Neste Oy

Neste Oil Oyj

Neste Alfa Oy

Raimo Linnaila

Fredrik Nissfolk

Kauno Alastalo

Pekka Aalto

Ville Alopaeus

Elina Harlin

Matti Nurminen

Leena Rantanen-Kolehmainen

Vesa-Matti Lehtinen

Vesa-Matti Happonen

Ivo Smeets

Filip Thierie

In the process of the invention, an aliphatic C-Chydrocarbon product is prepared from natural fats or derivatives thereof. The process comprises the steps of: (i) providing a natural fat or derivative thereof, (ii) deoxygenating a natural fat or derivative thereof originating from step (i) to yield an aliphatic C-Chydrocarbon, (iii) hydrocracking an aliphatic C-Chydrocarbon originating from step (ii) to yield a product comprising an aliphatic C-Chydrocarbon, (iv) isomerising an aliphatic C-Chydrocarbon originating from step (iii) into an isomerised aliphatic C-Chydrocarbon, and optionally (v) recovering an isomerised C-Chydrocarbon originating from step (iv) as said C-Chydrocarbon product. Pure and high quality light fuel is easily obtained in sufficient amounts.

Process for the preparation of light fuels

Method for removing catalyst from an oligomer product

The invention relates to a method for removing a boron trifluoride from the exhaust gases of a vacuum pump, which gases have been obtained when polymerizing .alpha.-olefines by using a BF.sub.3 -alcohol complex as a catalyst. In a vacuum distillation, the underpressure is achieved by means of a pump sealed with a fluid ring or by means of fluid jet with a torque or ejector pump, possibly assisted by a mechanical blaster, such as a propellant circulating pump. In this pump, the fluid ring or the fluid jet is formed by a cocatalyst forming a complex with the BF.sub.3 catalyst, which cocatalyst is an alcohol, preferably butanol.

Method for recovering a gaseous boron trifluoride bf.sub.3 and the usage

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Porvoo, Finland

Raimo Linnaila