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Lubricant base oil hydrorefining process

A technology for lubricating base oil and hydrorefining, applied in hydrotreating process, petroleum industry, lubricating composition, etc., can solve the problems of inability to remove total sulfur content, high price, limited depth of catalyst desulfurization and denitrification, etc.

Inactive Publication Date: 2016-12-07
锡山区绿春塑料制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the above process, Ni-Mo or Ni-W catalysts are used in the desulfurization and denitrification unit, of which Ni is a noble metal, and the price is relatively high. Secondly, the desulfurization and denitrification depth of the above-mentioned catalysts is limited, and the total sulfur content cannot be removed below 10ppm.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The catalyst was prepared by impregnation method, and the carrier was a mixture of MSU-G, SBA-15 and HMS, and the mixing ratio was 1:1.1:0.5. The active component molybdenum nitride MO 2 N, tungsten nitride W 2 N, molybdenum carbide Mo 2 The total content of C and tungsten carbide WC is 10% of the mass of the carrier, and their molar ratio is 1:0.4:0.3:0.8.

[0038] The catalyst is loaded into a fixed bed reactor, the reaction tube of the reactor is made of stainless steel with an inner diameter of 50 mm, the catalyst bed is set to 3 layers, the temperature of the catalyst bed is measured with a UGU808 temperature control meter, and the raw material base oil The double-plunger micropump manufactured by Beijing Satellite Manufacturing Plant is continuously transported. The hydrogen is supplied by a high-pressure cylinder and the flow rate is controlled by a Beijing Qixing Huachuang D07-11A / ZM gas mass flow meter. The catalyst loading is 2kg. The reacted product is coo...

Embodiment 2

[0043] The catalyst is prepared by the impregnation method, and the carrier is a mixture of MSU-G / SBA-15 complex, MSU-G / HMS and SBA-15 / HMS complex, wherein the ratio of MSU-G, SBA-15 and HMS is the same as in the example 1 is the same. The active component molybdenum nitride MO 2 N, tungsten nitride W 2 N, molybdenum carbide Mo 2 The total content of C and tungsten carbide WC is 10% of the mass of the carrier, and the molar ratio is 1:0.6:0.45):1.2.

[0044] All the other conditions are the same as in Example 1.

[0045] The final product was tested and the total sulfur content was reduced to 1 ppm and the total basic nitrogen content was reduced to 8 ppm.

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Abstract

The invention discloses a lubricant base oil hydrorefining process. According to the process, a solvent refining unit, a hydrodesulfurization and denitrification unit and a hydrorefining unit are included. A fixed bed reactor is adopted in the hydrodesulfurization and denitrification unit, the fixed bed reactor is filled with a hydrogenation catalyst, and the catalyst comprises a carrier and an active component. The carrier is a compound or mixture of MSU-G, SBA-15 and HMS. The active component is a mixture of molybdenum nitride (MO2N), tungsten nitride (W2N), molybdenum carbide (Mo2C) and tungsten carbide (WC). According to the reaction conditions of the fixed bed reactor, the reaction temperature ranges from 350 DEG C to 370 DEG C, the reaction pressure ranges from 9 MPa to 11 MPa, the hydrogen-oil volume ratio ranges from 300 to 600, and the volume air speed ranges from 1.0 h<-1> to 2.5 h<-1>. By means of the process, the total sulphur content of lubricant base oil can be controlled to be smaller than 5 ppm, and meanwhile the total nitrogen content in the base oil can be controlled within 10 ppm.

Description

technical field [0001] The invention relates to a lubricating oil base oil treatment process, in particular to a lubricating oil base oil hydrorefining process using a specific catalyst. Background technique [0002] The improvement of the quality of lubricating oil products requires the base oil to have higher viscosity index, smaller evaporation loss, better oxidation stability and low temperature fluidity. For example, in order to produce 5W oils or long-life automatic transmission fluids that meet GF-2 and G-3 standards, it is necessary to use part or all of Class II or Class III base oils that meet API base oil classification standards and refine them with conventional solvents. Type I base oils cannot produce such products with qualified quality. Type II and Type III base oils are produced by hydrogenation process, and their quality indicators are: the mass fraction of saturated hydrocarbons is greater than 90%, and the mass fraction of sulfur is less than 0.03 %; In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/04C10M177/00B01J29/035
CPCC10G67/04B01J29/005B01J29/0341B01J29/0358C10G2300/1062C10G2300/202C10G2300/70C10G2400/10C10M177/00
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂
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