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Preparation method of lauryl glucopyranoside

A technology of glucoside and lauryl, which is applied in the field of preparation of non-ionic surfactants, can solve the problems of long condensation reaction time, long reaction time, and slow reaction speed, so as to improve the reaction rate and yield and reduce sugar Effects of occurrence of side reactions, improvement of conversion rate and rate

Active Publication Date: 2014-12-17
扬州晨化新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (3) The one-step method reported so far for the preparation of lauryl alkyl glucoside all uses anhydrous glucose microparticles as raw materials, and the preparation cost is high
[0011](4) Difficult process operation and control, low production efficiency and low yield
[0012](5) Hydrogen peroxide is used as oxidant for decolorization, the decolorization and bleaching effect is poor, and the decolorization stability is poor

Method used

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  • Preparation method of lauryl glucopyranoside
  • Preparation method of lauryl glucopyranoside

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The main process equipment is: stirring equipment, condensation reactor, decompression flash reaction equipment, neutralization reactor, dealcoholization reactor, decolorization and impurity removal equipment, solid-liquid separation equipment, deployment and mixing equipment, etc., among which the condensation reactor is jet The flow chemical reactor, the decompression flashing equipment is a flash tank, the neutralization reactor is a tank-type stirred chemical reactor, the evaporative dealcoholization equipment is an evaporator, the decolorization and impurity removal equipment is a flat-plate electrochemical reactor, and the stirring equipment is The tank reactor, the deployment and mixing equipment is the deployment and mixing tank.

[0047] As shown in the figure, a method for preparing lauryl alkyl glucoside is a method for preparing lauryl alkyl glucoside aqueous solution with lauryl alcohol and glucose as raw materials, and the method steps are as follows:

[0...

Embodiment 2

[0058] Main process equipment is: basically the same as embodiment one, the difference is that the condensation reactor is an impingement flow chemical reactor, and the decolorization and impurity removal equipment is a fixed bed electrochemical reactor.

[0059] As shown in the figure, a method for preparing lauryl alkyl glucoside is a method for preparing lauryl alkyl glucoside aqueous solution with lauryl alcohol and glucose as raw materials, and the method steps are as follows:

[0060] (1) Preparation of sugar solution: 10 kg of water was added to the tank reactor, and then 10 kg of glucose was added thereto, and the mass ratio of glucose to water was 1.0: 1.0;

[0061] (2) Preheating and heating: heat the sugar liquid material obtained in the previous step to 90°C, and then keep it warm;

[0062] (3) Condensation reaction: The sugar solution preheated in the previous step and the alkyd mixture material that has been preheated to 170°C are respectively filtered to remove ...

Embodiment 3

[0070] The main process equipment is: basically the same as in Example 1, the difference is that the condensation reactor is a plug-flow chemical reactor, and the decolorization and impurity removal equipment is a fluidized bed electrochemical reactor.

[0071] As shown in the figure, a method for preparing lauryl alkyl glucoside is a method for preparing lauryl alkyl glucoside aqueous solution with lauryl alcohol and glucose as raw materials, and the method steps are as follows:

[0072] (1) Preparation of sugar solution: 10 kg of water was added to the tank reactor, and then 9 kg of glucose was added thereto, and the mass ratio of glucose to water was 0.9: 1.0;

[0073] (2) Preheating and heating: heat the sugar liquid material obtained in the previous step to 100°C, and then keep it warm;

[0074] (3) Condensation reaction: The sugar solution preheated in the previous step and the alkyd mixture material that has been preheated to 185°C are respectively filtered to remove so...

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Abstract

The invention relates to a preparation method of lauryl glucopyranoside. Lauryl alcohol and glucopyranoside as raw materials are prepared into a lauryl glucopyranoside aqueous solution. The preparation method comprises the following steps of 1, glucose liquid preparation, 2, pre-heating for temperature increasing, 3, a condensation reaction, 4, reduced pressure flashing, 5, pH value adjustment, 6, solid-liquid separation, 7, evaporation alcohol-removal, 8, decoloration purification, and 9, blending. The preparation method has the advantages that a process flow is reasonable; reaction time is short; a production cost is low; quality is stable; a yield is high; reaction processes are safe and reliable; favorable conditions of separation and refining of chemical reaction products are provided; conditions of process industrialization are provided; and the preparation method is simple, convenient and fast.

Description

technical field [0001] The invention relates to a method for preparing a nonionic surfactant, in particular to a method for preparing a sugar solution using glucose and lauryl alcohol as raw materials, preheating and heating, condensation reaction, decompression flash evaporation, adjusting pH value, and evaporative dealcoholization. The invention discloses a method for preparing lauryl alkyl glucoside by decolorizing, removing impurities, blending and mixing, and belongs to the technical field of fine chemicals. Background technique [0002] Alkyl glycoside, referred to as APG, is synthesized from renewable resources, natural fatty alcohol and glucose. It is a new type of non-ionic surfactant with comprehensive performance. Compatibility, low surface tension, strong wetting and detergency, rich and delicate foam, can be compounded with any type of surfactant, the synergistic effect is obvious, and it is non-toxic, harmless, and non-irritating, and its biodegradability is be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H1/00C07H15/04C07H1/06
Inventor 姜海峰许文林于子洲董晓红姚干兵
Owner 扬州晨化新材料股份有限公司
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