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Catalyst feed systems and methods for using the same

A feed system and catalyst technology, applied in chemical instruments and methods, thin material processing, chemical/physical processes, etc., can solve the problems of increased cost, inapplicability, skinning and scaling of the catalyst system manufacturing process.

Active Publication Date: 2010-12-08
UNIVATION TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Some of the above-discussed techniques for improving catalyst system poor flow can affect catalyst system productivity, catalyst system activity, may not be applicable to a particular catalyst system type, may add significant cost to the catalyst system manufacturing process, and may result in additional Problems such as skinning and fouling during the polymerization process

Method used

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  • Catalyst feed systems and methods for using the same
  • Catalyst feed systems and methods for using the same
  • Catalyst feed systems and methods for using the same

Examples

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Embodiment 1

[0103] Metallocene Catalyst, XCAT TM HP-100 metallocene catalyst was supplied commercially by Univation Technologies, LLC, Houston, TX. This catalyst system can benefit from improved fluidity under certain operating conditions, for example, when used in tropical climates. The catalyst cylinders were stored in refrigerated containers at 15°C. The catalyst feed system of this specification is installed so as to maintain the catalyst feed vessel temperature below 27°C.

[0104] A thin aluminum shroud is fitted around the catalyst feed vessel. Compressed air at a pressure of 7 barg was used as the heat exchange medium and was directed from the existing piping network near the catalyst feed vessel. The gas supply was divided into three feed lines and each was connected to an Exair CABINET COOLER™ 4840. Cool air exhausted from each Exair CABINET COOLERTM was conveyed with a plastic hose to exhaust into the annulus between the catalyst feed container and the aluminum cover. The ...

Embodiment 2

[0108] Metallocene Catalyst, XCAT TM EZ-100 metallocene catalyst, commercially supplied by Univation Technologies, LLC. This catalyst system can benefit from improved fluidity under certain operating conditions, for example, when used in tropical climates.

[0109] The catalyst cylinder was stored in a refrigerated container at 10°C. The catalyst feed system of the present specification is installed so as to maintain the catalyst feed vessel and catalyst feed vessel vessel temperature below 27°C.

[0110] Refrigerated glycol / water from the existing effluent recovery system was used to provide the cooling medium. A 1" line was installed from the glycol / water line of the existing effluent recovery system up to this catalyst feed level. Wilden Model PRO-FLO P-200ADVANCED TM Metal pump assembly WIL-FLEX TM Diaphragms are well mounted at the catalyst feed level to ensure adequate flow. The pump discharge of the cooling medium is directed to the bottom of the catalyst feed. Th...

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Abstract

Catalyst feed systems and processes utilizing such systems are described herein. Some embodiments disclosed herein relate to a process for improving the flowability of catalyst in a catalyst feed system, including providing a catalyst feed vessel with at least one heat exchange system for maintaining the catalyst system temperature below a critical flow temperature. Also disclosed is a catalyst feed system for the polymerization of olefins including a catalyst feed vessel; and a heat exchange system for maintaining a temperature of a catalyst within the catalyst feed vessel. Additionally disclosed is a process for polymerization of olefins including maintaining a supported catalyst in a catalyst feed vessel below a critical flow temperature of the catalyst; feeding the catalyst to a polymerization reactor; and contacting the catalyst with an olefin to form a polyolefin.

Description

[0001] Cross-references to related applications [0002] This application claims the benefit of Application Serial No. 61 / 010,238, filed January 7, 2008, the disclosure of which is incorporated by reference. technical field [0003] Embodiments disclosed herein relate generally to catalyst feed systems. Embodiments disclosed herein relate, inter alia, to catalyst feed systems for polymerization processes. Embodiments disclosed herein relate, inter alia, to improving the flowability of catalyst systems in catalyst feed systems and catalyst storage vessels for olefin polymerization processes. Background technique [0004] Advances in polymerization and catalysis have yielded the ability to prepare new polymers with improved physical and chemical properties. It has been demonstrated that these new polymers can be used to make a variety of excellent articles with novel applications. Along with the development of new catalysts, the various types of polymerization reactions (so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/00C08F2/00
CPCB01J8/003C08F10/00B01J2208/00752B01J2208/00318B01J2208/0053Y10T137/0324
Inventor W·A·马特修斯M·I·赫德尔G·科罗纳D·P·乐S·格塞克G·W·施沃茨
Owner UNIVATION TECH LLC
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