Process for the gasolines production

C - Chemistry – Metallurgy – 10 – L

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C10L 1/06 (2006.01) C10G 69/14 (2006.01)

Patent

CA 2261884

The present invention refers to a process for the production of high-octane and low benzene content gasolines according to a cycle where a crude oil is fed into an atmospheric distillation unit from which a fraction is obtained called virgin naphtha sent in turn to a splitting unit that produces a fraction called light tops and a fraction called heavy naphtha wherein said heavy naphtha fraction has a six carbon atoms (C6) hydrocarbons content no greater than 0.5 % volume, and said light tops fraction has a seven plus carbon atoms (C7+) hydrocarbons content no greater than 4 % volume. Said process allows in the refinery to contextually obtain quantitative and qualitative improvements in the gasolines production, with increase of the production yield and of the octane number as well as reduction of the produced benzene quantity.

Procédé de production d'essences à taux d'octane élevé et à faible teneur en benzène, selon un cycle dans lequel on introduit du pétrole brut dans une unité de distillation atmosphérique pour obtenir une fraction appelée naphta de première distillation que l'on envoie à son tour dans une unité de séparation qui produit une fraction légère et une fraction appelée essence lourde, ladite fraction essence lourde ayant une teneur en hydrocarbures à six atomes de carbone (C6) ne dépassant 0,5 % en volume, et ladite fraction légère ayant une teneur en hydrocarbures à sept atomes de carbone et plus (C7+) ne dépassant pas 4 % en volume. Ledit procédé permet à une raffinerie d'obtenir une amélioration quantitative et qualitative de la production d'essence, avec une augmentation du rendement et de l'indice d'octane, ainsi qu'une réduction de la quantité de benzène produite.

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