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A kind of method that utilizes waste oil to prepare alkyl glycoside surfactant

A technology of surfactant and alkyl glycoside, which is applied in the field of preparation of nonionic surfactant, can solve the problems of high production cost and lower production cost of nonionic surfactant, achieve great social value, reduce production cost, good color effect

Active Publication Date: 2016-01-20
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high production cost of non-ionic surfactants, it has also become a bottleneck for its development
This technical route uses waste oil as a raw material to prepare alkyl glycoside nonionic surfactants, which can effectively reduce production costs, and there are no relevant patent reports at home and abroad.

Method used

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  • A kind of method that utilizes waste oil to prepare alkyl glycoside surfactant

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Experimental program
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Effect test

Embodiment 1

[0033] (1) Refining of waste oil

[0034]After filtering 300kg of rough gutter oil to remove impurities at room temperature, add 2kg of phosphoric acid with a concentration of 75%, degumming at 60°C, and stir thoroughly for 20 minutes, then centrifuge to remove the precipitate; add 2kg of sodium hydroxide for alkali refining, and stir quickly for 20 minutes , after standing for 10 hours, separate the waste oil in the upper layer; heat up the obtained waste oil to 75 ° C, add 8 kg of 100-mesh activated clay for decolorization, filter after stirring for 30 minutes, and transfer the separated waste oil into the reaction kettle. Vacuumize to 10kPa at room temperature, stir for 1 hour, and obtain 230kg of refined waste oil when the moisture content in the waste oil is detected to be lower than 0.1%.

[0035] (2) Reduction of refined waste oil

[0036] The above-mentioned 230kg of refined waste oil is transferred to a high-pressure reactor, and 0.3kg of Ni / Pd type catalyst is loade...

Embodiment 2

[0042] (1) Refining of waste oil

[0043] After filtering 300kg of rough gutter oil to remove impurities at room temperature, add 2kg of phosphoric acid with a concentration of 75%, degumming at 65°C, stirring thoroughly for 20 minutes, and centrifuging; adding 2kg of sodium hydroxide for alkali refining, stirring rapidly for 15 minutes, and statically After standing for 10 hours, separate the waste oil in the upper layer; raise the temperature of the obtained waste oil to 80°C, add 8kg of 100-mesh activated clay for decolorization, stir for 30 minutes and then filter, transfer the separated grease into the reaction kettle, and evacuate to 10kPa, Stir for 1 hour, and obtain 230 kg of refined waste oil when the water content in the waste oil is lower than 0.1%.

[0044] (2) Reduction of refined waste oil

[0045] The above-mentioned 230kg of refined waste oil is transferred to a high-pressure reactor, and 0.3kg of Ni / Pd type catalyst is loaded into diatomite, which contains Ni...

Embodiment 3

[0051] (1) Refining of waste oil

[0052] After filtering 300kg of rough gutter oil to remove impurities at room temperature, add 2kg of phosphoric acid with a concentration of 75%, degumming at 65°C, stirring thoroughly for 20 minutes, and centrifuging; adding 2kg of sodium hydroxide for alkali refining, stirring rapidly for 15 minutes, and statically After standing for 24 hours, separate the waste oil in the upper layer; raise the temperature of the obtained waste oil to 75°C, add 8kg of crude oil with 100-mesh activated clay for decolorization, stir for 30 minutes and then filter under reduced pressure, and transfer the separated oil into the reaction kettle. Vacuumize to 10kPa, stir for 1 hour, and obtain 230kg of refined waste oil when the water content in the waste oil is lower than 0.1%.

[0053] (2) Reduction of refined waste oil

[0054] The above-mentioned 230kg of refined waste oil is transferred to a high-pressure reactor, and 0.3kg of Ni / Pd type catalyst is loade...

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Abstract

The present invention relates to a method of preparing a nonionic surfactant, and a method of preparing an alkyl suglycoside surfactant utilizing a ditch oil.The method includes filtration, dehydrating, alkaline, decolorization, drying refining treatment of ditch oil; high pressure catalytic hydrotreeding reduction of hydrogenal ditch oil; preparation and purification of fatty alcohol and glucose reaction synthesis of alkyl glucoside surfactantA series of processes.The invention is uniquely utilized to prepare an alkyl glycoside using a particular compound catalyst, and the reaction conversion is more than 99%.The appearance of the product was a colorless to pale yellow viscous liquid or a white soft paste solid, and the HLB value was 10 to 15 (depending on the length of alkyric carbon chain).The method of the present invention is new and unique, innovative, and in one aspect reduces the contamination of the trench oil to the environment and reuses from the source to prevent the ditch oil. On the other hand, green, non-polluting, degradable nonionic surface activity.Agents, reduce production costs, replace or supplement chemical basis materials.

Description

technical field [0001] The invention relates to a preparation method of a nonionic surfactant, in particular to a method for preparing an alkyl glycoside surfactant from waste oil. Background technique [0002] Waste oil is a general concept, which is a general term for all kinds of low-quality oils, generally including hogwash oil, waste frying oil, waste oil produced by food and related enterprises, etc. Waste oil is divided into three categories: one is waste oil in a narrow sense, that is, greasy floating matter (waste oil) in the sewer or oil (swill oil) extracted from leftovers and leftovers (commonly known as swill) of hotels and restaurants through simple processing. ); the second is the oil produced after processing and refining inferior pork, pig viscera, and pig skin; the third is that the oil used for fried food has been used more than the specified requirements, and then it is reused or some new oil is added to it before use of oil. [0003] With the improveme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H15/04C07H1/00B01F17/56C09K23/56
Inventor 陈爽关宇刘会娥丁传芹谷莹露
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)