Original scientific paper
Desulfurization of FCC gasoline by extraction with sulfolane and furfural
Tamara Adžamić
; Petroleum and Petrochemical Department, Faculty of Chemical Engineering and Technology, University of Zagreb
Katica Sertić Bionda
; ord. prof., Petroleum and Petrochemical Department, Faculty of Chemical Engineering and Technology, University of Zagreb
Zdenko Zoretić
; INA d.d. Sisak Oil Refinery
Abstract
Extractive desulfurization of FCC gasoline with two solvents (sulfolane and furfural) was studied. Experiments have been carried to determine more suitable solvent with respect to process parameters including temperature, batch time, solvent / FCC gasoline ratio and extraction times. Results show that lower sulfur content in raffinate was achieved with sulfolane at temperatures around 50 şC and solvent / FCC gasoline ratio above 2. This was also verified with statistical analysis of the extractive desulfurization with sulfolane by 23 full factorial design. Maximum desulfurization efficiency was obtained at high levels of temperature and sulfolane / FCC gasoline ratio; time in researched range of values had small impact and minimum sulfur content in raffinate of 196 mg kg-1 was obtained at higher levels of temperature, time and sulfolane / FCC gasoline ratio. Mathematical model that can be used for predicting sulfur content in raffinate after extractive batch process with sulfolane was statistically developed and proven with analysis of variance.
Keywords
liquid extraction; FCC gasoline; desulfurization; sulfolane; furfural; mathematical modeling
Hrčak ID:
41444
URI
Publication date:
25.9.2009.
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