Method for preparing lithium-based (lithium-based calcium-based) lubricating grease by using waste vegetable oil and application

A lithium-based calcium-based grease, lithium-based calcium-based grease technology, applied in lubricating compositions, petroleum industry, thickeners, etc., to achieve a good extreme pressure effect

Inactive Publication Date: 2015-04-08
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In order to solve the problem that waste vegetable oil has not been used to prepare lubricating grease in the prior

Method used

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  • Method for preparing lithium-based (lithium-based calcium-based) lubricating grease by using waste vegetable oil and application

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1: Take 297.9g of waste vegetable oil, remove solid residue and impurities by suction filtration, add 2.38g of phosphoric acid to degumming at 60°C, stir and let stand for 8h, filter, add 30.0g of water to the filtrate and stir for 1.5h, then Centrifuge the oil and water sample (rotation speed is 4000r / min), take the upper oil sample and heat it at 100~110℃ for 1.0h to remove all the water in the oil and obtain a light orange milky clear liquid. Add 23.59g of 10.5% NaOH solution to the supernatant to neutralize unreacted H 3 PO 4 , Then add 16.07g of 10% NaCl aqueous solution, let stand for 7h, filter, add 27.0g of distilled water to the clear liquid under stirring, and obtain a bright orange supernatant after centrifugal dehydration. The clear liquid was heated at 110°C to remove water for 1.0h, and an appropriate amount of activated carbon was added to maintain the decolorization at 104-110°C for 30min, and then cooled to 70-80°C to remove the activated carbon w...

Example Embodiment

[0022] Example 2: Take 159.7g of waste vegetable oil, remove solid residue and impurities by suction filtration, add 1.30g of phosphoric acid to degumming at 60℃, stir well, let stand for 8h and then filter, add 16.0g of water to the filtrate and stir for 2.0h , And then separate the oil and water samples on a centrifuge with a rotation speed of 4000r / min. Take the upper oil sample and heat it at 100~110℃ for 1.0h to remove all the water in the oil to obtain a light orange milky clear liquid. Add 12.89g of 10.5% NaOH solution to the supernatant to neutralize unreacted H 3 PO 4 , Then add 86.94g of 10% NaCl aqueous solution and let stand for 6h. Filter, add 15.00g of distilled water to the clear liquid under stirring, and obtain a bright orange supernatant after centrifugal dehydration. The supernatant was heated at 110°C to remove water for 1.0h, and an appropriate amount of activated carbon was added to maintain the decolorization at 104-110°C for 30min, and then cooled to 70-...

Example Embodiment

[0024] Example 3: Take 271.6g of waste vegetable oil, remove solid residue and impurities by suction filtration, add 2.17g phosphoric acid to degumming at 65℃, stir well, let stand for 8h and then filter, add 27.20g of water to the filtrate and stir for 1.5h , And then separate the oil and water samples on a centrifuge with a rotation speed of 4000r / min, and take the upper oil sample and heat it at 100-110°C for 1.0h to remove all the water in the oil to obtain a light orange milky clear liquid. Add 21.71g of 10.5% NaOH solution to the supernatant to neutralize unreacted H 3 PO 4 , Then add 14.87g of 10% NaCl aqueous solution, and let stand for 8h. Filter, add 27.16g of distilled water to the clear solution under stirring, and obtain a bright orange supernatant after centrifugal dehydration. The supernatant was heated at 110°C for 1.0h to remove water, and an appropriate amount of activated carbon was added to maintain the decolorization at 104-110°C for 30min, and then cooled ...

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Abstract

A method for preparing a lithium-based, calcium-based lubricating grease by using waste vegetable oil, and belongs to the technical field of chemical processing of waste vegetable oil. The method comprises the following steps: 1) the waste vegetable oil is subjected to pickling, alkali washing, water washing, decoloration and a series of crafts to obtain pure refined waste oil; and 2) 12-hydroxystearic acid and a prepared hydrated LiOH or LiOH-CaO-H2O emulsion with a certain proportion are added to the refined waste oil prepared in the step 1, and after a saponification reaction, the lithium-based grease or the lithium-based calcium-based lubricating grease is prepared. The method utilizes useful components of the waste vegetable oil to the greatest extent, the prepared lubricating grease obtains good tribological property technical indexes, the production cost of the lubricating grease is saved, the dual effects of waste pollution treatment and waste comprehensive utilization are achieved, and the preparation method is simple in process and is easily put into actual production.

Description

[0001] The invention relates to a method for preparing lubricating grease from waste vegetable oil, which can be used as a lubricating additive or as a base fat of lubricating grease, and belongs to the technical field of oil chemical industry. Background technique [0002] Waste vegetable oil refers to a series of vegetable oil wastes that lose edible value produced by humans in the process of eating natural vegetable oil and its deep processing, commonly known as gutter oil, swill oil, swill oil, etc. According to calculations, the amount of these waste edible oils accounts for 20% to 30% of the total edible oil consumption. my country's consumption of vegetable oil in 2013 was 2.9×10 7 t, 4~8×10 waste oil is produced every year 7 t, and the amount of waste oil that can be collected as resources is 4.0×10 6 t or so. Waste oil contains a large amount of organic matter, which has the duality of polluting the environment and recycling. At present, my country's waste cooking...

Claims

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Application Information

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IPC IPC(8): C10M121/04C10M159/12C10M169/02C10M169/06
Inventor 熊丽萍何忠义张闫唐骏朱星星
Owner EAST CHINA JIAOTONG UNIVERSITY
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