Lubricating grease prepared by using waste gear oil and method for preparing lubricating grease

A gear oil and lubricating grease technology, which is applied in the direction of lubricating compositions and the petroleum industry, can solve the problems of difficult waste water and waste residue treatment, high energy consumption of solvent recovery, and large environmental hazards, so as to improve the resource reuse rate and realize Effects of resource regeneration and harm reduction

Active Publication Date: 2015-03-25
LUOHE BEIJIA BILL SCI & TECH CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is aimed at the acid, alkali and white clay treatment process, the waste water and waste residue produced by it are difficult to deal with, and are very harmful to the environment; the solvent refining and regeneration technology has the problems of high energy consumption for solvent recovery and poor thermal stability. , to provide a lubricating grease prepared from waste gear oil and a preparation method thereof, through deep purification of waste gear oil, heating, and catalysis, to convert harmful substances into useful substances, and to produce lubricating grease through an improved lubricating grease production process, to achieve Recycling and reuse of resources, reducing the harm of waste gear oil to the environment, and improving the rate of resource reuse

Method used

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  • Lubricating grease prepared by using waste gear oil and method for preparing lubricating grease

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The method for preparing lubricating grease from waste gear oil in this embodiment is as follows:

[0022] Process (1): Deep purification and transformation of gear oil, the steps are as follows:

[0023] (1) Heat the recovered waste gear oil, control the temperature below 60℃, stir evenly, and use positive electricity to neutralize the negative charge of lubricating oil impurity ions to eliminate electrostatic repulsion and facilitate the sedimentation of impurity particles and the separation of water. Settling time is not less than 4 hours, and the large particles of impurities and moisture are initially removed.

[0024] (2) The gear oil obtained in step (1) is centrifuged for multiple cycles through a high-speed centrifuge to remove medium-sized particles and trace moisture. The number of centrifugal separations depends on the impurities and moisture content of the waste gear oil, at least not less than 4 times;

[0025] (3) The gear oil obtained in step (2) is subjected t...

Embodiment 2

[0040] Process (1): The process steps of deep purification and conversion of gear oil are the same as the process (1) of Example 1;

[0041] Process (2): Preparation of high-performance calcium sulfonate grease from waste gear oil in this example is made of raw materials with the following weight components: 32% of advanced waste gear oil, 44% of calcium sulfonate with high alkali value, Dodecylhydroxystearic acid 5%, transforming agent 7.5%, water 6%, boric acid 2.0%, sulfide isobutylene 0.6%, calcium hydroxide 0.7%, N-phenyl-a naphthylamine 1.3%, random polypropylene 0.9% .

[0042] The preparation process is as follows:

[0043] (1) Add 320Kg of gear oil and 440Kg of calcium sulfonate after deep purification and conversion into the reactor, heat to 80℃, and stir for 30min at constant temperature;

[0044] (2) Add 50Kg of dodecylhydroxystearic acid to the material obtained in step (1), stir at 80°C, wait for it to completely melt, add 75Kg of transforming agent and 60Kg of water, a...

Embodiment 3

[0051] The method for preparing lubricating grease from waste gear oil in this embodiment is as follows:

[0052] Process (1): The process steps of deep purification and conversion of gear oil are the same as the process (1) of Example 1;

[0053] Process (2): Preparation of high-performance calcium sulfonate grease from waste gear oil of this embodiment is made of raw materials with the following weight components: 34.1% of advanced waste gear oil, 40% of calcium sulfonate with high alkali value, Alkylbenzene sulfonic acid 6%, transforming agent 8%, water 6.5%, boric acid 1.0%, triphenyl phosphate and isobutylene sulfide 1.1%, calcium hydroxide 0.6%, diphenylamine and N-phenyl-a naphthylamine 1.6% , Ethylene-propylene copolymer and random polypropylene 1.1%.

[0054] The preparation process is as follows:

[0055] (1) Add 341Kg of converted gear oil and 400Kg of calcium sulfonate to the reaction kettle in process (1) deep purification, heat to 70℃, and stir for 30min at constant tem...

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Abstract

The invention discloses multifunctional lubricating grease prepared by using waste gear oil. The multifunctional lubricating grease is prepared by using the following materials in weight percent: 32-45 percent of deeply-treated waste gear oil, 30-44 percent of overbased calcium sulphonate, 4-8 percent of 12-hydroxystearic acid/ alkyl benzene sulphonate, 6-10 percent of conversion agent, 6-13 percent of water, 0.8-3.2 percent of boric acid, 0.5-1.5 percent of extreme pressure antiwear agent, 0.6-1.5 percent of calcium hydroxide, 0.1-1.6 percent of antioxidant and 0.2-1.2 percent of ethylene-propylene copolymer/random polypropylene. The qualified lubricating grease product is produced according to an improved method for producing the lubricating grease by converting harmful materials into saponifiable materials through heating and catalyzing, so that the regeneration of resources is achieved, the harm of waste gear oil to the environments is reduced, and the reutilization rate of the sources is improved; and the method can be used for solving the problems of high energy consumption, high difficulty in treating waste water and waste residues and severe environment pollution during treatment of waste oil in China.

Description

Technical field [0001] The invention belongs to the technical field of grease preparation, and specifically relates to a grease prepared by using waste gear oil and a preparation method thereof. Background technique [0002] The total demand for lubricants in China in 2011 has reached 6.8 million tons, accounting for 17% of the world's total consumption of 40 million tons, and accounting for 60% of the total 11.3 million tons in Asia. It has surpassed Russia to become the world's second largest consumer of lubricants. With the continuous development of my country's economy, the demand for lubricants is increasing, but there are more and more waste lubricants, and the pressure on the environment is increasing. It is of great significance to recycle waste oil and realize resource regeneration. At present, the most advanced technology abroad is hydrogenation technology to realize the regeneration of waste oil. However, my country's oil sources are scattered, the variety of waste o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M175/00C10N30/06C10N50/10
Inventor 胡纪根赵淑玲李常馥王奇
Owner LUOHE BEIJIA BILL SCI & TECH CHEM
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