Hollow fiber carbon molecular sieve membrane and preparation and use thereof

摘要

A hollow fiber carbon molecular sieve membrane, a process for preparing the hollow fiber carbon molecular sieve membrane, and a process for effecting separation of an olefin from a gaseous mixture that comprises the olefin in admixture with its corresponding paraffin and optionally one or more gaseous components selected from hydrogen, an olefin other than the olefin and a paraffin other than the corresponding paraffin. The process and membrane may also be used to effect separation of the olefin(s) from remaining feedstream components subsequent to an olefin-paraffin separation.

主权项

1. A process for separating an olefin from a gaseous mixture comprising the olefin admixed with its corresponding paraffin, the process comprising
flowing the gaseous mixture through a hollow fiber carbon molecular sieve, wherein the gaseous mixture is comprised of a first and second olefin, the first olefin having one less carbon than the second olefin, and their corresponding first and second paraffin and the hollow fiber carbon molecular sieve has a second olefin/first paraffin selectivity of at least 2.6 whereby the first and second olefin preferentially pass through the hollow fiber carbon molecular sieve forming a permeate gas and the first and second paraffin are preferentially retained forming a retentate gas, and separating the retentate gas and permeate gas.