A high-efficiency polyethylene catalyst active component with strong anti-toxicity and its preparation method and application

A technology of active components and polyethylene, applied in the field of high-efficiency polyethylene catalyst active components and its preparation, can solve the problems of poor control of production process parameters, complicated preparation process, complex catalyst preparation process, etc.

Active Publication Date: 2020-06-12
SHANGHAI LEADER CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of this kind of catalyst has the disadvantages of complex preparation process, direct use of magnesium compound as the catalyst carrier, and poor control of the manufacturing process parameters of the carrier.
[0006] CN100424099C discloses a process of using magnesium alcoholate slurry to react with electron donors, preloading titanium and loading titanium, this process requires preloading titanium and loading titanium, requires solvent washing, and will affect the catalyst during the washing solvent separation process yield, and cause serious environmental pollution
The preparation process of this kind of catalyst is complicated, and the process of pumping liquid and solvent washing and drying will affect the yield of the catalyst, and at the same time, small catalyst fragments will be generated, which will affect the quality of the product

Method used

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  • A high-efficiency polyethylene catalyst active component with strong anti-toxicity and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Add 1000Kg of tetrahydrofuran and 30Kg of titanium trichloride to the reaction kettle and stir for 3.5h, program the temperature to increase the temperature of the stirring kettle to 75°C, stir at high speed (200r / min), observe through the sight glass that all the titanium trichloride is dissolved. Keep the temperature in the reactor at 50-80°C, stir at low speed (100r / min) with agitator, and mix the solution for later use.

[0068] Add 183Kg of magnesium dichloride and 22kg of ethanol to the mother liquor preparation tank of the prepared mixed solution of titanium trichloride and tetrahydrofuran, stir for 0.5h, stir at high speed (200r / min), keep the temperature in the preparation tank at 80°C, and react for 9h.

[0069] After the mother liquor reaction is completed, add 200Kg of fumed silica (with a particle size of 20μm and a surface area of ​​230m) into the mixing and beating tank 2 / g), stir with agitator at low speed (100r / min), program the temperature to about 60℃, use...

Embodiment 2

[0072] Add 500Kg of tetrahydrofuran and 20Kg of titanium trichloride to the reaction kettle and stir for 2.5h, program the temperature to increase the temperature of the stirring kettle to 75°C, stir at high speed (180r / min), observe through the sight glass that all the titanium trichloride is dissolved. Keep the temperature in the reactor at 50-80°C, stir at low speed (90r / min) with agitator, and mix the solution for later use.

[0073] Add 85Kg of magnesium dichloride and 11kg of ethanol to the prepared mother liquor preparation tank of the mixed solution of titanium trichloride and tetrahydrofuran, stir for 1h, stir at high speed (180r / min), keep the temperature in the preparation tank at 80°C, and react with timing for 7h.

[0074] After the mother liquor reaction is completed, 110Kg of fumed silica is added to the mixing and beating tank, the mixer is stirred at low speed (90r / min), the temperature is programmed to about 60℃, and the temperature of the dry silica gel is heated ...

Embodiment 3

[0077] Add 800Kg of tetrahydrofuran and 15Kg of titanium trichloride to the reaction kettle and stir for 3h, program the temperature to increase the temperature of the stirring kettle to 75°C, stir at high speed (160r / min), observe through the sight glass that all the titanium trichloride is dissolved. Keep the temperature in the reactor at 50-80°C, stir at low speed (80r / min) with agitator, and mix the solution for later use.

[0078] Add 150Kg of magnesium dichloride and 29Kg of 1,4-butanediol to the mother liquor preparation tank of the prepared mixed solution of titanium trichloride and tetrahydrofuran, stir for 2h, stir at high speed (160r / min), keep the temperature in the preparation tank at 80℃, and time to react 8h.

[0079] After the mother liquor reaction is completed, add 150Kg of fumed silica into the mixing and beating tank, stir at low speed (80r / min) with agitator, program the temperature to about 60℃, and use 80℃ temperature-regulating water to heat the dry silica g...

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Abstract

The invention relates to a high efficiency polyethylene catalyst active ingredient high in anti-toxic effect, and a preparation method and applications thereof. The high efficiency polyethylene catalyst active ingredient high in anti-toxic effect comprises a complex formed from a titanium compound and a cyclic ether, a magnesium compound, and an internal electron donor. The magnesium compound is a complex, is capable of maintaining existing stability of Tin+, avoiding oxidation or reduction, and ensuring the content of Tin+ as a catalyst activity ingredient. The complex is taken as a dentate, and is capable of improving anti-toxic performance of catalysts such as water resistance and oxygen resistance.

Description

Technical field [0001] The invention belongs to the field of polyethylene catalysts, and in particular relates to a high-efficiency polyethylene catalyst active component with strong anti-toxicity, and a preparation method and application thereof. Background technique [0002] The production process of polyethylene includes slurry polymerization process, gas phase polymerization process and solution polymerization process. The gas phase polyethylene production process has the advantages of simple operation process, easy operation control, can use a variety of catalysts, and can produce high, medium and low full density polyethylene resins according to the performance of the catalysts. Based on the above advantages, the gas phase polyethylene process has developed rapidly, and more than 70% of the newly built devices at home and abroad adopt this process technology. In particular, the successful development of the condensed state and super-condensed state operation technology of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/02C08F110/02C08F4/649C08F4/651
CPCC08F10/02C08F110/02C08F4/6494C08F4/651
Inventor 蔡祥军鲍宁
Owner SHANGHAI LEADER CATALYST
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