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Method and apparatus for gas-solid separation, application to polymerization reactions

A technology of gas-solid separation and separation chamber, which is applied in the direction of separation method, device whose axial direction of swirl flow can be reversed, swirl flow device, etc., and can solve problems such as increasing operating costs

Active Publication Date: 2014-09-24
BASSELL POLIOLEFINE ITAL SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nonetheless, the need for a purification system to clean the filters is a disadvantage as it increases operating costs

Method used

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  • Method and apparatus for gas-solid separation, application to polymerization reactions
  • Method and apparatus for gas-solid separation, application to polymerization reactions
  • Method and apparatus for gas-solid separation, application to polymerization reactions

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Embodiment Construction

[0018] exist figure 1 In an embodiment, the slurry polymerization is carried out in a jacketed loop reactor, designated 10. Schematically, catalyst components, co-catalysts, and monomers (such as propylene) are introduced into the loop reactor in the direction indicated by arrow 12 . Including loaded with active MgCl 2 In cases where a Ziegler / Natta catalyst on a solid component is used, the solid component can be fed in as such or, preferably, in prepolymerized form.

[0019] Loop reactor 10 may be the first polymerization reactor of the process, or there may be other polymerization reactors upstream of reactor 10 . For purposes of the present description, reactor 10 may receive from line 12 polymer produced in other reactors, or receive prepolymer and / or polymerization catalyst or catalyst components. exist figure 1 The feed lines for catalyst, monomer, molecular weight regulator and other possible ingredients have been omitted in the simplified diagram of , since they a...

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PUM

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Abstract

The invention relates to a method and a device for gas-solid separation, comprising a separation chamber with a rotating hollow body fixed at the top wall of said separation chamber. The rotating hollow body includes a plurality of spaced vanes that define openings for the passage of gas but repel solids entrained by the gas. The apparatus also includes a cylindrical baffle surrounding the rotating hollow body to further deflect the mixed phase gas-solids flow into the separation chamber, and to facilitate settling of the solid shell. The gas-solid separation method can be used to separate the gas-polymer mixture produced in the polymerization process.

Description

technical field [0001] The present application relates to a method and apparatus for gas-solid separation, in particular to a method and apparatus for separating solid polymer particles from a mixed phase solid-gas stream in a polymerization process for olefins. The present application also relates to a process for the polymerization of olefins comprising a slurry polymerization stage and optionally one or more polymerization stages in the gas phase, wherein these methods and devices for gas-solid separation are used to process a mixed phase solids-gas stream between said slurry polymerization stage and said optional polymerization in gas phase stage. Background technique [0002] Slurry polymerization processes have been known for many years and comprise one or more slurry polymerization reactors in which olefin monomers are polymerized in a liquid medium. These methods include processes to polymerize ethylene in a liquid medium comprising an inert diluent such as isobutan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/00B01D45/14B04C5/15B01J8/18B01J19/24
CPCB01J2219/00006B01J2208/00761B01J8/0055B04C9/00C08F10/00C08F6/005B01J8/18B04C5/13B04C2009/007B01D45/14B01J2219/00094B01J19/2435B01J2208/00274B01J2219/00105C08F2/001B01J8/00B01J19/24B01J19/2405B04C5/15
Inventor R·里纳尔迪L·米基耶林G·彭佐
Owner BASSELL POLIOLEFINE ITAL SRL
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