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Modified preformation method for catalyst activation in ethylene reactions
US2017001185A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017001185-A1 |
| Application number | US-201515106994-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 5, 2015 |
| Priority date | Jan 6, 2014 |
| Publication date | Jan 5, 2017 |
| Grant date | — |
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Abstract
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Systems and methods for catalyst activation in ethylene reactions are described. Systems and methods may include pre-mixing at least one ligand and at least one chromium source in at least one solvent to form a pre-mixed composition; activating the pre-mixed composition with an activator to form an activated composition; and supplying the pre-activated composition to a reactor.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for improving catalyst performance in an oligomerization of ethylene, the method comprising: pre-mixing at least one ligand and at least one chromium source in at least one solvent to form a pre-mixed composition; activating the pre-mixed composition with an activator to form an activated composition; and supplying the pre-activated composition to a reactor. 2 . The method of claim 1 , wherein the ligand is ((phenyl) 2 PN(isopropyl)P(phenyl)NH(isopropyl)). 3 . The method of claim 1 , wherein the chromium source is chromium chloride, chromium acetyl acetonate, or a combination comprising at least one of the foregoing. 4 . The method of claim 1 , wherein the solvent comprises toluene. 5 . The method of claim 1 , wherein the solvent is supplied at a concentration between approximately 0.1% and approximately 95%. 6 . The method of claim 1 , wherein the activator is triethylaluminum. 7 . The method of claim 1 , wherein the activating comprises mixing the pre-mixed composition with the activator external to the reactor and stirring. 8 . The method of claim 7 , wherein the mixing time is between approximately 1 minute and approximately 18 hours. 9 . A method for improving catalyst performance in an oligomerization of ethylene, the method comprising: pre-mixing ((phenyl) 2 PN(isopropyl)P(phenyl)NH(isopropyl)) and at least one chromium source in toluene to form a pre-mixed composition; activating the pre-mixed composition with an activator to form an activated composition; and supplying the pre-activated composition to a reactor. 10 . The method of claim 9 , wherein the chromium source is chromium chloride, chromium acetyl acetonate, or a combination comprising at least one of the foregoing. 11 . The method of claim 9 , wherein the toluene is supplied at a concentration between approximately 0.1% and approximately 95%. 12 . The method of claim 9 , wherein the activator is triethylaluminum. 13 . The method of claim 9 , wherein the activating comprises mixing external to the reactor and stirring. 14 . The method of claim 13 , wherein the mixing time is between approximately 1 minute and approximately 18 hours. 15 . A system for improving catalyst performance in an oligomerization of ethylene, the system comprising: a pre-mixing chamber for receiving inputs of one or more ligands, one or more chromium sources, one or more solvents, and one or more activators; one or more stirrers; and a reaction vessel in fluid communication with the pre-mixing chamber for receiving a pre-activated preformation composition. 16 . The system of claim 15 , wherein the one or more ligands and one or more chromium sources are supplied simultaneously. 17 . The system of claim 15 , wherein the ligand is ((phenyl) 2 PN(isopropyl)P(phenyl)NH(isopropyl)). 18 . The system of claim 15 , wherein the chromium source is chromium chloride, chromium acetyl acetonate, and combinations thereof. 19 . The system of claim 15 , wherein the solvent is toluene. 20 . The system of claim 15 , wherein the activator is triethylaluminum.
Assignees
Inventors
Classifications
Chromium · CPC title
- B01J31/143Primary
of aluminium · CPC title
of aluminium or boron · CPC title
containing nitrogen, phosphorus, arsenic or antimony · CPC title
Olefin oligomerisation or telomerisation · CPC title
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- What does patent US2017001185A1 cover?
- Systems and methods for catalyst activation in ethylene reactions are described. Systems and methods may include pre-mixing at least one ligand and at least one chromium source in at least one solvent to form a pre-mixed composition; activating the pre-mixed composition with an activator to form an activated composition; and supplying the pre-activated composition to a reactor.
- Who is the assignee on this patent?
- Saudi Basic Ind Corp
- What technology area does this patent fall under?
- Primary CPC classification B01J31/143. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Jan 05 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).