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A kind of preparation method of lube oil base oil isomerization dewaxing catalyst

A technology of lubricating base oil and isomerization dewaxing, which is applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve low pour point, high yield and high selectivity

Active Publication Date: 2017-07-28
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technologies can only improve the base oil yield to a certain extent

Method used

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  • A kind of preparation method of lube oil base oil isomerization dewaxing catalyst
  • A kind of preparation method of lube oil base oil isomerization dewaxing catalyst
  • A kind of preparation method of lube oil base oil isomerization dewaxing catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Synthesis of Mg-ZSM-22 molecular sieve

[0027] 1) 25.8g of aluminum sulfate (17.2wt%Al 2 o 3 ), 8.65g of magnesium sulfate (MgO content 16.2wt%) were dissolved in 200g of water; 2) 1400mL of deionized water was added to a 5L autoclave, and 10.8g of NaOH was added to stir; 3) 518g of alkaline silica sol (30wt% SiO 2 ) into the reactor and continue to stir; 4) Add the 1) solution to the reactor and continue to stir; 5) Add 115g of ethylenediamine to the reactor and stir, then raise the temperature to 160°C for crystallization for 96 hours; 6) After washing and filtering , the filter cake was dried at 110°C for 10 h to obtain MgO / Na 2 O / Al 2 o 3 / SiO 2 Mg-ZSM-22 molecular sieve raw powder with a molar ratio of 0.82:0.42:1:55.9.

[0028] (2) Carrier molding

[0029] 1) 41.2g Mg-ZSM-22, 80g SB powder (dry basis 75wt%, Al 2 o 3 content>99%), mixed with 1.2g methyl cellulose; 2) configure 71g 5wt% dilute nitric acid solution; 3) knead 2) and 1) in a kneader for 4...

Embodiment 2

[0037] (1) Synthesis of Mg-ZSM-22 molecular sieve

[0038] 1) 25.8g of aluminum sulfate (17.2wt%Al 2 o 3 ), 12.98g of magnesium sulfate (MgO content 16.2wt%) were dissolved in 200g of water; 2) 1400mL of deionized water was added to a 5L autoclave, and 10.8g of NaOH was added to stir; 3) 518g of alkaline silica sol (30wt% SiO 2 ) into the reactor and continue to stir; 4) Add the 1) solution to the reactor and continue to stir; 5) Add 115g of ethylenediamine to the reactor and stir, then raise the temperature to 160°C for crystallization for 96 hours; 6) After washing and filtering , the filter cake was dried at 110°C for 10 h to obtain MgO / Na 2 O / Al 2 o 3 / SiO 2 Mg-ZSM-22 molecular sieve raw powder with a molar ratio of 1.15:0.39:1:61.

[0039] (2) Carrier molding

[0040] With embodiment 1 step (2).

[0041] (3) Carrier ammonia exchange

[0042] With embodiment 1 step (3)

[0043] (4) Alcohol-amine solution treatment

[0044]Dissolve 0.3g of dodecylamine in 100g of...

Embodiment 3

[0048] (1) Synthesis of Mg-ZSM-22 molecular sieve

[0049] 1) 25.8g of aluminum sulfate (17.2wt%Al 2 o 3 ), 16.23g of magnesium sulfate (MgO content 16.2wt%) were dissolved in 200g of water; 2) 1400mL of deionized water was added to a 5L autoclave, and 10.8g of NaOH was added to stir; 3) 518g of alkaline silica sol (30wt% SiO 2 ) into the reactor and continue to stir; 4) Add the 1) solution to the reactor and continue to stir; 5) Add 115g of ethylenediamine to the reactor and stir, then raise the temperature to 160°C for crystallization for 96 hours; 6) After washing and filtering , the filter cake was dried at 110°C for 10 h to obtain MgO / Na 2 O / Al 2 o 3 / SiO 2 Mg-ZSM-22 molecular sieve raw powder with a molar ratio of 1.52:0.43:1:58.6.

[0050] (2) Carrier molding

[0051] With embodiment 1 step (2).

[0052] (3) Carrier ammonia exchange

[0053] With embodiment 1 step (3)

[0054] (4) Alcohol-amine solution treatment

[0055] Dissolve 0.4g of hexadecylamine in 10...

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Abstract

The invention discloses a method for preparing isomerism dewaxing catalysts for lubricating-oil base oil. The method includes the steps that alkaline-earth metal is added in the molecular sieve synthesis process to prepare alkaline-earth-metal-isomorphous-modified molecular sieves with TON and MTT topological structures; sintering is carried out after extrusion molding is carried out on the molecular sieves and activated aluminum oxide, ammonia exchanging modification is carried out on carriers obtained after sintering, then the carriers are placed into an alcohol-amine solution to be immersed for 5 min to 1 hour at the temperature ranging from the indoor temperature to 70 DEG C, and modified carriers are obtained through drying; finally, the active metal is loaded on the modified carriers with an impregnation method or an ion exchange method, and the catalysts are obtained after drying and sintering. The catalysts prepared with the method are used for isomerism dewaxing of lubricating oil distillate, the low-pouring-point and high-viscosity-index lubricating-oil base oil is produced, and the advantages that the strong-acid and weak-acid ratio of the catalysts is low, the activity and the selectivity of an isomerism dewaxing reaction are high, and the lubricating-oil base oil is low in pouring point and high in yield are achieved.

Description

technical field [0001] The invention relates to a preparation method of an isomerization dewaxing catalyst, in particular to an isomerization dewaxing catalyst for producing lubricating oil base oil and a preparation method thereof. Background technique [0002] Lubricating oil, one of the four major products of the petroleum industry, plays a pivotal role in the development of modern industry. The current main production processes for high-end lubricating oil production include catalytic dewaxing and isomerization dewaxing. Among them, the isomerization dewaxing technology is a newly emerging advanced lubricating oil processing technology in the world. It can process raw materials with high wax content. Higher viscosity index and low pour point lube oil components, rather than cracking them into low boiling point components, thus increasing base oil yield and preserving viscosity index. Isomerization dewaxing technology not only has high product yield, but also can obtain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/74C10G45/64C10G73/02
Inventor 孙国方于海斌李孝国赵甲费亚南高鹏臧甲忠郑修新刘有鹏李佳隋芝宇张永惠
Owner CHINA NAT OFFSHORE OIL CORP
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