A kind of preparation method of the polyalpha-olefin synthetic oil of high viscosity index

An olefin synthetic oil, high-viscosity technology, used in chemical instruments and methods, petroleum industry, lubricating compositions, etc., can solve problems such as product performance description, and achieve the effects of improving utilization rate, reducing cost, and simple and convenient process operation.

Active Publication Date: 2019-11-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN103100419A adopts two components of supported organoaluminum compound and proton donor as a catalyst system to carry out the oligomerization reaction of mixed decene, and the conversion rate of mixed decene is greater than 50%, but the performance of the product is not checked. describe
At present, there are few reports on the preparation of PAO with high viscosity index directly by the polymerization of branched α-olefins

Method used

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  • A kind of preparation method of the polyalpha-olefin synthetic oil of high viscosity index

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Effect test

Embodiment 1

[0029] The preparation of embodiment 1 oligomerization catalyst

[0030] 8g silica (pore volume is 0.50cm 3 / g, the average pore diameter is 2.0nm, and the specific surface area is 158m 2 / g) impregnated in vanadium nitrate aqueous solution (vanadium loading capacity is 0.20wt%), continuously stirred and dipped in 25°C water bath for 30min, filtered, and vacuum dried at 100°C for 6h; place the silica carrier impregnated with vanadium nitrate in muffle For roasting in the furnace, the temperature was first raised to 120°C and kept at a constant temperature for 2 hours, then the temperature was raised to 350°C and kept at a constant temperature for 1 hour, then the temperature was further raised to 450°C and kept at a constant temperature for 6 hours, and finally the temperature was naturally lowered and cooled under nitrogen. The obtained sample was immersed again in a toluene solution of aluminum trichloride (the Al loading was 12.00 wt%), continuously stirred and impregnated ...

Embodiment 2

[0031] Embodiment 2 Preparation of oligomerization catalyst

[0032] 8g silica (pore volume is 0.58cm 3 / g, the average pore diameter is 12.5nm, and the specific surface area is 100m 2 / g) impregnated in an aqueous solution of vanadyl oxalate (the loading capacity of vanadium is 0.58wt%), impregnated with continuous stirring in a water bath at 45°C for 50min, filtered, and dried in vacuum at 100°C for 6h; the silica carrier impregnated with vanadyl oxalate was placed on Roasting in the muffle furnace, the temperature was first raised to 120°C, kept at a constant temperature for 2 hours, then raised to 350°C, held at a constant temperature for 1 hour, continued to be heated to 450°C, held at a constant temperature for 6 hours, and finally cooled naturally under nitrogen. The obtained sample was again immersed in an isopropanol solution of titanium tetrachloride (Ti loading was 10.68wt%), impregnated with continuous stirring at room temperature for 2 hours, and vacuum-dried at ...

Embodiment 3

[0033] The preparation of embodiment 3 oligomerization catalyst

[0034] 10g of aluminum oxide (γ-alumina, the pore volume is 1.34cm 3 / g, the average pore diameter is 20nm, and the specific surface area is 220m 2 / g) impregnated in chromium acetate aqueous solution (the chromium loading capacity is 12.00wt%), continuously stirred and impregnated in a water bath at 25°C for 60min, filtered, and vacuum-dried at 100°C for 6h; Roasting in the Fu furnace, first raise the temperature to 120°C, keep the temperature for 2h, then raise the temperature to 350°C, keep the temperature for 1h, continue to raise the temperature to 550°C, keep the temperature for 6h, and finally cool down naturally under nitrogen to 200-300°C, and introduce reducing Gas H 2 , for 1-3h, the contained chromium oxide is reduced to low-priced chromium oxide. The obtained sample was immersed again in an isopropanol solution of titanium tetrachloride (0.10wt% Ti loading), impregnated with continuous stirring a...

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Abstract

The invention relates to a method for preparing poly-alpha-olefin synthetic oil with a high viscosity index. The method comprises the following steps: adding an oligomerization catalyst into raw materials, and carrying out a reaction for 30 to 120 minutes at the temperature of 20 DEG C to 50 DEG C; and separating the catalyst, a reaction product and an unreacted alpha-olefin monomer, and subjecting the reaction product to distillation and hydrogenation, thereby obtaining the poly-alpha-olefin synthetic oil which has the kinematic viscosity of greater than 40cSt and the viscosity index of greater than 150 at the temperature of 100 DEG C. According to the method, PAO with the high viscosity index is polymerized by taking cheap branched-chain alpha-olefin as a synthesis raw material instead of expensive 1-decene. By taking the branched-chain alpha-olefin as the synthesis raw material, byproducts can be utilized so as to increase utilization ratio, and the PAO with the high viscosity index is polymerized by using self-produced decene instead of the expensive 1-decene, so that the cost is reduced, and the economic benefit is increased.

Description

technical field [0001] The invention relates to a preparation method of polyalpha-olefin synthetic oil, in particular to a preparation method of high-viscosity polyalpha-olefin synthetic oil suitable for preparing lubricating oil base oil. Background technique [0002] Polyalphaolefin (PAO) synthetic oil is currently the best synthetic lubricating oil base oil, with high viscosity index, low volatility, low fluidity, good shear performance and excellent high temperature oxidation resistance; and Compared with traditional mineral lubricating oil base oils (I, II, III base oils), PAO has the characteristics of small evaporation loss, good stability, wide temperature range, good compatibility with common materials and non-toxicity. It is not only used in automobiles It is widely used in civilian industries such as aviation, aerospace, and military industries, and it is also the main source of high-grade lubricating oil base oils used in aviation, aerospace, military and other i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M105/04C07C2/10B01J23/22B01J23/26B01J23/86C10N20/02
CPCB01J23/22B01J23/26B01J23/862C07C2/10C07C2523/22C07C2523/24C07C2523/86C10M105/04C10M2203/0206C10N2020/02
Inventor 曹媛媛高立平刘通王斯晗褚洪岭徐显明王力搏王亚丽王秀绘于部伟马克存白玉洁孙恩浩蒋岩赵仲阳闫义斌朱丽娜陈谦韩雪梅黄付玲韩云光林如海
Owner PETROCHINA CO LTD
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