite
Liquefaction
Heating rate
Pyrene
Anthracene
Hydrocarbons
Temperature
Hydrogen
Oils
Pyrolysis
Molecular weight
asphaltene
pyrene

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Cite this

Mochida, I., Moriguchi, Y., Shimohara, T., Korai, Y., Fujitsu, H., & Takeshita, K. (1982). Liquefaction of Yallourn brown coal at low pressures and rapid heating rates. Fuel, 61(10), 1014-1019. https://doi.org/10.1016/0016-2361(82)90102-8

Liquefaction of Yallourn brown coal at low pressures and rapid heating rates. / Mochida, Isao; Moriguchi, Yuji; Shimohara, Takaaki; Korai, Yozo; Fujitsu, Hiroshi; Takeshita, Kenjiro.

In: Fuel, Vol. 61, No. 10, 01.01.1982, p. 1014-1019.

Research output: Contribution to journalArticle

Mochida, I, Moriguchi, Y, Shimohara, T, Korai, Y, Fujitsu, H & Takeshita, K 1982, 'Liquefaction of Yallourn brown coal at low pressures and rapid heating rates', Fuel, vol. 61, no. 10, pp. 1014-1019. https://doi.org/10.1016/0016-2361(82)90102-8
Mochida I, Moriguchi Y, Shimohara T, Korai Y, Fujitsu H, Takeshita K. Liquefaction of Yallourn brown coal at low pressures and rapid heating rates. Fuel. 1982 Jan 1;61(10):1014-1019. https://doi.org/10.1016/0016-2361(82)90102-8
Mochida, Isao ; Moriguchi, Yuji ; Shimohara, Takaaki ; Korai, Yozo ; Fujitsu, Hiroshi ; Takeshita, Kenjiro. / Liquefaction of Yallourn brown coal at low pressures and rapid heating rates. In: Fuel. 1982 ; Vol. 61, No. 10. pp. 1014-1019.
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