Patent ID: 7081558
Filing Date: 2006-07-25
Classification: C01B,C10G

Abstract:
1. A process for recovery of hydrogen from an effluent rich in hydrocarbons and that also contains hydrogen and a light olefin fraction, said process comprising: in a stage a), contacting said effluent rich in hydrocarbons with at least one reagent, that can react with said olefins to form a complex or a molecule, to form a substantially olefin-free effluent; a stage c), contacting at least a part of the substantially olefin-free effluent with a composition comprising at least one unsaturated compound in the presence of a catalyst under hydrogenation conditions se-as to hydrogenate at least a portion of said unsaturated compound by at least a portion of the hydrogen present in said substantially olefin-free effluent thereby forming a hydrogen-depleted effluent containing hydrogenated hydrocarbons; and in a stage d), dehydrogenating hydrogenated hydrocarbons present in said hydrogen-depleted effluent from stage c) to recover a stream containing hydrogen.