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Catalyst carrier for olefin polymerization, preparation method and application thereof

A catalyst carrier and olefin polymerization technology, applied in the polymer field, can solve the problems affecting the continuous progress of the catalyst carrier preparation process for olefin polymerization, nozzle blockage, material blockage, etc., and achieve the effects of avoiding blockage, reducing production costs and high catalytic activity.

Active Publication Date: 2019-01-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, when a sprayer is used to prepare a catalyst carrier for olefin polymerization, the material often causes blockage at the nozzle of the sprayer. Specifically, the material reaction for preparing the catalyst carrier will form a liquid-solid two-phase system, due to the suspension of solids The particle size is large, and it is easy to cause liquid-solid two-phase separation. Therefore, it is easy to cause blockage during pipeline transportation and transportation of this system into the nozzle.
This greatly affects the continuation of the preparation process of catalyst supports for olefin polymerization

Method used

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  • Catalyst carrier for olefin polymerization, preparation method and application thereof
  • Catalyst carrier for olefin polymerization, preparation method and application thereof
  • Catalyst carrier for olefin polymerization, preparation method and application thereof

Examples

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preparation example Construction

[0023] According to a first aspect of the present invention, the present invention provides a method for preparing a catalyst carrier for olefin polymerization, the preparation method comprising:

[0024] 1) reacting the magnesium compound, the first alcohol compound and the oxirane compound optionally in the presence of an inert liquid medium to obtain a solid substance;

[0025] 2) Dissolving the solid substance in the second alcohol compound for emulsification to obtain a fluid mixed substance;

[0026] 3) solidifying the fluid mixed substance by spraying to obtain the catalyst carrier for olefin polymerization; wherein,

[0027] The general formula of the magnesium compound is MgXY, X is halogen, and Y is selected from halogen, or one of the following substituted or unsubstituted groups: C 1 ~C 14 Alkyl, C 1 ~C 14 Alkoxy, C 6 ~C 14 Aryl, C 6 ~C 14 Aryloxy;

[0028] The general formula of the first alcohol compound is R 1 OH,R 1 for C 1 ~C 8 Alkyl or C 3 ~C 8...

Embodiment 1

[0085] This example is used to illustrate the preparation method of the catalyst carrier for olefin polymerization and the prepared catalyst carrier for olefin polymerization of the present invention.

[0086] In a 0.6L reaction kettle, add 0.08mol magnesium chloride and 1.6mol ethanol, heat up to 90°C under stirring, and after constant temperature reaction for 1 hour, add 0.42mol of epichlorohydrin, and press filter after 0.5 hour of reaction. Add 1.5mol ethanol, adopt high-speed agitation (2800rm) to carry out emulsification to form a fluid mixed substance, and use a sprayer containing a nozzle head and a material conduit to spray the fluid mixed substance into the 100°C circulating nitrogen in the sprayer tower body, The temperature of the fluid mixed substance in the material conduit is 15°C, and the temperature in the nozzle head is 120°C. The obtained solidified product was washed 4 times with hexane, and dried in vacuum for 1 h to obtain the catalyst carrier Z1.

[008...

Embodiment 2

[0090] This example is used to illustrate the preparation method of the catalyst carrier for olefin polymerization and the prepared catalyst carrier for olefin polymerization of the present invention.

[0091] In a 0.6L reactor, add 0.08mol magnesium chloride and 1.4mol ethanol, heat up to 90°C under stirring, and after 1.5 hours of constant temperature reaction, add 0.35mol of epichlorohydrin, press filter after 0.5 hours of reaction, and add 1.6mol of ethanol , using high-speed stirring (2800rm) to emulsify to form a fluid mixed substance, and use a sprayer containing a nozzle head and a material conduit to spray the fluid mixed substance into the white oil at 120 °C in the sprayer tower body, the fluidized The mixed mass had a temperature of 15°C in the material conduit and 120°C in the nozzle head. The obtained solidified product was washed 4 times with hexane, and dried in vacuum for 1 h to obtain the catalyst carrier Z2.

[0092] During the preparation of the catalyst c...

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Abstract

Relating to the field of polymers, the invention discloses a catalyst carrier for olefin polymerization, a preparation method and application thereof. The preparation method includes: 1) subjecting amagnesium compound, a first alcohol compound and an ethylene oxide compound to reaction optionally in the presence of an inert liquid medium to obtain a solid substance; 2) dissolving the solid substance in a second alcohol compound for emulsification to obtain a fluid mixture; and 3) solidifying the fluid mixture by spraying to obtain the catalyst carrier for olefin polymerization. The preparation method provided by the invention can avoid the blockage of a spraying machine, facilitates the continuous proceeding of the preparation process, and the prepared catalyst carrier for olefin polymerization has the characteristics of difficult adhesion and good morphology, the catalyst for olefin polymerization prepared from the catalyst carrier has high catalytic activity, and a high bulk densityolefin polymer can be obtained.

Description

technical field [0001] The invention relates to the field of polymers, in particular to a method for preparing a catalyst carrier for olefin polymerization, the catalyst carrier for olefin polymerization prepared by the preparation method, and the application of the catalyst carrier for olefin polymerization in olefin polymerization catalysts. Background technique [0002] It is well known that the Ziegler-Natta catalyst supported by magnesium chloride alcoholate is significantly better than catalysts supported by other supports when it is used for the polymerization of olefins (especially propylene). This catalyst is also currently the most widely used industrial catalyst for olefin polymerization. [0003] In order to obtain a spherical magnesium chloride alcoholate carrier, it can be prepared by spray drying, spray cooling, high-pressure extrusion, high-speed stirring, emulsifier method, and high-gravity rotating bed method. For example, WO1999044009A1 and US4399054 all d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/02C08F110/06C08F4/642C08F4/649
CPCC08F4/022C08F4/6421C08F4/6494C08F4/6498C08F110/06C08F2500/12
Inventor 刘涛凌永泰夏先知刘月祥李威莅陈龙张天一
Owner CHINA PETROLEUM & CHEM CORP
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