Patent ID: 8926737
Filing Date: 2015-01-06
Classification: B01D,C10L

Abstract:
1. A process for purifying a natural gas stream, comprising: providing a mercaptan-comprising natural gas stream to an amine-based separation unit; contacting the mercaptan-comprising natural gas stream with an amine-containing absorption liquid in the amine-based separation unit and separating the mercaptan-comprising natural gas stream into a first natural gas stream enriched in mercaptans and a second stream; providing at least part of the first natural gas stream enriched in mercaptans to a selective catalytic oxidation unit and converting at least part of the mercaptans in the first natural gas stream enriched in mercaptans into elemental sulphur in the selective oxidation unit-by selective catalytic oxidation to obtain a purified natural gas stream depleted in mercaptans.