Method of preparing base oil of lubricating oil from raw materials with high wax content

A technology for lubricating base oil and raw material oil, applied in lubricating compositions, petroleum industry, refined hydrocarbon oil, etc., can solve the problem of large loss of catalyst activity, and achieve the effects of reducing cracking activity, improving selectivity, and improving yield

Active Publication Date: 2016-06-08
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • 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 of preparing base oil of lubricating oil from raw materials with a high wax content. The method comprises the following steps: at first, mixing a pretreatment solution with an isomerization de-waxing catalyst and preprocessing the isomerization de-waxing catalyst so as to obtain a preprocessed isomerization de-waxing catalyst; then adding the obtained preprocessed isomerization de-waxing catalyst into a reactor, carrying out hydrogen activation; finally contacting raw material oil and hydrogen gas with the activated isomerization de-waxing catalyst and carrying out isomerization de-waxing reactions in an atmosphere of hydrogen sulfide with a certain concentration. Through inhibiting the cracking activity of the isomerization de-waxing catalyst in the primary stage of reactions after hydrogen activation, the isomerization selectivity of the isomerization de-waxing catalyst can be improved, and thus the yield of base oil of lubricating oil is increased.

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 Applications(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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