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AssigneeInstitut Francais du Petrole
InventorsDominique Commereuc, Alain Forestiere, François Hughes, Hélène Olivier-Bourbigou
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A process for oligomerising olefins in an organic feed containing at least one olefin comprises two steps with different types of catalysis. The cut to be treated containing at least one olefin (Cn) is introduced via line 1 into a reaction zone R1 where in a first step it undergoes catalytic oligomerisation, either of a liquid phase homogeneous type, or heterogeneous with a solid support. The effluent produced is sent via line 2 to a heat exchanger E1 traversed by a cold liquid. The effluent is thus cooled before being sent via line 3 to a second reaction zone R2 where it undergoes catalytic oligomerisation in a liquid-liquid two-phase medium. After reaction, the effluent is fed via line 4 to a zone L1 where it is washed. After washing, the hydrocarbon fraction is sent via line 5 to separator S1. The fraction containing the unreacted olefins (Cn) is separated from the oligomer product fraction produced, this fraction Cn is evacuated from the apparatus via line 6, and the fraction containing the oligomer products is evacuated via line 7.
A process for oligomerizing an organic feed containing at least one olefin, comprising subjecting said feed to at least two successive oligomerizations with different catalysts, at least one oligomerization being conducted with a homogeneous catalyst in a liquid-liquid two-phase medium containing an ionic liquid, with the proviso that the homogeneous catalyst does not contain a phosphine.
A process for oligomerizing an organic feed containing at least one olefin, comprising subjecting said feed to at least two successive oligomerizations with different catalysts, at least one oligomerization being conducted with a homogeneous catalyst in a liquid-liquid two-phase medium containing an ionic liquid,
Dependencies are inferred from the claim text.