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Hydrogenation regeneration process for waste lubricating oil

A technology for hydrogenation regeneration and waste lubricating oil, which is applied in the fields of hydrotreating process, petroleum industry, lubricating composition, etc. It can solve the problems of limited depth of catalyst desulfurization and denitrification, and the inability to reduce the total sulfur content to below 10ppm or even 5ppm.

Inactive Publication Date: 2016-12-14
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

[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

[0041] The catalyst was prepared by impregnation method, and the carrier was doped Co 2+ MCM-41, Co. 2+ The doping amount in MCM-41 is controlled at 0.65% of the mass of the carrier. 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.

[0042] 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 ...

Embodiment 2

[0049] The catalyst was prepared by impregnation method, and the carrier was doped Co 2+ MCM-41, Co. 2+ The doping amount in MCM-41 is controlled at 0.7% of the carrier mass. 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.

[0050] All the other conditions are the same as in Example 1.

[0051] The final product was tested and the total sulfur content was reduced to 3 ppm and the total basic nitrogen content was reduced to 9 ppm.

Embodiment 3

[0076] The catalyst contains catalyst promoter TiO 2 , CeO 2 , V 2 o 5 and NbOPO 4 , its content is respectively 1%, 1.5%, 1% and 3%, all the other are identical with embodiment 1.

[0077] The final product was tested, and after 3 months of use, the pressure drop of the catalyst bed did not change, which was 16% lower than the pressure drop of the catalyst bed in Example 1 for the same use time.

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PUM

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Abstract

The invention discloses a hydrogenation regeneration process for waste lubricating oil base oil. A pretreatment unit, a hydrogenation regeneration unit and a separation unit are involved in the process. A fixed bed reactor is adopted for the hydrogenation regeneration unit, and the fixed bed reactor is filled with a hydrogenation catalyst. The catalyst is prepared from a carrier and an active component, wherein the carrier is MCM-41 with the synthesis skeleton structure doped with the heteroatom Co2+, and the active component is a mixture of MO2N, W2N, Mo2C and WC. The catalyst is further prepared from a catalytic auxiliary, wherein the catalytic auxiliary is a mixture of TiO2, CeO2, V2O5 and NbOPO4. According to reaction conditions of the fixed bed reactor, the reaction temperature is 280-370 DEG C, the reaction pressure is 3-8 MPa, the hydrogen-oil volume ratio is 40-50, and the volume space velocity is 0.5-2.5 h-1. By means of the process, the total sulfur content of regenerated lubricating oil can be controlled to be lower than 5 ppm, and meanwhile the total nitrogen content of the regenerated lubricating oil can be controlled 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): C10G45/08C10G67/02C10G67/14B01J29/04C10M175/00
CPCC10G45/08B01J29/045B01J2229/183C10G67/02C10G67/14C10G2300/1007C10G2300/202C10G2300/206C10G2400/02C10G2400/04C10G2400/10C10M175/00C10M175/0041
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂