Olefin metathesis by reactive distillation
AssigneeChevron Phillips Chemical Company LP
InventorsWei Qi, Enrique Mancillas, Jeffery C Gee, Sean K. McLaughlin, Jared Fern, Steven Bischof, Paul Hobson
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Abstract
Processes and reaction systems for olefin metathesis by reactive distillation, utilizing liquid phase metathesis of reactant olefins in the presence of a homogeneous metathesis catalyst system, where the light metathesis product is produced and leaves the liquid phase as vapor phase and the heavy metathesis product is produced in liquid phase. Separation can be performed on the light metathesis product and a distinct other separation can be performed on the heavy metathesis product.
Claims20
A process for olefin metathesis by reactive distillation, comprising:
- reacting, in a reaction zone of a distillation column, a first reactant olefin in a presence of a homogeneous metathesis catalyst system to form a metathesis product comprising a first product olefin a second product olefin;
- and
- removing a liquid phase comprising the second product olefin and the homogeneous metathesis catalyst system from the reaction zone of the distillation column;
- wherein the reaction zone has a liquid collection tray positioned below a reactive tray in the distillation column,
- wherein the liquid phase is removed from the reaction zone of the distillation column via a side draw stream that is fluidly connected to the liquid collection tray.
A process for olefin metathesis by reactive distillation, comprising:
- reacting, in a reaction zone of a distillation column, a first reactant olefin in a presence of a homogeneous metathesis catalyst system to form a metathesis product comprising a first product olefin a second product olefin;
- removing a liquid phase comprising the second product olefin and the homogeneous metathesis catalyst system from the reaction zone of the distillation column;
- after removing the liquid phase, separating the liquid phase into a first stream comprising the second product olefin and a second stream comprising the homogeneous metathesis catalyst system;
- introducing the first stream into a first product separation zone;
- removing a vapor phase comprising the first product olefin and an unreacted reactant olefin from the reaction zone;
- after removing the vapor phase, introducing the vapor phase into a second product separation zone;
- and
- separating, in the second product separation zone, the vapor phase into a first vapor portion comprising the first product olefin and a first liquid portion comprising the unreacted reactant olefin,
- wherein the reaction zone and the second product separation zone are contained within the distillation column,
- wherein the second product separation zone is above the reaction zone in the distillation column, and wherein the first product separation zone is in a stripping column.
Dependencies are inferred from the claim text.