Patent
Production of middle distillate range hydrocarbons by light olefin upgrading
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TLDR
In this paper, an oligomerization process is provided for upgrading lower olefins to distillate hydrocarbons, especially useful as high quality jet or diesel fuels.Abstract:
An oligomerization process is provided for upgrading lower olefins to distillate hydrocarbons, especially useful as high quality jet or diesel fuels. The olefinic feedstock is reacted over a shape selective acid zeolite, such as ZSM-5, to oligomerize feedstock olefins and further convert recycled hydrocarbons. Reactor effluent is fractionated to recover a light-middle distillate range product stream and to obtain gasoline and heavy hydrocarbon streams for recycle.read more
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References
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Catalytic conversion of olefins to higher hydrocarbons
TL;DR: In this paper, an improved continuous process for converting lower olefinic hydrocarbon feedstock to C5+ liquid hydrocarbons by contacting vapor phase OLEF feedstream with acid zeolite catalyst in the presence of recycled diluent stream rich in C3-C4 hydrocarbon in an enclosed reactor at elevated temperature and pressure is presented.
Patent
Two stage system for catalytic conversion of olefins with distillate and gasoline modes
TL;DR: In this paper, an improved process for converting an olefinic feedstock containing ethene and C 3 + alkenes to produce a heavy hydrocarbon product rich in distillate by contacting the feedstock with an oligomerization catalyst bed, at elevated pressure and temperature conditions in operating mode favorable to formation of heavy distillates by selective conversion of C 3+Alkenes.
Patent
Catalytic conversion system for oligomerizing olefinic feedstock to produce heavier hydrocarbons
TL;DR: In this paper, a continuous catalytic process for oligomerizing lower olefins to heavier hydrocarbons is improved by a technique which comprises cooling catalytically converted effluent, fractionating the effluent to obtain a condensed lower aliphatic recycle stream, a liquid C 3 -C 4 product stream, and a liquid product stream consisting essentially of C 5 + hydrocarbon and a gaseous C 2 -gaseous stream by the sequential fractionation steps.
Patent
Production of lubricant and/or heavy distillate range hydrocarbons by light olefin upgrading
TL;DR: In this paper, an improvement has been found which comprises: heating and separating reactor effluent in a primary phase separation zone to vaporize light and middle distillate hydrocarbon components into a first vapor phase stream and recover a heavy liquid stream from the primary separation zone.
Patent
Olefin fractionation and catalytic conversion system
TL;DR: An improved catalytic process for converting an olefinic feedstock comprising ethylene and C3 + olefins to heavier liquid hydrocarbon product comprising the steps of prefractionation and contact with the liquid stream from the prefractionating step with hydrocarbon conversion oligomerization catalyst in at least one exothermic catalytic reaction zone at elevated temperature and pressure to provide a heavier hydrocarbon effluent stream comprising heavy, intermediate and light hydrocarbons as discussed by the authors.