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Desulfurization of Petroleum Coke in Aluminium Industry

Askari, Hadis | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50807 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Khorasheh, Farhad; Soltanali, Saeed; Baghalha, Morteza; Tayebi, Shokufeh
  7. Abstract:
  8. In this study, desulfurization of petroleum coke has been investigated for use in aluminum industry. To reduce sulfur content in petroleum coke, desulfurization has been investigated by two methods of solvent extraction and molten caustic leaching. The method of molten caustic leaching at temperatures of 400-600 °C has been investigated. Other effective parameters on the desulfurization of petroleum coke are the mass ratio of alkali to feed (petroleum coke) in the range of 0.5-1.5 and the time of 1-3 hour and the mesh size of 200-600 micron. In this study, the conditions of desulfurization of petroleum coke using potassium hydroxide have been investigated. Results show that by using the Taguchi L9 model, the maximum desulfurization of petroleum coke was achieved by molten caustic leaching method, in a mass ratio of alkali to coke 1.5, temperature 600 °C, time 1 hour and mesh size 400 micron. Also, the effect of each parameter is specified. The changes that have been made to the basic coke groups are characterized by FTIR analysis, as well as changes in the physical and chemical properties of coke have been discussed through the analysis of SEM-EDX, TGA and XRD
  9. Keywords:
  10. Delayed Coking ; Petroleum Coke ; Desulfurizing ; Taguchi Method ; Anode Coke ; Pottasium Hydroxide

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