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US 9,643,902 B2Granted
Processes utilizing solvent extraction
AssigneeExxonMobil Chemical Patents Inc.
InventorsGeorges M. K. Mathys, Marc P. H. Puttemans, Geraldine Tosin, Eddy T. Van Driessche, Paul Hamilton, Marcel J. G. Janssen
Life of this patent
Estimating the term…
Abstract
Embodiments of an invention disclosed herein relate to processes utilizing solvent extraction to remove nitrogen containing compounds and optionally other components from feedstreams of olefins and paraffins.
Claims25
A process for removing nitriles and/or pyrroles from a feedstream, the process comprising the steps of:
- (a) contacting at least one solvent with one or more adsorbents to remove contaminants of nitrogen and sulfur;
- and
- (b) contacting at least one feedstream comprising olefins, paraffins, and at least one of a nitrile and/or a pyrrole with the at least one solvent produced in step (a) to remove at least a portion of the nitrile and/or the pyrrole from the at least one feedstream to produce at least one treated feedstream which comprises less than 0.1 ppm of nitrogen and a contaminated solvent;
- (c) regenerating the contaminated solvent produced in step (b) by contacting the contaminated solvent with an inert gas to remove at least a portion of the nitrile and/or pyrrole to produce a regenerated solvent;
- and
- (d) recycling at least a portion of the regenerated solvent produced in step (c) to step (a).
3 more elements
A process for the oligomerization of olefins, the process comprising the steps of:
- (a) contacting at least one solvent with one or more adsorbents to remove contaminants of nitrogen and sulfur;
- (b) contacting at least one feedstream comprising olefins, paraffins, and at least one of a nitrile and/or a pyrrole with the at least one solvent produced in step (a) to remove at least a portion of the nitrile and/or the pyrrole from the at least one feedstream to produce at least one treated feedstream which comprises less than 0.1 ppm of nitrogen and a contaminated solvent;
- (c) regenerating the contaminated solvent produced in step (b) by contacting the contaminated solvent with an inert gas to remove at least a portion of the nitrile and/or pyrrole to produce a regenerated solvent;
- (d) recycling at least a portion of the regenerated solvent produced in step (c) to step (a);
- and
- (e) subsequently contacting the at least one treated feedstream with a catalyst under oligomerization conditions to produce oligomers.
3 more elements
Dependencies are inferred from the claim text.