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A method for producing lubricating oil base oil from high-waxy raw materials

A technology for lubricating base oil and feedstock oil, applied in lubricating composition, petroleum industry, refined hydrocarbon oil, etc., can solve the problem of large loss of catalyst activity, and achieve the effect of reducing cracking activity, high isomeric selectivity, and improving selectivity

Active Publication Date: 2017-10-03
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the pretreatment temperature of oxygen-containing compounds is carried out at 120 ° C to 400 ° C, it is equivalent to a hydrothermal modification of molecular sieves for isomerization dewaxing catalysts. Although the selectivity of isomerization catalysts is improved, due to the acidity of molecular sieves Fundamentally changed, the activity of the catalyst is greatly lost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw materials in Examples 1 to 3 are the three raw materials listed in Table 1, respectively, and the catalyst listed in Table 2 is used as the isomerization dewaxing catalyst. The isomerization dewaxing catalyst is pretreated with sulfide and nitride. In the pretreatment solution, the sulfide used is a mixture of diethanol disulfide (50wt%) and dimethyl disulfide (50wt%). It is 1.0% of the weight of the catalyst; the nitrogen compound used is a mixture of aniline (50wt%) and (50wt%) pyridine, and the dosage is 0.8% of the weight of the catalyst; the organic solvent is catalytic cracking gasoline, and the dosage of the organic solvent is 10% of the weight of the catalyst. The pretreatment is carried out under the atmosphere of air, the pretreatment temperature is 160°C, and the pretreatment time is 5h. The pretreated catalyst was activated at 10.0 MPa, the volume ratio of hydrogen to the catalyst was 800, the activation temperature was 320° C., and the activation ti...

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Abstract

The invention relates to a method for producing lubricating oil base oil through isomerization dewaxing of high-waxy raw materials. The method firstly mixes a pretreatment solution with an isomerization dewaxing catalyst for pretreatment to obtain a pretreated isomerization dewaxing catalyst. Then put the pretreated isomerization dewaxing catalyst into the reactor for hydrogen activation, and finally contact the raw material oil and hydrogen with the activated isomerization dewaxing catalyst, and carry out the isomerization dewaxing reaction under a certain concentration of hydrogen sulfide atmosphere . The method of the invention improves the isomerization selectivity of the isomerization dewaxing catalyst and increases the yield of lubricating oil base oil by suppressing the cracking activity of the isomerization dewaxing catalyst at the initial reaction stage after hydrogen activation.

Description

technical field [0001] The invention relates to a method for producing lubricating oil base oil, in particular to a method for producing lubricating oil base oil by using a pretreated isomerization dewaxing catalyst. Background technique [0002] The increasingly stringent environmental regulations and the rapid development of the machinery industry have put forward higher and higher requirements on the performance of lubricating base oils. At the same time, due to the deterioration of crude oil worldwide, the amount of crude oil suitable for lubricating oil production is gradually decreasing. Therefore, the hydrogenation method to produce lubricating oil technology is developing very rapidly. Hydrogenation process refers to the process of producing lubricating oil base oil by hydrocracking process or combined process of hydrotreating-isomerization dewaxing-hydrofining. Its advantages are large flexibility of raw materials, high yield of base oil and value of by-products h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/60C10M177/00
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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