Solvent Screening for Cyclopentane Purification Based on COSMO

Abstract

Abstract-Separation of cyclopentane has an important significance in environmental protection and resource utilization. This work is intended to serve as a rapid way to screen mixed solvent for extractive distillation of cyclopentane using the COSMO-RS method. IDACs and VLE data of different binary systems were compared with computational results. Then the performance of mixed solvent was studied by the COSMO-RS method, including the influences of the solvent-to-feed ratio and the basic solvent and cosolvent ratio on the relative volatility. Finally, the mixed solvent was validated to be effective by the experiments.

Kinetic Molecular Sieving of Cyclopentane/Neohexane Mixtures by the MFI Zeolite with Intersecting 10-Ring Channels

“…It is also a high-quality blending component for clean gasoline with high octane number. , The composition of cyclopentane-neohexane from naphtha varies widely in volume from 92/8 to 29/71 . The discrimination of these two compounds is a great challenge because they not only exhibit extremely close boiling points of only 0.4 K difference but also form azeotropic components. , Considering the impossibility of splitting neohexane from cyclopentane by simple distillation operations, azeotropic and extractive distillations ,− have been designed to produce cyclopentane of higher purities. However, these heat-driven distillation-based hydrocarbon separations represent the most energy-intensive and operationally complex processes .…”