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Method for preparing antirust agent from waste oil

A technology of waste oil and anti-rust agent, which is applied in the preparation of carboxylic acid amide, chemical instruments and methods, and the preparation of organic compounds, etc., can solve the problems of health hazards and poor application of waste oil, and improve the anti-rust Performance, enhanced anti-rust effect, mild reaction conditions

Inactive Publication Date: 2013-09-18
NEUFTECH BIOTECH HEFEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there is no good way to apply waste oil, it directly flows back to the dining table, causing great harm to human health.

Method used

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  • Method for preparing antirust agent from waste oil
  • Method for preparing antirust agent from waste oil
  • Method for preparing antirust agent from waste oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: Take 10 grams of waste oil for removing impurities, add 1 g of maleic anhydride powder, under the protection of nitrogen, first heat the waste oil to 70-80 ° C, then add maleic anhydride, until the maleic anhydride dissolves completely, heat up to 195°C, stirred and reacted for 2 hours. Then cool to 150°C, add 8g diethanolamine, heat to 165°C, stir and react for 2 hours, get 17.5g of viscous liquid product after cooling, adopt Essentia LC-15C high performance liquid chromatograph to detect product, contain maleic oil in the product Acid diethanolamide, maleic linoleic acid diethanolamide, fatty acid diethanolamide, glycerin and unreacted diethanolamine. Samples were prepared to prepare 0.5%, 1%, and 1.5% aqueous solutions to test the antirust performance. The anti-rust grades of the three solutions are grade 3, grade 2 and grade 1 respectively.

Embodiment 2

[0036] Example 2: Take 8 grams of decontaminated waste oil, add 1 g of maleic anhydride, and heat to dissolve under nitrogen protection. The dissolution steps are the same as above. After the maleic anhydride is completely dissolved, the temperature is raised to 200° C., and the reaction is stirred for 1.5 hours. Cool to 150°C, add 12g of diethanolamine, heat to 170°C, stir and react for 2 hours, after cooling, 19.3g of viscous liquid product is obtained. Samples were prepared to prepare 0.5%, 1%, and 1.5% aqueous solutions to test the antirust performance. The anti-rust grades of the three solutions are grade 1, grade 0 and grade 0 respectively.

Embodiment 3

[0037] Example 3: Take 90 grams of decontaminated waste oil, add 10 g of maleic anhydride, and heat to dissolve under nitrogen protection. The dissolving steps are the same as above. After the maleic anhydride is completely dissolved, the temperature is raised to 195° C., and the reaction is stirred for 1 hour. Cool to 150°C, add 104g of diethanolamine, heat to 165°C, stir and react for 4 hours, after cooling, 194g of viscous liquid product is obtained. Samples were prepared to prepare 0.5%, 1%, and 1.5% aqueous solutions to test the antirust performance. The anti-rust grades of the three solutions are grade 2, grade 0 and grade 0 respectively.

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Abstract

The invention relates to a method for preparing an antirust agent from waste oil, and belongs to the technical fields of novel compound preparation and antirust agent preparation technologies. According to the method, maleic waste oil acid alcohol amine is generated by being subjected to reaction between the waste oil and maleic anhydride to obtain maleic waste oil and then being subjected to reaction between the maleic waste oil and alcohol amine. The waste oil serving as a raw material in the method is recycled oil in swill of a restaurant; a new application field is developed to the application of the waste oil. The adopted reaction conditions are mild; the technology is convenient to operate; the production cost is low. The obtained maleic waste oil acid alcohol amine is extremely high in rust resistance and can be used as the antirust agent applied to products such as cutting liquid and antirust water.

Description

technical field [0001] The invention relates to a method for preparing an antirust agent from waste oil. Background technique [0002] Waste oil is a general term for all kinds of low-quality oil in people's daily life. It can be divided into three categories: one is gutter oil in a narrow sense, that is, the greasy floating matter in the sewer or the oil that is simply processed and extracted from leftovers and leftovers (commonly known as swill) in hotels and hotels; The oil produced after the offal and pigskin processing and refining; the third is the oil used for frying food after it has been used more than a certain number of times, and then it is reused or re-used after adding some new oil to it. Waste oil comes from a wide range of sources. It is estimated that there are about 2-3 million tons of waste oil in my country every year. Because waste oil does not have a good application path, it directly returns to the dining table, causing great harm to people's health....

Claims

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Application Information

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IPC IPC(8): C10M141/06C10M133/16C07C233/20C07C231/02C10N30/12
Inventor 程庆华陆静刘霁余杨柳
Owner NEUFTECH BIOTECH HEFEI
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