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Device for feeding polyolefin catalyst

A polyolefin catalyst and catalyst technology, applied in the direction of feeding devices, chemical instruments and methods, chemical/physical processes, etc., to achieve the effect of reducing the risk of parking, reducing danger, and reducing consumption

Active Publication Date: 2017-01-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these measures still cannot completely solve the problem of blockage of the catalyst feeding device, and the method of spare catalyst feeding device must still be adopted to ensure the continuous and stable operation of the production device

Method used

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  • Device for feeding polyolefin catalyst
  • Device for feeding polyolefin catalyst

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Experimental program
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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings, which are not intended to limit the scope of the present invention.

[0031] Such as figure 1 As shown, the polyolefin catalyst feeding device includes a three-way pipe fitting 1 , a catalyst feed insert 2 inserted into the three-way pipe 1 for catalyst feed, and a cyclone 4 disposed in the catalyst feed insert 2 . The swirler 4 directs the catalyst into a helical flow.

[0032] The three-way pipe fitting 1 includes a main pipe 11 , a first flange 111 and a second flange 112 respectively arranged at two ends of the main pipe 11 , and a branch pipe 12 vertically connected to the main pipe 11 . The main pipe 11 can be configured as a round pipe. The first flange 111 and the second flange 112 are configured in a ring shape. Both ends of the dry pipe 11 are respectively welded to the first flange 111 and the second flange 112 , and the axes of the first flange 111 and the...

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Abstract

The invention provides a device for feeding a polyolefin catalyst. The device comprises a reactant feeding pipe, a catalyst feeding plug-in pipe which is plugged into the reactant feeding pipe and extends to the downstream of the reactant feeding pipe, and a hydrocyclone arranged in the catalyst feeding plug-in pipe, wherein the hydrocyclone is used for enabling a catalyst passing through the hydrocyclone to flow spirally. Under a condition of no big structural change for the existing catalyst feeding device, the flowing condition in the catalyst feeding device is effectively improved, the stable operation period of the device is prolonged, and the risk of shut down caused by blockage of the catalyst feeding device is reduced.

Description

technical field [0001] The invention relates to a polyolefin catalyst feeding device. Background technique [0002] The continuous polymerization process of polypropylene is the production method of polypropylene commonly used in the world. Different polypropylene processes are mainly manifested in the different reactors used. For example, the Spheripol process homopolymerization reactor of Basell Polyolefin Company is two loop reactors in series, so it is also a loop polypropylene process. Its gas phase reactor adopts the form of dense phase fluidized bed. Basell's Spherizone process homopolymerization reactor is a multi-zone circulation reactor, and its gas phase reactor adopts a dense-phase fluidized bed form. The Unipol process of Dow Chemical Company (DOW) uses a gas-phase fluidized bed, and homopolymerization and copolymerization are carried out in two fluidized beds connected in series. The Borstar PP process of Borealis includes a loop reactor and 2 to 3 gas phase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J4/00C08F10/00C08F10/06C08F2/01
Inventor 杨芝超胡慧杰邹杰王路生
Owner CHINA PETROLEUM & CHEM CORP
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