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About 130 million tons of ethylene and 55million tons of propylene have been produced every year in the world and thus, olefin production process is very important in the chemical process. Cryogenic distillation process has been used for olefin/paraffin separation commercially. but the process has been extremely high energy-consuming; about 20% of the energy of petrochemical industry have been consumed. Facilitated transport membranes (FTMs) could be a promising alternative for olefin/paraffin separation, We have prepared dense and composite FTMs using polymeric ion complex containing AgNO3. Excellent olfein/paraffin selectivity and olefin flux with the FTMs were obtained through pure gas permeation test. A simulation program based on the obtqined results was developed , which could predict the FTMs could provide high-purity olefin at high recovery from olefin/paraffin mixtrue at one-stage process.
