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Preparation and synthesis method of medical polyvinyl

A synthesis method, polyethylene technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve problems such as unsuitable condensed state, and achieve the effect of saving equipment investment and cost operation, short process and simple process

Inactive Publication Date: 2018-08-28
HEFEI ZHONGKE FUHUA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The standpipe or conical cap type deflector used in the existing fluidized bed reactor is extremely easy to generate a collection at the bottom of the reactor, which is not suitable for operation in the condensed state

Method used

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  • Preparation and synthesis method of medical polyvinyl
  • Preparation and synthesis method of medical polyvinyl
  • Preparation and synthesis method of medical polyvinyl

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0019] In describing the present invention, it is to be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "surrounding" etc. Indicating orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a sp...

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Abstract

The invention discloses a preparation and synthesis method of medical polyvinyl, and belongs to the technical field of ethylene processing. The method includes the following steps that firstly, refined ethylene comonomer is put in a fluidized bed reactor for a polymerization reaction, a catalyst is added, and ethylene is subjected to gas-phase-method condensation polymerization; secondly, materials are subjected to loop transformation through an airflow circulating system, and gas is mixed and scattered particles flow back through a flowing-back and mixing chamber; thirdly, polyolefin resin issubjected to devolatilization process treatment; fourthly, resin prilling is carried out. A polymerization reactor of ethylene is improved, liquid drops on the bottom and the inner wall of the reactor are effectively atomized again, solid particles are suspended again, and free switching between a condensation state and a non-condensation state in a flow director is achieved.

Description

technical field [0001] The invention belongs to the technical field of ethylene processing, in particular to a method for preparing and synthesizing medical polyethylene. Background technique [0002] At present, the gas-phase fluidized bed process is the mainstream process for the production of polyethylene (PE), which has the advantages of simple process, low investment, flexible operation, and wide product range, and plays an important role in the field of polyethylene production. Due to the limitation of the heat removal capacity of the circulating gas in the traditional non-condensing state operation, the space-time yield of the fluidized bed is low. After adopting condensed state operation, because the circulating gas contains condensate, the heat of reaction in the fluidized bed reactor is removed through the sensible heat of fluidized gas temperature rise and the latent heat of evaporation of the condensed liquid, thereby improving the space-time of the fluidized bed...

Claims

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Application Information

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IPC IPC(8): C08F110/02C08F2/34C08F2/01C08F6/28B01J8/24
CPCB01J8/24C08F6/28C08F110/02C08F2/34C08F2/01C08L23/06
Inventor 马义才
Owner HEFEI ZHONGKE FUHUA NEW MATERIAL
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