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Method for preparing nonionic surfactant with alkamine modified swill-cooked dirty oil

A non-ionic surface and waste oil technology, which is applied in the field of preparation of non-ionic surfactants, can solve problems such as polluting rivers and groundwater, food safety problems, and clogged sewers, and achieve the goals of eliminating pollution, excellent comprehensive performance, and increasing added value Effect

Inactive Publication Date: 2010-07-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because it is rich in nutrients, after fermentation, it will cause eutrophication of the water body, pollute rivers and groundwater; the condensation of oily hogwash will block the sewer during the discharge process, and will produce flammable gases such as methane gas, which may explode in case of fire.
[0004] (2) If toxic and harmful hogwash oil or hogwash is used to directly breed livestock (mainly pigs), a large number of pathogens will enter people's daily life through the food chain, causing food safety problems
The above patents mainly describe the alcoholysis or ammonolysis of waste oil, but none of them involve the addition of ethylene oxide or propylene oxide after the amidation modification of waste edible oils, and apply it to the preparation of nonionic surfactants craft

Method used

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  • Method for preparing nonionic surfactant with alkamine modified swill-cooked dirty oil

Examples

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Embodiment 1

[0042] 1) Refining of waste oil

[0043] Raise the temperature of the crude waste oil to 75°C, then add activated clay with a mass of 3% of the crude waste oil, stir for 20 to 30 minutes, then carry out suction filtration, transfer the grease separated by suction filtration to another reaction kettle, and then heat to 92 ℃, stirring, vacuuming to 0.4Mpa, stirring time 30-60min, when the moisture content in the oil is lower than 0.5%, it is discharged to obtain refined waste oil; the activated clay is an industrial product, the particle size is less than 200 mesh, the activity The density is greater than 140mmol / kg, and the specific surface area is 130-150m 2 / g;

[0044] 2) Amidation modification of refined waste oil

[0045] Mix the refined waste oil and monoethanolamine in a mass ratio of 100:6.3 and then add it to the reactor, and add the catalyst sodium methoxide with a quality of 0.8% of the refined waste oil to the reactor, and react at 130°C for 3 to 4 hours until the...

Embodiment 2

[0049] 1) Refining of waste oil

[0050] Raise the temperature of the crude waste oil to 90°C, then add activated clay with a quality of 4% of the crude waste oil, stir for 20 to 30 minutes, then carry out suction filtration, transfer the grease separated by suction filtration to another reaction kettle, and then heat to 94 ℃, stirring, vacuuming to 0.5Mpa, stirring time 30-60min, when the moisture content in the oil is lower than 0.5%, it is discharged to obtain refined waste oil; the activated clay is an industrial product, the particle size is less than 200 mesh, the activity The density is greater than 140mmol / kg, and the specific surface area is 130-150m 2 / g;

[0051] 2) Amidation modification of refined waste oil

[0052] Mix the refined waste oil and monoethanolamine in a mass ratio of 100:12.5 and add it to the reactor, and add the catalyst sodium ethoxide with 1% of the refined waste oil mass to the reactor, react at 140°C for 3-4 hours, and wait for the reaction t...

Embodiment 3

[0056] 1) Refining of waste oil

[0057] Raise the temperature of the crude waste oil to 80°C, then add activated clay with a mass of 5% of the crude waste oil, stir for 20 to 30 minutes, then carry out suction filtration, transfer the grease separated by suction filtration to another reaction kettle, and then heat to 92 ℃, stirring, vacuuming to 0.4Mpa, stirring time 30-60min, when the moisture content in the oil is lower than 0.5%, it is discharged to obtain refined waste oil; the activated clay is an industrial product, the particle size is less than 200 mesh, the activity The density is greater than 140mmol / kg, and the specific surface area is 130-150m 2 / g;

[0058] 2) Amidation modification of refined waste oil

[0059] Mix the refined waste oil and diethanolamine in a mass ratio of 100:11 and add them to the reactor, and add the catalyst sodium methoxide with a quality of 0.8% of the refined waste oil to the reactor, and react at 130°C for 3 to 4 hours. Obtain amidat...

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Abstract

The invention relates to a method for preparing nonionic surfactant with alkamine modified swill-cooked dirty oil. The method comprises the following steps: firstly refining the reclaimed swill-cooked dirty oil, secondly using alkamine to perform amidation modification, and then performing ethylene oxide or propylene oxide addition of the modified mixture product to prepare the environmentally friendly nonionic surfactant with high cost performance. The product is pale yellow-reddish brown viscous fluid, and the HLB value is 6-15 which is determined by the structure of the product and the adduct number of ethylene oxide or propylene oxide. The nonionic surfactant has good emulsifiability and functions of softening and defoaming, is suitable to be used in fields of leather, textile dyeing and finishing, industrial cleaning, pesticide and daily chemical engineering and has wide application range and good comprehensive performance. The design of the technical route of the invention is novel and unique and has innovativeness. On one side, the additional value of discarded edible oils and fats can be greatly increased, which has great significance in removing the pollution of discarded edible oils and fats; and on the other side, new chemical products can be produced.

Description

technical field [0001] The invention relates to a method for preparing a nonionic surfactant, in particular to a method for preparing a nonionic surfactant from waste oil modified with alcohol amine. Background technique [0002] While the catering industry provides convenience for people, it also brings more and more urgent pollution problems to the living environment. The harm of untreated waste edible oils and fats is very serious: [0003] (1) Under normal circumstances, part of the waste edible oil and fat produced in daily life is discharged into the sewer together with the waste water, and flows to the river. Because it is rich in nutrients, after fermentation, it will cause eutrophication of the water body, pollute rivers and groundwater; the condensation of oily hogwash will block the sewer during the discharge process, and will produce flammable gases such as methane gas, which may explode in case of fire. . [0004] (2) If toxic and harmful hogwash oil or hogwas...

Claims

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Application Information

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IPC IPC(8): B01F17/42B01F17/22C09K23/42C09K23/22
Inventor 强西怀张辉毛李蓉董艳勇汤晓进王艳娇冯洪艳高志辉
Owner SHAANXI UNIV OF SCI & TECH
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