Optimization of two-stage liquefaction of Tanito Harum coal with FeNi catalyst supported on carbon black

U. Priyanto, K. Sakanishi, O. Okuma, S. D. Sumbogo Murti, I. Watanabe, Y. Korai, I. Mochida

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Two-stage liquefaction of Tanito Harum coal (Indonesian sub-bituminous coal) was examined in an autoclave of 50 mL capacity at various temperatures for the first stage and various reaction times for the first and second stages under the hydrogen pressure of 15 MPa, using Fe(10 wt %)Ni(10 wt %) catalyst supported on carbon nanoparticles (Ketjen Black:KB). When the total reaction time in the first and second stages was fixed to 120 min, the best conditions of two-stage liquefaction were at 380 °C for 15 min in the first stage and then at 450 °C for 105 min in the second stage at a hydrogen pressure of 15 MPa, providing the maximum oil yields of 80 and 66 wt % (daf coal base) with or without H-donor solvent, respectively. The results also showed that these conditions produced fewer amounts of hydrocarbon gases and lower sulphur content in the oil. The conversion of H-donor solvent (tetralin) after the liquefaction was much lower (13%) than that of the single-stage liquefaction (21%). In addition, the residue yield was much lower (9%) than that of the single-stage (15%) in the solvent-free liquefaction. It is confirmed that prolonged reaction time in the second stage is more favourable than in the first stage. The effects of the first-stage (low temperature) liquefaction both with and without solvent are discussed to explain the optimum conditions of two-stage liquefaction.

Original languageEnglish
Pages (from-to)856-862
Number of pages7
JournalEnergy and Fuels
Volume15
Issue number4
DOIs
Publication statusPublished - Jul 1 2001

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Soot
Coal
Liquefaction
Carbon black
Catalyst supports
Hydrogen
Oils
Bituminous coal
Autoclaves
Hydrocarbons
Sulfur
Carbon
Gases
Nanoparticles
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Priyanto, U., Sakanishi, K., Okuma, O., Sumbogo Murti, S. D., Watanabe, I., Korai, Y., & Mochida, I. (2001). Optimization of two-stage liquefaction of Tanito Harum coal with FeNi catalyst supported on carbon black. Energy and Fuels, 15(4), 856-862. https://doi.org/10.1021/ef0002647

Optimization of two-stage liquefaction of Tanito Harum coal with FeNi catalyst supported on carbon black. / Priyanto, U.; Sakanishi, K.; Okuma, O.; Sumbogo Murti, S. D.; Watanabe, I.; Korai, Y.; Mochida, I.

In: Energy and Fuels, Vol. 15, No. 4, 01.07.2001, p. 856-862.

Research output: Contribution to journalArticle

Priyanto, U, Sakanishi, K, Okuma, O, Sumbogo Murti, SD, Watanabe, I, Korai, Y & Mochida, I 2001, 'Optimization of two-stage liquefaction of Tanito Harum coal with FeNi catalyst supported on carbon black', Energy and Fuels, vol. 15, no. 4, pp. 856-862. https://doi.org/10.1021/ef0002647
Priyanto U, Sakanishi K, Okuma O, Sumbogo Murti SD, Watanabe I, Korai Y et al. Optimization of two-stage liquefaction of Tanito Harum coal with FeNi catalyst supported on carbon black. Energy and Fuels. 2001 Jul 1;15(4):856-862. https://doi.org/10.1021/ef0002647
Priyanto, U. ; Sakanishi, K. ; Okuma, O. ; Sumbogo Murti, S. D. ; Watanabe, I. ; Korai, Y. ; Mochida, I. / Optimization of two-stage liquefaction of Tanito Harum coal with FeNi catalyst supported on carbon black. In: Energy and Fuels. 2001 ; Vol. 15, No. 4. pp. 856-862.
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