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A kind of lubricating oil base oil raw material esterification deacidification catalyst and application thereof

A lubricating oil base oil, esterification deacidification technology, applied in the direction of physical/chemical process catalysts, refined hydrocarbon oil, petroleum industry, etc., can solve the problems that the catalyst is not environmentally friendly, not applicable, and the deacidification efficiency needs to be improved, so as to reduce the Effects of acid value, rate increase, and reaction time shortening

Active Publication Date: 2016-12-28
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned existing esterification deacidification catalysts are not ideal because they are not applicable at lower temperatures, or because the catalysts are not environmentally friendly, or because the deacidification efficiency needs to be improved.

Method used

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  • A kind of lubricating oil base oil raw material esterification deacidification catalyst and application thereof
  • A kind of lubricating oil base oil raw material esterification deacidification catalyst and application thereof
  • A kind of lubricating oil base oil raw material esterification deacidification catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The present embodiment provides a kind of hydrotalcite, and it is prepared by the following method:

[0042] Al(NO 3 ) 3 9H 2 O and Mg(NO 3 ) 2 ·6H 2 O is prepared into a mixed salt solution whose total concentration of salts is 1.0mol / L, wherein the magnesium / aluminum molar ratio is 4;

[0043] With urea: NO in the mixed salt solution 3 - The molar ratio is 2-4, the mixed salt solution and the aqueous solution of urea are uniformly mixed to obtain the aqueous solution of mixed salt and urea;

[0044] Then the aqueous solution of the mixed salt and urea was stirred (synthesized) for 12 hours under a constant temperature oil bath condition of 100°C, and then crystallized under a constant temperature oil bath condition of 100°C for 12 hours. After suction filtration, the filtered The cake was washed until the pH value was 7, and then the washed filter cake was dried in an oven at 110° C. for 12 hours to obtain the hydrotalcite.

Embodiment 2

[0046] This example provides a lubricating oil base oil raw material esterification deacidification catalyst, the catalyst is a supported hydrotalcite catalyst, which is prepared by the following method (additional aluminum source method):

[0047] Al(NO 3 ) 3 9H 2 O and Mg(NO 3 ) 2 ·6H 2 O is prepared into a mixed salt solution whose total concentration of salts is 0.5-1.5mol / L, wherein the magnesium / aluminum molar ratio is 4;

[0048] With urea (precipitating agent): NO in the mixed salt solution 3 - The molar ratio is 2-4, the mixed salt solution and the aqueous solution of urea are uniformly mixed to obtain the aqueous solution of mixed salt and urea;

[0049] The mass ratio of magnesium salt: activated alumina (carrier) is 0.51-1.28 (the mass of the magnesium salt is expressed as Mg(NO 3 ) 2 ·6H 2 O mass basis), 60-80 mesh unroasted or activated alumina powder calcined at 550°C for 4h was added to the aqueous solution of the mixed salt and urea, and stirred (syn...

Embodiment 3

[0055] This example provides a lubricating oil base oil raw material esterification deacidification catalyst, the catalyst is a supported hydrotalcite catalyst, which is prepared by the following method (in-situ synthesis method):

[0056] Mg(NO 3 ) 2 ·6H 2 O is mixed with the magnesium salt solution that concentration is 0.5-1.5mol / L;

[0057] With urea (precipitant): the NO in the magnesium salt solution 3 - The molar ratio is 2-4, and the magnesium salt solution with the concentration of 0.5-1.5mol / L and the aqueous solution of urea are uniformly mixed to obtain the aqueous solution of magnesium salt and urea;

[0058] The mass ratio of magnesium salt: activated alumina (carrier) is 1.03-1.54 (the mass of the magnesium salt is expressed as Mg(NO 3 ) 2 ·6H 2 O mass basis), 60-80 mesh unroasted or activated alumina powder calcined at 550°C for 4h was added to the aqueous solution of magnesium salt and urea, and stirred (synthesized) under the condition of a constant te...

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Abstract

The invention provides a lubricating oil basic oil raw material esterification deacidification catalyst and application thereof. The catalyst includes one or combination of a plurality of components selected from the group consisting of a loading-type hydrotalcite catalyst, a hydrate hydrotalcite catalyst and a modified loading type hydrotalcite catalyst. The loading type hydrotalcite catalyst is prepared by an external aluminum source method or in situ synthesis method; the hydrate hydrotalcite catalyst is prepared by impregnation method from deionized water, potassium nitrate, potassium chloride, potassium carbonate, potassium hydroxide or potassium acetate solution; the modified loading type hydrotalcite catalyst is prepared from potassium carbonate, potassium hydroxide, or potassium nitrate solution by impregnation method for modification. The invention provides the application of the catalyst to esterification deacidification of the lubricating oil basic oil raw material. The catalyst provided by the invention can effectively reduce the acid value of the lubricating oil basic oil raw material at low temperature and in a short time.

Description

technical field [0001] The invention relates to a lubricating oil base oil raw material esterification deacidification catalyst and application thereof, belonging to the technical field of lubricating oil base oil deacidification. Background technique [0002] With the continuous growth of my country's demand for petroleum products, the dependence on imported crude oil has increased year by year, and the sources of crude oil have also tended to be diversified, and the proportion of high-acid crude oil has increased year by year, resulting in a decline in the quality of crude oil, including lubricating oil. The problem of high acid value of distillate oil including base oil has become increasingly prominent. The presence of acidic components in lubricating base oil will reduce the quality of lubricating base oil, affect its performance, and increase the corrosion of engine parts. Although hydrofining can effectively remove petroleum acid in lubricating base oils and successfu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/10C10G29/22
Inventor 朱建华黎小辉刘青柳武本成
Owner CHINA UNIV OF PETROLEUM (BEIJING)