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Method for preparing composite lithium-calcium based grease by using waste lithium based lubricating grease as raw materials

A technology of lithium-based grease and calcium-based grease, which can be used in lubricating compositions, petroleum industry, etc., can solve problems such as environmental pollution, and achieve the effects of reducing environmental pollution, high hardness and excellent high temperature resistance.

Active Publication Date: 2019-06-14
重庆化工职业学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common treatment method for flying grease is incineration. However, the incineration process itself will pollute the environment

Method used

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  • Method for preparing composite lithium-calcium based grease by using waste lithium based lubricating grease as raw materials
  • Method for preparing composite lithium-calcium based grease by using waste lithium based lubricating grease as raw materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]The preparation method of composite lithium-calcium grease comprises the following steps:

[0045] A. Use 26# industrial grade white oil (40°C kinematic viscosity of 25mm 2 ·s -1 ) to a cone penetration of 430, adopt high-speed centrifugation, filter to remove mechanical impurities, weigh 400.0g and put it into the reactor, and add 24.0g of 12-hydroxystearic acid and 6.0g of stearic acid to the reactor in turn, under normal pressure After heating to 80°C, add 37.7g of calcium hydroxide aqueous solution with a mass fraction of 20.0%, stir and react at 90°C for 4 hours, then gradually raise the temperature to 160°C, stir for 1.6h, dehydrate until the mass content of water is 0.02%, and cool to 60°C;

[0046] B. Add 2.2g of sulfur-phosphorous primary-secondary alcohol base zinc salt in the reaction kettle, 4.0g of sulfurized isobutylene, 1.0g of benzotriazole, 0.2g of benzotriazole derivative T551, after fully stirring, pass through homogenizer homogenization, Then degas...

Embodiment 2

[0048] The preparation method of composite lithium-calcium grease comprises the following steps:

[0049] A. Use 100# industrial grade white oil (40°C kinematic viscosity of 100mm 2 ·s -1 ) to a cone penetration of 460, adopt high-speed centrifugation, filter to remove mechanical impurities, weigh 400.0g and put it into the reaction kettle, add 32.0g of 12-hydroxystearic acid and 8.0g of stearic acid to the reaction kettle in turn, under normal pressure After heating to 80°C, add 100.0g of calcium hydroxide aqueous solution with a mass fraction of 10.0%, stir and react at 90°C for 4 hours, then gradually raise the temperature to 160°C, stir for 2 hours, dehydrate until the mass content of water is 0.03%, and cool to Below 58°C;

[0050] B. Add 3.0g of sulfur-phosphorous primary-secondary alcohol base zinc salt in the reactor, 8.0g of sulfurized isobutylene, 1.2g of benzotriazole, 0.4g of benzotriazole derivative T551, after fully stirring, pass through homogenizer homogeniza...

Embodiment 3

[0052] The preparation method of composite lithium-calcium grease comprises the following steps:

[0053] A. Use SN150# base oil (40°C kinematic viscosity of 30mm 2 ·s -1 ) to a cone penetration of 430, adopt high-speed centrifugation, filter to remove mechanical impurities, weigh 400.0g and put it into the reaction kettle, add 16.0g of 12-hydroxystearic acid and 4.0g of stearic acid to the reaction kettle in turn, under normal pressure After heating to 80°C, add 16.7g of calcium hydroxide aqueous solution with a mass fraction of 30.0%, stir and react at 90°C for 4 hours, then gradually raise the temperature to 160°C, stir for 2 hours, dehydrate until the mass content of water is 0.02%, and cool to 40°C;

[0054] B. Add 2.5g of sulfur phosphorus primary and secondary alcohol zinc salts in the reactor, 6.0g of sulfurized isobutylene, 1.0g of benzotriazole, 0.3g of benzotriazole derivative T551, after fully stirring, pass through homogenizer homogenization, Then degas, that i...

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Abstract

The invention belongs to the technical field of recovery or processing of carboxylic ester containing waste materials, and particularly relates to a method for preparing composite lithium-calcium based grease by using waste lithium based lubricating grease as raw materials. The method comprises the following steps that A, the recovered waste lithium based lubricating grease is diluted by mineral oil until the penetration degree is 420 to 480; mechanical impurities are removed; then, 12-oxystearic acid and stearic acid are added; heating is performed to 80 DEG C; then, a calcium hydroxide watersolution is added; stirring reaction is performed for 4 to 6h under the condition of 80 DEG C to 100 DEG C; the temperature is raised to 160 DEG C; dehydration is performed until the water mass content is smaller than or equal to 0.05 percent; cooling is performed to be smaller than or equal to 60 DEG C; B, anti-oxidizing preservatives, anti-wear reagents at extreme pressure, benzotriazole and benzotriazole derivatives are added into the mixture obtained in the step A; stirring, homogenating and desaeration are performed to obtain the composite lithium-calcium based grease. The composite lithium-calcium based grease prepared by the method has excellent high temperature resistant performance, excellent compressive performance and excellent water sprinkling loss performance.

Description

technical field [0001] The invention belongs to the technical field of recycling or processing waste materials containing carboxylate, and in particular relates to a method for preparing composite lithium-calcium grease by using waste lithium grease as a raw material. Background technique [0002] Various industries such as industry, agriculture, communication, metallurgy, and textile are inseparable from lubrication. Among them, lubricating grease occupies an extremely important share, which can play a lubricating role that lubricating oil cannot solve. Grease is a solid lubricant produced by thickening soap base or non-soap base thickener with mineral oil (or synthetic oil) and adding various additives such as anti-oxidation, anti-wear, anti-corrosion, and extreme pressure ("domestic The relationship between the current situation of lubricating grease and energy consumption", Warburg Pincus, China Energy, 2009, Vol. 31, No. 1, pp. 43-44, published on April 15, 2009). [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10N50/10C10N30/08C10N30/12C10N30/06
Inventor 蔡国星陈本寿涂晶马昱博
Owner 重庆化工职业学院
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