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
CN101766974AInactive Publication Date: 2010-07-07SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Publication Date
2010-07-07
Estimated Expiration
Not applicable · inactive patent

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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.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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