Energy-efficient sulfone separation process for the production of ultralow sulfur diesel by two-step adsorption

Sam Mok Lim, Jong Nam Kim, Jihye Park, Sang Sup Han, Jong Ho Park, Tae Sung Jung, Hyung Chul Yoon, Sung Hyun Kim, Chang Hyun Ko

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A three-step process for producing ultralow sulfur diesel (S concentration < 10 ppm) is experimentally investigated, consisting of (1) the separation of sulfone in diesel (S concentration > 150 ppm) by adsorption on silica and the subsequent regeneration of silica using a polar solvent, (2) the separation of sulfone in methanol by adsorption on activated carbon and the subsequent regeneration of activated carbon using a nonpolar solvent, and (3) the distillation for the recovery of a nonpolar solvent. Various polar solvents (i.e., acetone and methanol) and nonpolar solvents (i.e., n-butane, n-pentane, and n-hexane) were considered. Methanol and n-butane were found to be good solvents for regenerating sulfone-adsorbed silica and sulfone-adsorbed activated carbon, respectively. The two-step adsorption process was able to substantially reduce the energy consumption during the distillation because the heat of vaporization (320 kJ/kg) of n-butane is much lower than that (1104 kJ/kg) of methanol. This study showed the potential to produce ultralow sulfur diesel with low energy consumption in a continuous separation process.

Original languageEnglish
Pages (from-to)2168-2174
Number of pages7
JournalEnergy and Fuels
Volume26
Issue number4
DOIs
Publication statusPublished - 2012 Apr 19

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Energy-efficient sulfone separation process for the production of ultralow sulfur diesel by two-step adsorption'. Together they form a unique fingerprint.

  • Cite this

    Lim, S. M., Kim, J. N., Park, J., Han, S. S., Park, J. H., Jung, T. S., Yoon, H. C., Kim, S. H., & Ko, C. H. (2012). Energy-efficient sulfone separation process for the production of ultralow sulfur diesel by two-step adsorption. Energy and Fuels, 26(4), 2168-2174. https://doi.org/10.1021/ef201964v