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Preparation method of high viscosity index poly alpha olefine synthetic oil

An olefin synthesis oil, high viscosity technology, applied in the direction of inter-unsaturated hydrocarbon addition hydrocarbon production, chemical instruments and methods, hydrocarbon purification/separation, etc., can solve the problems such as the preparation and regeneration scheme of the chromium catalyst, and achieve excellent The effect of thermo-oxidative stability, easy process operation and good low temperature performance

Inactive Publication Date: 2007-04-18
PLA AIR FORCE OIL MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In summary, although a variety of methods for preparing synthetic hydrocarbon oils have been disclosed in the prior art, no practical and easy-to-operate preparation and regeneration scheme has been proposed for chromium catalysts.

Method used

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  • Preparation method of high viscosity index poly alpha olefine synthetic oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This example illustrates the preparation of the chromium catalyst employed in the present invention.

[0039] Weigh 9g of chromium acetate aqueous solution Cr(CH 3 COO) 3 (Shanghai Laize Fine Chemical Factory produces, and concentration is 48-53%), it is dissolved in the acetic acid of 100ml 40-50 ℃, then with chromium solution and 100g, particle size is 8-12 purpose silica gel (by Qingdao Ocean Chemical Co., Ltd. Factory production) mixed, stirred at room temperature for 30 minutes, then dried at room temperature and set aside.

[0040] Take the dried silica gel carrier and put it into a tubular reaction furnace. Under the protection of nitrogen, start to heat up. When the furnace temperature rises to 200°C, keep the temperature for 0.5h to remove the solvent. Replace nitrogen with air, continue to raise the furnace temperature to 600°C for 12 hours, then switch the air to nitrogen, under the protection of nitrogen, cool the catalyst to 300°C, pass in reducing gas CO...

Embodiment 2

[0042] This example illustrates the preparation of the chromium catalyst employed in the present invention.

[0043] Weigh 3.5g chromium acetate Cr(CH 3 COO) 3 (produced by Beijing Chemical Plant), dissolve it in 10ml of 40-50°C acetic acid and water mixture (mixing ratio is 3:7, volume ratio), then add 40-50°C acetic acid 70ml, mix chromium solution with 80g , particle size of 8-12 mesh silica gel mixed, stirred at room temperature for 30 minutes, then dried at room temperature, set aside.

[0044] Take the dried silica gel carrier and put it into a tubular reaction furnace. Under the protection of nitrogen, start to heat up. When the furnace temperature rises to 250°C, keep the temperature for 0.5h to remove the solvent. Replace nitrogen with air, continue to raise the furnace temperature to 550°C for 12 hours, then switch the air to nitrogen, under the protection of nitrogen, cool the catalyst to 350°C, pass in reducing gas CO, keep the temperature for 3 hours, and remove...

Embodiment 3-9

[0046] This embodiment illustrates: adopt the method described in the present invention to prepare polyalpha-olefin synthetic oil.

[0047] Add 2kg α-decene raw material (produced by the Czech Republic) in the tank reactor, still temperature is raised to the reaction temperature of setting under continuous stirring, adds the chromium catalyst after the activation, the α-decene raw material and catalyzer The weight ratio is 100:1. Under the protection of nitrogen, react for 10h, release the oligomer, and filter off the catalyst. The resulting reaction product was distilled at 180°C under normal pressure to separate the light components in the product. See Table 1 for the experimental results.

[0048] example

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PUM

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Abstract

The present invention relates to a preparation method of poly-alpha-olefin synthetic oil with high viscosity index. Said method includes the following steps: in a still-type reactor making alpha-decene raw material be contacted with active chrome catalyst, under the condition of 0.1-20 MPa and 100-250 deg.C making reaction for 2-20 h, separating catalyst, reaction product and unreacted alpha-decene, making the described reaction product undergo the process of hydrogenation treatment so as to obtain the invented product poly-alpha-olefin synthetic oil.

Description

technical field [0001] The invention relates to a preparation method of high viscosity index polyalpha-olefin synthetic oil. Background technique [0002] Poly-α-olefin synthetic oil is a kind of oil with excellent performance among all kinds of synthetic oils. Compared with mineral oil of the same viscosity, it has wide liquid range, good viscosity-temperature performance, low pour point, high viscosity index, and easy evaporation. It has the advantages of small loss, good susceptibility to additives, excellent high temperature thermal oxidation stability, less coking, non-toxic and infiltration to the skin. Due to its excellent performance, it has been widely used in the aerospace industry. [0003] Since the 1970s, countries have attached great importance to the research on α-olefin polymerization catalysts. Catalysts for α-olefin polymerization can be divided into four types: free radical type, aluminum chloride type, Ziegler type and Lewis acid complex type. The sele...

Claims

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Application Information

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IPC IPC(8): C07C2/08C07C2/24C07C7/163
Inventor 沈虹滨刘婕王猛赵升红关群薛艳张跃毅朱春婷顾鹏翔
Owner PLA AIR FORCE OIL MATERIAL RES INST
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