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Hydrogenation and regeneration process for waste lubricating oil

A technology for hydrogenation regeneration and waste lubricating oil, which is used in the petroleum industry, lubricating composition, processing hydrocarbon oil, etc., can solve the problems that the total sulfur content cannot be reduced to 10ppm or even below 5ppm, and the depth of catalyst desulfurization and denitrification is limited.

Inactive Publication Date: 2017-02-08
锡山区绿春塑料制品厂
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the above process, in the catalytic hydrogenation unit, the catalyst used in the desulfurization and denitrification depth is limited, and the total sulfur content can only be removed to about 100ppm, and the total sulfur content cannot be reduced to 10ppm or even below 5ppm.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 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.

[0041] 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 by a UGU808 temperature control meter, and the raw material is used for lubrication. The oil is continuously transported by a double-plunger micropump manufactured by Beijing Satellite Manufacturing Plant, the hydrogen is supplied by a high-pressure gas cylinder and the flow rate is controlled by a Beijing Qixing Huachuang D07-11A / ZM gas mass flow meter, and the catalyst loading is 2...

Embodiment 2

[0048] 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.

[0049] All the other conditions are the same as in Example 1.

[0050] The final product was tested and the total sulfur content was reduced to 3 ppm and the total basic nitrogen content was reduced to 7 ppm.

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Abstract

The invention discloses a hydrogenation and regeneration process for waste lubricant base oil. The process uses a pretreatment unit, a hydrogenation and regeneration unit and a separation unit, wherein the hydrogenation and regeneration unit employs a fixed bed reactor which is filled with a hydrogenation catalyst; the hydrogenation catalyst comprises a carrier and an active component; the carrier is a compound or mixture of MSU-G, SBA-15 and HMS; and the active component is a mixture of dimolybdenum nitride (Mo2N), tungsten nitride (W2N), molybdenum carbide (Mo2C) and tungsten carbide (WC). The reaction conditions of the fixed bed reactor are that reaction temperature is 280 to 370 DEG C; reaction pressure is 3 to 8 MPa; a hydrogen-oil volume ratio is 40 to 50; and volume space velocity is 0.5 to 2.5 / h. The process enables the total sulfur content of regenerated lubricating oil to be lower than 5 ppm and the total nitrogen content of the regenerated lubricating oil to be within 10 ppm.

Description

technical field [0001] The invention relates to a waste lubricating oil regeneration process, in particular to a waste lubricating oil hydrogenation regeneration process using a specific catalyst. Background technique [0002] In this highly industrialized era, the wide application of various means of transportation and machinery has led to the wide application of lubricating oil. Lubricating oil can effectively reduce or remove the mutual friction between mechanical parts of vehicles, and it is widely used in the field of reducing sliding friction of mechanical parts, mechanical tools and other spare parts of engines, industrial equipment and factories. After the lubricating oil is used for a period of time, the lubricating oil gradually loses its lubricating function due to the high temperature generated by the work, mechanical shear, oxidation, and foreign matter generated in the use environment, and must be replaced with new lubricating oil. The used lubricating oil wit...

Claims

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Application Information

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IPC IPC(8): C10M175/00B01J29/03C10G45/12
CPCC10M175/0041B01J29/005B01J29/0341B01J2229/18C10G45/12C10G2300/202C10G2400/04C10G2400/10C10M175/0083
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂
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