Combustion of spent shales from the Rotem deposit (2). Behavior in oxygen-containing atmospheres

J. Zabicky, A. Wohfarth

Research output: Contribution to specialist publicationArticle


Spent shales prepared by the Fisher method from oil shales of the Rotem deposit were studied in a continuous fluidized bed reactor at 700 - 900°C under atmospheric pressure, using mixtures of nitrogen, oxygen and carbon dioxide as the fluidizing gas. Combustion of the organic residue takes place together with other processes, the most important of which are 'decomposition of calcium carbonate and gasification of the organic residue by carbon dioxide produced by combustion and carbonate decomposition. The extent to which each of these reactions takes place determines wether the particles undergo predominantly pyrolytic or oxidative processes. This depends on temperature, composition of the fluidizing gas, particle size of the spent shales, and mean residence time of the particles in the reactor.

Original languageEnglish
Number of pages3
Specialist publicationErdoel Erdgas Kohle/EKEP
StatePublished - 1 Sep 1991

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology
  • Geotechnical Engineering and Engineering Geology


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