Methods for scale-up from a pilot plant to a larger production facility
AssigneeExxonMobil Chemical Patents Inc.
InventorsBruce J. Savatsky, Ryan W. Impelman, David F. Sanders
Life of this patent
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Abstract
Methods for scale-up from a pilot plant to a larger production facility of a bimodal polymer product having a density, a melt index and melt index ratio are provided herein.
Claims20
A method for scale-up from a pilot plant to a larger production facility of a bimodal polymer product having a density and a melt index comprising the steps of:
- determining a first set of operating conditions to produce the bimodal polymer product in a first reactor in the pilot plant with a bimodal catalyst system, wherein the bimodal catalyst system comprises a first catalyst component and a second catalyst component in a ratio;
- adjusting the ratio of the first catalyst component to the second catalyst component of the bimodal catalyst system;
- transitioning the first reactor from the bimodal catalyst system to a single catalyst system under the first set of operating conditions to produce a polymer composition;
- scaling-up the production of the bimodal polymer product from the pilot plant to a larger production facility under the first set of operating conditions, wherein the larger production facility has a second reactor utilizing the single catalyst system;
- and
- transitioning the second reactor from the single catalyst system to the bimodal catalyst system to produce the bimodal polymer product.
A method for scale-up from a pilot plant to a larger production facility of a bimodal polymer product having a density and a melt index comprising the steps of:
- producing a bimodal polymer product in a first reactor in a pilot plant with a bimodal catalyst system under a first set of operating conditions, wherein the bimodal catalyst system comprises a first catalyst component and a second catalyst component;
- producing a polymer composition in a second reactor in a larger production facility with a single catalyst system;
- modifying the first set of operating conditions to make the polymer composition in the second reactor wherein a second set of operating conditions are determined;
- transitioning the second reactor from the single catalyst system to the bimodal catalyst system under the second set of operating conditions;
- and
- adjusting the amounts of the first catalyst component and the second catalyst component to produce the bimodal polymer product.
A method for scale-up from a first reactor to a second reactor to produce a bimodal polymer product having a density and a melt index comprising the steps of:
- determining a first set of operating conditions to produce the bimodal polymer product in a first reactor with a bimodal catalyst system, wherein the bimodal catalyst system comprises a first catalyst component and a second catalyst component in a ratio;
- adjusting the ratio of the first catalyst component to the second catalyst component of the bimodal catalyst system;
- transitioning the first reactor from the bimodal catalyst system to a single catalyst system under the first set of operating conditions to produce a polymer composition;
- scaling-up the production of the bimodal polymer product from the first reactor to the second reactor under the first set of operating conditions, wherein the second reactor has a second reactor utilizing the single catalyst system;
- and
- transitioning the second reactor from the single catalyst system to the bimodal catalyst system to produce the bimodal polymer product.
Dependencies are inferred from the claim text.