Abstract: In the process of the invention, an aliphatic C2-C14 hydrocarbon 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 C9-C28 hydrocarbon, (iii) hydrocracking an aliphatic C9-C28 hydrocarbon originating from step (ii) to yield a product comprising an aliphatic C2-C14 hydrocarbon, (iv) isomerising an aliphatic C2-C14 hydrocarbon originating from step (iii) into an isomerised aliphatic C2-C14 hydrocarbon, and optionally (v) recovering an isomerised C2-C14 hydrocarbon originating from step (iv) as said C2-C14 hydrocarbon product. Pure and high quality light fuel is easily obtained in sufficient amounts.

Abstract: In the process of the invention, an aliphatic C2-C14 hydrocarbon 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 C9-C28 hydrocarbon, (iii) hydrocracking an aliphatic C9-C28 hydrocarbon originating from step (ii) to yield a product comprising an aliphatic C2-C14 hydrocarbon, (iv) isomerising an aliphatic C2-C14 hydrocarbon originating from step (iii) into an isomerised aliphatic C2-C14 hydrocarbon, and optionally (v) recovering an isomerised C2-C14 hydrocarbon originating from step (iv) as said C2-C14 hydrocarbon product. Pure and high quality light fuel is easily obtained in sufficient amounts.

Abstract: A method for removing catalyst from an olefinic oligomerization product includes the steps of oligomerizing one or more olefins in the presence of a BF.sub.3 cocatalyst complex, and distilling the oligomerization product while separating vaporized BF.sub.3 cocatalyst complex, the distillation step including, simultaneously to the separation of BF.sub.3 cocatalyst complex, a separation of vaporized unreacted monomer from a bottom product which becomes substantially free from BF.sub.3 cocatalyst complex.

Abstract: 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.