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Preparation method of octyl glucopyranoside

A technology of glucoside and octane, which is applied in the field of non-ionic surfactant preparation, can solve the problems of long condensation reaction time, poor decolorization and bleaching effect, and poor decolorization stability, so as to reduce the occurrence of side reactions and improve reaction rate and quality stable effect

Active Publication Date: 2014-12-31
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) Most of the currently reported one-step methods for preparing octyl glucoside use 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 octyl glucopyranoside
  • Preparation method of octyl glucopyranoside

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The main process equipment is: stirring equipment, condensation reactor, reduced-pressure flashing equipment, neutralization reactor, dealcoholization reactor, decolorization and impurity removal equipment, solid-liquid separation equipment, mixing equipment, etc., among which the condensation reactor is jet stream The chemical reactor, the vacuum flash evaporation equipment is a flash tank, the neutralization reactor is a tank-type stirred chemical reactor, the evaporation and dealcoholization equipment is a vacuum evaporator, the decolorization and impurity removal equipment is a flat electrochemical reactor, stirring equipment It is a tank reactor, and the mixing equipment is a mixing tank.

[0048] As shown in the figure, a method for preparing octyl glucoside is to prepare an aqueous solution of octyl glucoside using octanol and glucose as raw materials. The method steps are as follows:

[0049] (1) Sugar liquid preparation: Add 10 kg of water into the tank reactor, the...

Embodiment 2

[0059] The main process equipment is: basically the same as the first embodiment, except that the condensation reactor is an impinging stream chemical reactor, and the decolorization and impurity removal equipment is a fixed bed electrochemical reactor.

[0060] As shown in the figure, a method for preparing octyl glucoside is to prepare an aqueous solution of octyl glucoside using octanol and glucose as raw materials. The method steps are as follows:

[0061] (1) Sugar liquid preparation: Add 10 kg of water into the tank reactor, then add 10 kg of glucose to it, and the mass ratio of glucose to water is 1.0: 1.0;

[0062] (2) Preheating: heating the sugar liquid material obtained in the previous step to 90°C, and then keeping it warm;

[0063] (3) Condensation reaction: The sugar liquid that has been preheated in the previous step and the alkyd mixture that has been preheated to 170°C are respectively filtered to remove solid impurities, and then pumped into the impinging stream chemi...

Embodiment 3

[0071] The main process equipment is basically the same as the first embodiment, except that the condensation reactor is a plug flow chemical reactor, and the decolorization and impurity removal equipment is a fluidized bed electrochemical reactor.

[0072] As shown in the figure, a method for preparing octyl glucoside is to prepare an aqueous solution of octyl glucoside using octanol and glucose as raw materials. The method steps are as follows:

[0073] (1) Sugar liquid preparation: Add 10 kg of water into the tank reactor, then add 9 kg of glucose to it, and the mass ratio of glucose to water is 0.9: 1.0;

[0074] (2) Preheating: heating the sugar liquid material obtained in the previous step to 100°C, and then keeping it warm;

[0075] (3) Condensation reaction: The sugar liquor that has been preheated and heated up in the previous step and the alkyd mixture that has been preheated to 180°C are respectively filtered to remove solid impurities, and then pumped into a flat plug flow ...

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Abstract

The invention relates to a preparation method of octyl glucopyranoside. Octanol and glucose as raw materials are prepared into an octyl 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 present invention relates to a method for preparing a nonionic surfactant, in particular to a method for preparing a nonionic surfactant using glucose and octanol as raw materials through sugar liquid preparation, preheating and temperature rise, condensation reaction, decompression flash evaporation, pH adjustment, evaporation dealcoholization, The invention discloses a method for preparing an aqueous solution of octyl glucoside by decolorizing, removing impurities, blending and mixing, and belongs to the technical field of fine chemicals. Background technique [0002] Alkyl glycosides, referred to as APG, are synthesized from renewable resources, natural fatty alcohols and glucose. They are a new type of nonionic surfactant with excellent performance. They have very good ecological and toxicological properties, excellent physical and chemical properties and good compatibility. Performance, with low surface tension, strong wetting and detergency,...

Claims

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Application Information

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