Catalyst component for olefin polymerization, preparation method thereof, catalyst and application of

A technology for olefin polymerization and catalyst, which is applied in the field of catalyst and its application, catalyst component for olefin polymerization and its preparation, can solve the problems of rising fine powder content and breaking, and achieve the effect of low fine powder content

Active Publication Date: 2019-04-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] CN100408603A discloses a catalyst for ethylene polymerization prepared by a spray drying process. The catalyst has good activity, but in the gas phase polymerization, it will still produce serious fragmentation and cause the fine powder content to rise

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  • Catalyst component for olefin polymerization, preparation method thereof, catalyst and application of

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preparation example Construction

[0042] The second aspect of the present invention provides a kind of preparation method of above-mentioned catalyst component, and this preparation method comprises:

[0043] Step S1, preparation of mother liquor: contact electron donor compound, magnesium halide, titanium-containing compound and organic compound, and react to prepare mother liquor;

[0044] Step S2, carrier blending: adding inorganic oxide carrier fillers for blending during or after step S1 to obtain a slurry suspension;

[0045] Step S3, spray forming: the slurry suspension obtained in step S2 is spray-dried to obtain the catalyst component.

[0046] The blending of inorganic oxide carrier fillers can be added at any time when the mother liquor is prepared; for example, in the electron donor compound, magnesium halide, inorganic oxide carrier fillers, titanium-containing compounds and organic compounds are mixed and reacted to obtain silt The slurry material is then spray-molded, and the resulting slurry i...

Embodiment 1

[0068] (1) Preparation of catalyst components

[0069] Add 845 liters of tetrahydrofuran (THF), 31.5 kg of magnesium chloride, and 7.5 liters of TiCl to a 2-cubic-meter kettle that has been purged with nitrogen and equipped with a pressure-temperature controller and a stirrer. 4 , 6.34 liters 68 # White oil (2 O), under stirring, the temperature was raised to 67° C., and the mother liquor was prepared by constant temperature reaction at this temperature for 3 hours. During this process, it has been kept in a nitrogen atmosphere (2 O);

[0070] Add 54.6 kilograms of silica gel (Cabot Corporation TS-610, particle diameter is 0.1~1 micron) to a 2 cubic meter kettle that is equipped with pressure temperature controller and agitator through nitrogen blowing, and the above-mentioned Add the mother liquor and continue stirring at 67°C to completely disperse the silica gel in the mother liquor to obtain a slurry suspension. During this process, it has been kept in a nitrogen atmosp...

Embodiment 2

[0076] (1) Preparation of catalyst components

[0077] In a 2 cubic meter kettle equipped with a pressure temperature controller and a stirrer, 845 liters of tetrahydrofuran (THF), 45.0 kilograms of magnesium chloride, and 17.7 kilograms of TiCl were successively added under stirring. 3 1 / 3AlCl 3 (reduction of TiCl by aluminum 4 obtained), 6.34 liters of 68 # White oil (2 O), under stirring, the temperature was raised to 67° C., and the mother liquor was prepared by constant temperature reaction at this temperature for 3 hours. During this process, it has been kept in a nitrogen atmosphere (2 O);

[0078] Add 60.9 kilograms of silica gel (Cabot Corporation TS-610, particle diameter is 0.1~1 micron) to a kettle of 2 cubic meters that is equipped with pressure temperature controller and agitator through nitrogen blowing, and the above-mentioned Add the mother liquor and continue stirring at 67°C to completely disperse the silica gel in the mother liquor to obtain a slurry su...

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Abstract

The invention belongs to the field of catalysts, disclosed are a catalyst component for olefin polymerization, a preparation method thereof, a catalyst and application, the catalyst component comprises: (1) a reaction product of magnesium halide, a titanium-containing compound and an electron donor compound, the titanium-containing compound is a product of titanium halide and / or aluminum-reduced titanium halide, the general formula of the product of the aluminum-reduced titanium halide is TiXm.nAlXp, wherein n is greater than 0 and less than or equal to 1, m is greater than 0 and less than orequal to 3, p is greater than 0 and less than or equal to 3, and X is halogen; (2) an inorganic oxide carrier filler; and (3) at least one organic compound, wherein the organic compound is liquid hydrocarbon and / or silicon oil. The catalyst is low in particle content and is used for catalyzing ethylene polymerization; and obtained polyethylene powder has less fine powder content.

Description

technical field [0001] The invention relates to the field of catalysts, more specifically, to a catalyst component for olefin polymerization, a preparation method thereof, a catalyst and applications thereof. Background technique [0002] It is well known that the high-efficiency Ziegler-Natta catalyst for olefin polymerization consists of two parts: the main catalyst and the co-catalyst. The main catalyst is composed of a transition metal compound located in the fourth to eighth main groups of the periodic table, and the cocatalyst is a metal organic compound located in the first to third main groups of the periodic table. Usually, the main catalyst can be divided into two parts: an inert carrier and its supported active component. The main catalyst is generally prepared by reacting titanium halides with magnesium halides with lattice defects or by loading the reactants on an inert carrier. Wherein the magnesium compound is preferably a magnesium halide with a lattice def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F110/02C08F4/649C08F4/642C08F4/02C08F2/34
CPCC08F110/02C08F4/6425C08F4/025C08F4/6494C08F2/34C08F2500/20
Inventor 王如恩周俊领张彤瑄纪卫民崔楠楠李秉毅安京燕
Owner CHINA PETROLEUM & CHEM CORP
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