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Triethanolamine-modified gutter oil-based method for preparation of metal cutting fluid

A technology of metal cutting fluid and triethanolamine, which is applied in the direction of base material, petroleum industry, lubricating composition, etc., can solve the problems of high energy consumption, biological toxicity, poor solubility, etc., and achieve reduced production costs and low biological toxicity , Excellent lubricating effect

Inactive Publication Date: 2015-04-22
XIJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also three deficiencies: first, after the cutting fluid is diluted with water, there will be a small amount of waste oil that has not been emulsified on the surface; second, the additive lead naphthenate has certain biological toxicity; third, some additives , such as sodium molybdate, boric acid and sodium benzoate, have poor solubility in the whole system, require long-term stirring, and consume a lot of energy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing metal cutting fluid based on triethanolamine modified waste oil, comprising the following steps:

[0019] Measure 1L of waste oil, after filtering, add the filtrate into a 5L three-necked flask, stir, add 1L of 8% hydrochloric acid aqueous solution, heat up, and react at 85°C for 5h. After the reaction system was lowered to room temperature, it was allowed to stand still for liquid separation, and the oil phase was washed three times with 1 L of water to obtain acid-treated waste oil.

[0020] Weigh 500g of acid-treated waste oil, put it into a 2L three-necked flask, add 163g of triethanolamine under stirring conditions, stir at room temperature for 1h, and then add 20 # 163g of mechanical oil, 125g of chlorinated paraffin, 75g of sodium petroleum sulfonate, 100g of alkylphenol polyoxyethylene ether, 75g of sodium naphthenate, 38g of s-triazine, 38g of benzotriazole, and stir for 30 minutes to obtain the desired product. Store sealed in a dark pl...

Embodiment 2

[0022] A method for preparing metal cutting fluid based on triethanolamine modified waste oil, comprising the following steps:

[0023] Measure 1L of waste oil, after filtering, add the filtrate into a 5L three-necked flask, stir, add 1L of 8% hydrochloric acid aqueous solution, heat up, and react at 85°C for 5h. After the reaction system was lowered to room temperature, it was allowed to stand still for liquid separation, and the oil phase was washed three times with 1 L of water to obtain acid-treated waste oil.

[0024] Weigh 500 g of acid-treated waste oil, add it to a 2L three-necked flask, add 156 g of triethanolamine under stirring conditions, stir at room temperature for 1 hour, and then add 20 # 89g of mechanical oil, 89g of chlorinated paraffin, 67g of sodium petroleum sulfonate, 78g of alkylphenol polyoxyethylene ether, 67g of sodium naphthenate, 33g of s-triazine, 33g of benzotriazole, and stir for 30 minutes to obtain the desired product. Store sealed in a dark p...

Embodiment 3

[0026] A method for preparing metal cutting fluid based on triethanolamine modified waste oil, comprising the following steps:

[0027] Measure 1L of waste oil, after filtering, add the filtrate into a 5L three-necked flask, stir, add 1L of 8% hydrochloric acid aqueous solution, heat up, and react at 85°C for 5h. After the reaction system was lowered to room temperature, it was allowed to stand still for liquid separation, and the oil phase was washed three times with 1 L of water to obtain acid-treated waste oil.

[0028] Weigh 500g of acid-treated waste oil, put it into a 2L three-necked flask, add 150g of triethanolamine under stirring conditions, stir and react at room temperature for 1h, then add 60g of No. 0 diesel oil, 80g of chlorinated paraffin, 50g of sodium petroleum sulfonate, alkylphenol Polyoxyethylene ether 70g, sodium naphthenate 50g, s-triazine 20g, benzotriazole 20g, stir for 30 minutes to obtain the desired product, and store in a dark place sealed.

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Abstract

A triethanolamine-modified gutter oil-based method for preparation of metal cutting fluid comprises the following steps: filtering gutter oil to remove insoluble substances, adding the filtrate into a reaction vessel, adding an inorganic acid aqueous solution of the same volume, warming up and stirring for a reaction, cooling the reaction system to room temperature, standing for liquid separation, washing an oil phase by the use of water of the same volume for three times so as to obtain acid-treated gutter oil; and adding the acid-treated gutter oil into a reaction kettle, adding triethanolamine while stirring, stirring at room temperature for a reaction, successively adding auxiliary base oil, chlorinated paraffin, petroleum sodium sulfonate, alkylphenol polyoxyethylene, sodium napthionate, s-triazine and benzotriazole, and stirring to obtain the required product. The method is simple to operate and easy to realize. By the method, the metal cutting fluid with excellent performance can be obtained, and comprehensive utilization of wastes can be realized.

Description

technical field [0001] The invention belongs to the technical field of metal cutting fluid preparation, and in particular relates to a method for preparing metal cutting fluid based on triethanolamine-modified waste oil. Background technique [0002] Waste oil contains a large amount of toxins, and its degradation rate is very slow in the environment, which is very polluting to the environment. In human production and life, a large amount of gutter oil is produced every day. Many unscrupulous traders simply process the gutter oil, sell it as edible oil, and return it to people's tables. Long-term intake of waste oil by humans will lead to developmental disorders, diarrhea and enteritis, as well as liver, heart and kidney enlargement, fatty liver and other lesions. The rational utilization of waste waste oil is an important problem that people face. [0003] For the comprehensive utilization of waste oil, we applied for a national invention patent in 2010 (patent authorizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M109/02C10M169/04C10N30/04C10N30/06C10N40/22
Inventor 苗宗成王蕾李仲谨
Owner XIJING UNIV
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