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A kind of method that Fischer-Tropsch wax produces lubricating oil base oil

A lubricating oil base oil and Fischer-Tropsch wax technology, applied in chemical instruments and methods, processing hydrocarbon oil, petroleum industry, etc., can solve the problems of mesopores without structure and reduce interaction

Active Publication Date: 2022-03-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The seed crystal selected in this invention is a microporous molecular sieve, which is added to the preparation system after silanization, and its hydrophobicity is used to increase its effect on the hydrophobic end of the surfactant micelle, thereby reducing the interaction between the two directing agents. However, the formed mesopores still do not have a regular structure, and whether the addition of seed crystals reduces the amount of templating agent has not been reported.

Method used

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  • A kind of method that Fischer-Tropsch wax produces lubricating oil base oil
  • A kind of method that Fischer-Tropsch wax produces lubricating oil base oil
  • A kind of method that Fischer-Tropsch wax produces lubricating oil base oil

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preparation example Construction

[0063] In the present invention, the mother liquor after crystallization can be prepared according to conventional methods in the art, for example, when the ten-membered ring molecular sieve is ZSM-22 molecular sieve, the preparation method of the mother liquor after crystallization can refer to document O. Muraza et al., Microporous and Mesoporous Materials 206(2015) 136–143. When the ten-membered ring molecular sieve is ZSM-48 molecular sieve, the preparation method of the mother liquor after crystallization can refer to the literature P.Me'riaudeau et al / Journalof Catalysis, 1999 (185), 435-444, or refer to the US patent application US5961951. In one embodiment, the preparation process of the crystallized mother liquor includes: preparing a silicon-containing solution, an aluminum-containing solution, and an alkaline liquid, mixing the above-mentioned liquids to form a gel, and then performing crystallization at a certain temperature.

[0064]In the combined catalyst of th...

preparation example 1

[0083] (1) Preparation of mother liquor after crystallization

[0084] Take 36.3 grams of SiO containing 40% by weight 2 silica sol, 1.77 g of analytically pure Al 2 (SO 4 ) 3 18H 2 O, 3.94 grams of analytically pure KOH and 8.44 grams of hexamethylenediamine are ready for use. Hexamethylenediamine was mixed with silica sol, KOH and Al 2 (SO 4 ) 3 18H 2 O and 89.4 grams of deionized water were mixed, and then the two solutions were mixed, stirred for 1 hour, then transferred to a reaction kettle, and crystallized at 160° C. for 72 hours.

[0085] (2) Preparation of filter cake

[0086] Filter the mother liquor after crystallization prepared in the operation (1), and continue suction filtration for 5 minutes when there is no filtrate on the filter cake, and obtain the filter cake F-1, which has a dry basis content of 11.2 % by weight and a silica / alumina molar ratio of 60.

[0087] (3) Preparation of molecular sieve precursor

[0088] The filter cake F-1 was raised ...

preparation example 2

[0098] (1) Preparation of mother liquor after crystallization

[0099] Get 45 grams of white carbon black, 1.25 grams of analytically pure Al 2 (SO 4 ) 3 18H 2 O, 1.88 grams of analytically pure NaOH and 39.3 grams of hexamethylenediamine are ready for use. Mix hexamethylenediamine with silica and 200 g of deionized water, NaOH and Al 2 (SO 4 ) 3 18H 2 O and 272 grams of deionized water were mixed, and then the two solutions were mixed, stirred for 1 hour, then transferred to a reaction kettle, and crystallized at 160° C. for 72 hours.

[0100] (2) Preparation of filter cake

[0101]Filter the crystallized mother liquor prepared in step (1), count as there is no filtrate on the filter cake, continue suction filtration for 5 minutes, obtain filter cake F-2, and the dry basis content of the filter cake F-2 is 11.2 % by weight and a silica / alumina molar ratio of 60.

[0102] (3) Preparation of molecular sieve precursor

[0103] The filter cake F-2 was raised from room ...

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Abstract

The invention relates to a method for producing lubricating oil base oil from Fischer-Tropsch wax. The method comprises: injecting Fischer-Tropsch wax into a reaction device for hydrogenation, the catalyst loaded in the reaction device contains a combined catalyst, and the combined catalyst includes the first A catalyst and a second catalyst, the first catalyst contains ten-membered ring molecular sieve M1, and the second catalyst contains ten-membered ring molecular sieve M2; wherein, the ten-membered ring molecular sieve M1 and / or the ten-membered ring Molecular sieve M2 has the following characteristics: the silica / alumina molar ratio is 120-300; it contains a mesoporous structure and a closed hysteresis loop appears at the low-temperature nitrogen adsorption-desorption curve P / P0=0.4-0.99, and the closed hysteresis The starting position of the ring is at P / P0 = 0.4-0.7. By adopting the method of the invention to produce lubricating oil base oil with Fischer-Tropsch wax, better pour point depressing effect can be obtained, and the yield of lubricating oil base oil is high, and the viscosity index is high.

Description

technical field [0001] The invention relates to the field of hydroprocessing of Fischer-Tropsch wax, in particular to a method for producing lubricating oil base oil from Fischer-Tropsch wax. Background technique [0002] Molecular sieve material has high acidity and high specific surface area, and is an excellent acidic catalyst. At the same time, molecular sieve materials have strong chemical stability and hydrothermal stability, and are difficult to be destroyed by corrosion and dissolution of reactants. Compared with commonly used homogeneous catalysts, molecular sieve material catalysts can be directly reused without separation, and will not pollute the environment and products. The specific surface area and other pore structure parameters of molecular sieve materials have an important influence on the catalytic performance of molecular sieves. Therefore, the preparation of molecular sieves with special channels is an important research direction in the chemical indust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G49/08B01J29/00
CPCC10G49/08B01J29/00C10G2300/1081C10G2400/10
Inventor 毕云飞夏国富郭庆洲方文秀李洪宝
Owner CHINA PETROLEUM & CHEM CORP
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