Desulfurization of model FCC gasoline by extraction with ionic liquid and conventional extraction solvents

ABSTRACT

To compare the desulfurization performance of conventional extraction solvents and novel ionic liquid, desulfurization experiments by extraction were conducted on sulfolane, acetonitrile, N-formyl morpholine, and [BPy]BF₄ using model Fluid Catalytic Cracking gasoline (thiophene and n-octane) as feedstock. Results showed that the desulfurization rate of ionic liquid was worse than conventional extraction solvents, but its yield of sweet gasoline was higher, which could reach to 90.36%. Among the four solvents, N-formyl morpholine had the best desulfurization performance, while sulfolane was the most stable extraction agent.

KEYWORDS:

• conventional extraction solvents
• desulfurization
• extraction
• FCC gasoline
• ionic liquid

Acknowledgments

Financial supports for this research, supported by National Natural Science Foundation of China (Grant No. 51404194), and supported by Cultivating fund of Xi'an University of Science and Technology (Grant No. 201705, 201620), are gratefully acknowledged.