초록

A process is disclosed for separation of straight chain paraffins from a mixture of paraffinic hydrocarbons by selective adsorption on a molecular sieve followed by desorption of the straight chain paraffins with gaseous hydrogen.

대표청구항 ▼

A process for the separation of straight paraffins from a feed mixture mainly consisting of straight and branched paraffins by selective adsorption of the straight paraffins on a molecular sieve, followed by desorption of the straight paraffins from the molecular sieve with the aid of hydrogen, whic

A process for the separation of straight paraffins from a feed mixture mainly consisting of straight and branched paraffins by selective adsorption of the straight paraffins on a molecular sieve, followed by desorption of the straight paraffins from the molecular sieve with the aid of hydrogen, which comprises consecutively (a) passing the feed downwardly through a molecular sieve bed which contains substantially no straight paraffins and the voids of which bed contain branched paraffins, until a desired quantity of straight paraffins has been adsorbed on the molecular sieve, (b) passing a mixture of straight paraffins and hydrogen downwardly through the molecular sieve bed until substantially all the branched paraffins have been expelled therefrom, (c) passing hydrogen upwardly through the molecular sieve bed until most of the straight paraffins have been desorbed and removed with the gas stream, and (d) passing branched paraffins upwardly through the molecular sieve bed until substantially all the hydrogen has been expelled therefrom.