Fortum Oil & Gas Oy

Antti Pyh&auml;lahti

Juhani Aittamaa

Petri Lindqvist

Juha Jakkula

Outi Krause

Matti Koskinen

Jyrki Ignatius

Mauri Sourander

Juha Linnekoski

A process for dimerizing light olefinic hydrocarbons in a reaction zone containing a solid acidic catalyst. The process comprises recovering a reaction zone effluent which contains unreacted olefinic hydrocarbons, converting the unreacted olefinic hydrocarbons into an intermediate product in the effluent and separating the intermediate product from the effluent. By decomposing the separated intermediate product the unreacted olefinic hydrocarbons can be recovered and recycled to the reaction zone. By means of the invention, the yield of the product and the lifetime of the catalyst can be improved in a direct dimerization process of light olefins.

Process for dimerizing light olefins to produce a fuel component

The invention relates to process for dimerizing olefinic hydrocarbon feedstock, to hydrocarbon compositions and to fuel components produced by the process. According to the invention, fresh olefinic hydrocarbon feedstock is fed to a reaction zone of a system including at least one reaction zone and at least one distillation zone. The olefinic hydrocarbon feedstock is contacted with an acidic catalyst in the presence of an oxygenate at conditions in which at least a part of the olefins dimerizes. The effluent from the reaction zone is conducted to the distillation zone where dimerized reaction product is separated from effluent, and at least one flow comprising oxygenate is withdrawn from the side of at least one distillation column. The flow is circulated from distillation zone back to dimerization. The reaction mixture is recovered and optionally hydrogenated to form a parafinic reaction product.

Process for producing a fuel component

Growing community of inventors

Helsinki, Finland

Antti Pyhälahti

Growing community of inventors

Helsinki, Finland

Antti Pyh&auml;lahti

Antti Pyhälahti