Co-processing diesel fuel with vegetable oil to generate a...

C - Chemistry – Metallurgy – 10 – G

Patent

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Details

C10G 45/04 (2006.01) C10L 1/16 (2006.01) B01J 21/12 (2006.01) B01J 23/42 (2006.01) B01J 23/882 (2006.01) B01J 25/00 (2006.01)

Patent

CA 2738932

The foregoing describes methods and systems for co-processing vegetable oil and petroleum diesel to yield a hy-brid diesel biofuel composition. As previously stated, in some embodiments the present invention is directed to methods/systems by/with which a mixture of vegetable oil and petroleum diesel is co-processed in two stages: the mixture is first hydrotreated to yield a reduced-sulfur hybrid intermediate, and then the hybrid intermediate is processed in an isomerization unit to yield a low cloud point hybrid diesel product that is partially derived from biomass. A notable benefit of at least some such methods/systems is that interstage removal of H2S and NH3 is not required between the stages of hydrotreating and isomerizing, wherein such bene-fit is afforded by sulfur- and nitrogen-tolerant isomerization catalysts.

La présente invention concerne des méthodes et des systèmes de co-transformation d'huile végétale et de diesel de pétrole pour obtenir une composition de biocarburant diesel hybride. Comme indiqué précédemment, dans certains modes d'application, la présente invention concerne des méthodes ou des systèmes permettant de co-transformer un mélange d'huile végétale et de diesel de pétrole en deux étapes : le mélange est tout d'abord hydrotraité pour obtenir un intermédiaire hybride sulfuré réduit, puis l'intermédiaire hybride est transformé dans une unité d'isomérisation pour obtenir un produit diesel hybride de faible point de trouble partiellement dérivé d'une biomasse. L'un des avantages notables d'au moins certains de ces systèmes ou méthodes est qu'il n'est pas nécessaire d'éliminer H2S et NH3 entre les étapes d'hydrotraitement et d'isomérisation, un tel avantage étant apporté dans cette dernière étape par les catalyseurs d'isomérisation compatibles avec le soufre et l'azote.

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