Invention Grant
US09403740B2 Process for separation and recovery of olefin from mixture of paraffin and olefin 有权
从石蜡和烯烃混合物中分离和回收烯烃的方法

Process for separation and recovery of olefin from mixture of paraffin and olefin
Abstract:
The invention provides a process for separation and recovery of an olefin from a mixture of a paraffin and an olefin, contains a separation membrane containing a porous substrate and a zeolite layer that is formed on a surface and/or in a surface layer of the substrate, the zeolite layer being a hydrophilic zeolite layer that has an Si/Al ratio of 1.3 Si/Al 3.5 and a separation factor α, which is expressed by a value of a water/IPA weight ratio of a permeated component divided by that of a feed component in a pervaporation test at a temperature of from 40 to 75° C. of a water-isopropanol mixture containing from 15 to 30% by weight of water, of 10 a 4,000.
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