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A method for producing lubricating oil base oil

A technology for lubricating base oil and products, applied in chemical instruments and methods, processing hydrocarbon oil, petroleum industry, etc., can solve problems such as low yield of lubricating base oil products, reduce production costs, improve acidity and acid strength , the effect of reducing the content

Active Publication Date: 2020-07-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above existing Fischer-Tropsch wax isomerization dewaxing or solvent dewaxing technologies to reduce the pour point are limited by the process selectivity, and the yields of lubricating base oil products are all low.

Method used

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  • A method for producing lubricating oil base oil
  • A method for producing lubricating oil base oil
  • A method for producing lubricating oil base oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of bifunctional catalyst used in the present invention:

[0028] (1) The ZSM-22 molecular sieve prepared according to the method in Example 1 of Chinese patent CN1565969A has an aluminum molar ratio of 95 and a specific surface area of ​​220m 2 / g, pore volume 0.23mL / g.

[0029] (2) Will (NH 4 ) 2 Ce(NO3) 6 (produced by Beijing Chemical Plant, analytically pure), and water to prepare Ce 2 o 3 An aqueous solution with a concentration of 15% by weight, 1500 grams of the molecular sieve obtained in step (1) and 2000 grams of the above-mentioned cerium-containing aqueous solution are fully mixed, dried at a constant temperature of 120 ° C for 8 hours, and roasted at a constant temperature of 460 ° C for 8 hours to obtain Ce 2 o 3 Cerium-containing ZSM-22 with a content of 15% by weight.

[0030](3) Fully mix 1000 grams of cerium-containing molecular sieve obtained in step (2) and 500 grams of SB alumina powder, then add 100 grams of dilute nitr...

Embodiment 2

[0033] The preparation method of described bifunctional catalyst is the same as embodiment 1, and difference is that used rare earth element compound is La(NO 3 ) 3 ·6H 2 O (produced by Beijing Chemical Plant, analytically pure), La in the lanthanum-containing solution used 2 o 3 The content is 2.5 wt%, the hydrogenation component is palladium, and the palladium-containing compound used is palladium nitrate, wherein palladium is calculated as metal, and the solution concentration is 3.2wt%, to obtain bifunctional catalyst 2, its composition and physicochemical properties are shown in Table 3, The reaction conditions and reaction results are shown in Table 6.

Embodiment 3

[0035] Using the cerium-containing ZSM-22 molecular sieve and catalyst preparation method prepared in Example 1, three kinds of bifunctional catalysts 4, 5 and 6 were obtained according to the molecular sieve content of 42%, 60% and 72%, respectively, and their composition and physicochemical properties See Table 4. Catalysts 4, 5 and 6 were graded and packed according to the volume ratio of 40:40:30. The reaction conditions and results are shown in Table 6.

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Abstract

The present invention relates to a method for producing lubricating oil base oil. The invention generates alkylbenzene from Fischer-Tropsch wax as a raw material under the action of a catalyst, thereby achieving the purpose of reducing the pour point of Fischer-Tropsch wax and producing a high viscosity index lubricating oil base oil. The method of the invention not only improves the selectivity of the pour point reduction process, but also improves the yield of lubricating oil base oil produced from Fischer-Tropsch wax.

Description

technical field [0001] The present invention relates to a method for producing lubricating oil base oil. Specifically, Fischer-Tropsch wax is used as raw material to convert hydrocarbons to produce lubricating base oil. Background technique [0002] In order to ensure the low-temperature fluidity of lubricating base oils, it is necessary to reduce the pour point of base oil raw materials. Base oil dewaxing process mainly includes solvent dewaxing, catalytic dewaxing (hydrogen dewaxing) and isomerization dewaxing. Solvent dewaxing is the method of physical separation to separate the wax components with high freezing point from the organic components with low freezing point in the raw material to reduce the pour point of base oil. Catalytic dewaxing (hydrodecondensation) is under the action of ZSM-5 molecular sieve catalyst and hydrogen, lubricating oil fractions undergo shape-selective cracking, and their n-paraffins are cracked into small molecular hydrocarbons to lower th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/04B01J29/74B01J35/10
CPCC10G65/046B01J29/7484B01J2229/18B01J2229/40B01J2229/20C10G2400/10C10G2300/70B01J35/615B01J35/633
Inventor 全辉张志银赵威孙国权林振发李莉
Owner CHINA PETROLEUM & CHEM CORP
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