Method for producing fully synthetic lubricating oil from grease

A lubricating oil base oil and grease technology, which is applied in the direction of hydrocarbon oil treatment products, preparation of liquid hydrocarbon mixture, and treatment of hydrocarbon oil, can solve the problems of pour point and high temperature oxidation stability gap, low production cost, etc., and improve production Operational safety, low cost, and production cost reduction effects

Inactive Publication Date: 2019-09-17
EAST CHINA NORMAL UNIV
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  • Claims
  • Application Information

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Problems solved by technology

The production cost of this process is low, and it is suitable for the production of enterprises of different scales. However, due to the presence of oxygen-containing groups in ester lubricating oils, there is still a large gap between its pour point and high-temperature oxidation stability compared with hydrocarbon lubricating oils

Method used

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  • Method for producing fully synthetic lubricating oil from grease

Examples

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Effect test

Embodiment 1

[0021] 1.1 Direct deoxygenation of fatty acids into long chain olefins

[0022] The deoxygenation catalyst is prepared by the impregnation method: the Pt precursor PtCl is mixed with the Pt:Sn ratio of 5:1 4 And Sn precursor SnCl 4 Dissolve. SiO 2 The powder is added to the metal mixed solution, the total amount of metal accounts for SiO 2 5% of the quality. The mixture was stirred to dryness, dried at 80°C overnight, and then ground into powder. The powder was calcined in air at 350°C, and then reduced with hydrogen at the same temperature to obtain a deoxygenation catalyst.

[0023] In this example, octadecanoic acid was used as a raw material. Add 1g of deoxygenation catalyst into the reaction kettle, add 10g of octadecanoic acid, and then add 80ml of dodecane as solvent. After sealing the reactor, first use N 2 Replace the air in the reactor and fill it with 1MPa N 2 . The reaction kettle was heated to 320°C and reacted for 10 hours.

[0024] After the reaction is completed,...

Embodiment 2

[0031] 2.1 Direct deoxygenation of grease to long-chain olefins

[0032] The deoxygenation catalyst is prepared by the impregnation method: Pd is the precursor of PdCl in the ratio of Pd:Sn 1:1 2 And Sn precursor SnCl 4 Dissolve. SiO 2 The powder is added to the metal mixed solution, the total amount of metal accounts for SiO 2 2% of the quality. The mixture was stirred to dryness, dried at 80°C overnight, and then ground into powder. The powder was calcined in air at 350°C, and then reduced with hydrogen at the same temperature to obtain a deoxygenation catalyst.

[0033] In this embodiment, palm oil is used as a raw material. Put 5g of deoxygenation catalyst into the reactor, add 20g of palm oil, and then add 80ml of dodecane as solvent. After sealing the reactor, first use N 2 Replace the air in the reactor and fill it with 1MPa N 2 . The reactor was heated to 350°C and reacted for 24 hours.

[0034] After the reaction is over, after the kettle body is cooled to room temperat...

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Abstract

The invention provides a method for producing fully synthetic lubricating oil by using grease as a raw material and by means of three steps of reactions. The method comprises the following steps: 1, deoxidizing the grease under the hydrogen-free condition until long-chain alkenes are obtained; 2, carrying out polymerization on the long-chain alkenes to obtain polyolefin; 3, carrying out hydrogenation on the polyolefin to obtain base oil of the fully synthetic lubricating oil; adding additives and the like into the base oil to prepare the high performance fully synthetic lubricating oil. The method provided by the invention is simple in process; the selected raw material grease comprises non-edible oil or waste catering oil, so that the raw material source is wide, the use of raw materials from fossil energy sources is avoided, and environmental pollution is reduced while the cost is lowered. The product is comb-shaped regular saturated hydrocarbon molecules containing no oxygen, has excellent properties comparable to those of polyamine oxidase (PAO), and is suitable for being used in various harsh conditions.

Description

Technical field [0001] The invention relates to the technical field of fully synthetic lubricating oil, in particular to a method for producing fully synthetic lubricating oil from grease. Background technique [0002] With the rapid development of China's transportation industry, aerospace industry, energy industry and military industry, people's demand for lubricants is increasing, and the requirements for lubricant quality are also getting higher and higher. Traditional lubricating oil base oil obtained from mineral oil through hydrogenation process has been unable to meet the manufacturing industry's demand for high-quality lubricating oil. Compared with mineral oil, synthetic lubricant base oil has significant advantages in pour point, viscosity index, thermal oxidation stability and evaporation loss rate. [0003] Synthetic lubricant base oils are mainly poly-α-olefins (such as PAO). Among them, PAO has the characteristics of high viscosity index, low pour point, high flash...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/12C10G3/00
CPCC10G3/44C10G3/60C10G69/126C10G2400/10Y02P30/20
Inventor 赵晨李愽龙陈爽
Owner EAST CHINA NORMAL UNIV
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