Process for preparing liquid hydrocarbons
AssigneeShell Oil Company
InventorKarl H. Robschlager
Life of this patent
Estimating the term…
Abstract
The invention relates to a process for preparing liquid hydrocarbons (e.g., middle distillates or gasoline) comprising at least the following steps: (i) catalytically oligomerizing an olefins-containing feed, (ii) separating effluent from step (i) into at least two fractions of which at least one (e.g., a gasoline fraction) has a boiling range above that of the feed olefins, and (iii) recycling at least part of a higher boiling fraction obtained from step (ii) to step (i). Optionally, in a further step (iv), a higher boiling fraction is hydrocracked, e.g., to prepare additional gasoline and/or middle distillates.
Claims6
Process for preparing liquid hydrocarbons which comprises at least the following steps:
- contacting an olefins-containing feed at oligomerization conditions with a solid oligomerization catalyst comprising nickel on a crystalline aluminum silicate carrier having the structure of a mordenite,
- (ii) separating effluent from step (i) into at least two fractions of which at least one has a boiling range above that of the feed olefins,
- (iii) recycling at least part of a higher boiling fraction obtained from step (ii) to step (i), and
- (v) contacting at least part of a fraction from step (ii) having a boiling range above that of the feed olefins with a hydrocracking catalyst under hydrocracking conditions to produce a reaction effluent.
Dependencies are inferred from the claim text.