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- W1999366209 abstract "This paper compares separation efficiency and operational stability in the distillation process of two pairs of light hydrocarbon mixtures (iso-/n-butane and propylene/propane) using a distillation column made of micro-porous hollow fibers. The hollow fibers used in the column are non-selective and wetable by the process fluid. In the column with a 36.5 cm length, more than 25% enrichment of iso-butane is obtained from a iso-/n-butane (55/45%) mixture while ∼8% enrichment of propylene is obtained from a propylene/propane (65/35%) mixture. Because of a slightly larger relative volatility of iso-/n-butane than that of propane/propylene, a wider and a more stable operational range is obtained for the former pair. The pressure drop of the hollow fiber packings on both vapor and liquid sides is also discussed. Within the loading range (F-factor < 2.0 Pa0.5), a pressure drop of less than 10 mbar/m is obtained in vapor phase for these two pairs of mixtures. Mass transfer coefficients of >0.15 and 0.04 cm/s are obtained for iso-/n-butane and propylene/propane, respectively, even though the membrane layer contributes an additional mass transfer resistance to the overall mass transfer process. Furthermore, without effectively separating individual fibers, a high packing density may result in a severe channeling problem and thus decrease the separation efficiency." @default.
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- W1999366209 date "2010-10-01" @default.
- W1999366209 modified "2023-09-26" @default.
- W1999366209 title "Light hydrocarbon distillation using hollow fibers as structured packings" @default.
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- W1999366209 doi "https://doi.org/10.1016/j.memsci.2010.06.019" @default.
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