Oil Shale (Feb 2022)

Effect of processing conditions on the improvement of properties and recovering yield of Moroccan oil shale

  • Abdelkrim Abourriche,
  • Mina Oumam,
  • Said Mansouri,
  • Mossaab Mouiya,
  • Yassine Rakcho,
  • Abdelaziz Benhammou,
  • Younes Abouliatim,
  • Jones Alami,
  • Hassan Hannache

DOI
https://doi.org/10.3176/oil.2022.1.04
Journal volume & issue
Vol. 39, no. 1
pp. 61 – 78

Abstract

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In the present work, Moroccon Tarfaya oil shale was treated by acids and different solvents under supercritical conditions, successively. Experimental results showed clearly that residual mineral matter had a significant effect on the yield and composition of the resulting organic fraction. Indeed, theoil yields obtained from some samples, 43% and 56%, respectively, were much higher than that from the sub-layer, 18%. In addition, the yield of recuperation and quality of extracted oils were largely dependent on the nature of solvents (toluene, water, shale oil). Thus, phenol was shown to be a very efficient modifier for the supercritical extraction of organic matter from Tarfaya oil shale with toluene, affording a good yield of recovery and a suitable maturation of organic matter. The pitches prepared by mixing phenol and toluene contained more aromatics and had a high char yield (46%) at 950 °C compared to those obtained by extraction with supercritical toluene alone.

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