Method and production device for continuously producing alkyl glucoside

A technology for alkyl glycosides and production equipment, which is applied in the field of continuous production of alkyl glycosides and production equipment, can solve the problems of easy accumulation at the bottom of equipment, deepened product color, slow reaction speed, etc., and achieves elimination of color effects and impurities. The effect of removing and avoiding deposits

Active Publication Date: 2016-03-23
河北合佳医药科技集团股份有限公司
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Problems solved by technology

However, in the one-step production of alkyl glycosides, anhydrous glucose and fatty alcohols react in solid-liquid phase, and the reaction speed is slow. Anhydrous glucose is easy to accumulate at the bottom of the equipment, resulting in low utilization of sugar, complicated subsequent treatment, and subsequent dealcoholization. When the residual sugar in the material is coked at high temperature, it is easy to cause the color of the product to deepen
The currently reported one-step method for synthesizing alkyl glycosides, the color of synthetic crude alkyl glycosides is mostly brown, red, yellow, and the product can only reach light yellow after bleaching, and only anhydrous glucose can be used as raw material, and the production cost is relatively low. high

Method used

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  • Method and production device for continuously producing alkyl glucoside
  • Method and production device for continuously producing alkyl glucoside

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Experimental program
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Effect test

Embodiment 1

[0027] This embodiment relates to a group of methods for the continuous production of alkyl glycosides, in figure 1 in the production facility shown.

[0028] Such as figure 1 As shown, the production device for continuous production of alkyl glycosides includes a DSC control system 1, and the DSC control system 1 is used to regulate and control the reaction material mixer 2, continuous reactor 3, condenser 4, neutralization reactor 5, And the operation of continuous dealcoholization device 6, product blender 7, and continuous decolorization device 8; described continuous reactor 3 is horizontal, rake type stirring, and is divided into three reaction zones; described continuous dealcoholization device 6 comprises The first-stage scraper film evaporator 9, the second-stage short-range evaporator 10 and the third-stage short-range evaporator 11 arranged in sequence, the continuous decolorization device includes a first-stage decolorization tower 12, a second-stage decolorizatio...

Embodiment 11

[0031]Add anhydrous glucose, C12-14 fatty alcohol and dodecylbenzenesulfonic acid into the reaction material mixer in a molar ratio of 1:3.5:0.03, and under the control of the DSC control system, the uniformly mixed reaction raw materials are continuously added to In the continuous reactor, at a vacuum degree of 10-15mmHg and a temperature of 110°C, stay for reaction for 3 hours, then enter the condenser to cool down to 60°C, then enter the neutralization reactor, and adjust by continuously adding the mixture of MgO and sodium hydroxide The pH is 9, and a milky white reaction mixture containing alkyl glycosides and fatty alcohols is obtained. The reaction mixture enters a continuous dealcoholization device, and at a vacuum degree of 4mmHg and a temperature of 130°C, the unreacted C12-14 fatty alcohols are removed to obtain the product alkanes Alkyl glycosides are prepared by adding water to form an alkyl glycoside solution with a content of 50%, and finally decolorized by a con...

Embodiment 12

[0034] Add glucose monohydrate, C16-18 fatty alcohol and p-toluenesulfonic acid in a molar ratio of 1:4:0.04 to the reaction material mixer, and under the control of the DSC control system, the uniformly mixed reaction raw materials are continuously added to the continuous reactor In the reactor, stay in the reaction for 2.5 hours at a vacuum degree of 15-20mmHg and a temperature of 150°C, then enter the condenser to cool down to 70°C, then enter the neutralization reactor, and adjust the pH by continuously adding the mixture of NaO and sodium hydroxide. 9.5, to obtain a milky white reaction mixture containing alkyl glucoside and fatty alcohol. The reaction mixture enters a continuous dealcoholization device, and at a vacuum degree of 3mmHg and a temperature of 150°C, the unreacted C16-18 fatty alcohol is removed to obtain the product alkyl glycoside , adding water to prepare an alkyl glycoside solution with a content of 50%, and finally decolorizing through a continuous decolo...

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Abstract

The invention relates to a method for continuously producing alkyl glucoside. According to the method, anhydrous glucose or glucose monohydrate and fatty alcohol carry out reactions continuously; then the reaction product is subjected to a continuous three grade vacuum distillation alcohol removing treatment, which comprises primary scraping plate evaporation, secondary short term evaporation, and tertiary short term evaporation, to remove fatty alcohol, and finally the reaction product is subjected to a continuous three-grade counter current discoloring treatment, which adopts ozone as the discoloring agent, so as to produce colorless, transparent, high purity and high quality alkyl glucoside. The obtained alkyl glucoside is colorless, transparent, and tasteless, and has the advantages of stable quality, high surface activity, good ecological safety, good intermiscibility, and low production cost. At the same time, the invention also relates to a production device capable of producing alkyl glucoside continuously, and has the advantages of high automation degree, short procedure, and suitability for large scale industrial production.

Description

technical field [0001] The present invention relates to a method for producing alkyl glycosides, in particular to a method for continuously producing alkyl glycosides, and at the same time, the present invention also relates to a production device used in the method for continuously producing alkyl glycosides. Background technique [0002] Alkyl glycosides (also known as alkyl polyglycosides, or APG for short) are formed by the dehydration of fatty alcohols and glucose, a natural renewable resource, under an acid catalyst. The alkyl group is used as the lipophilic group, and the sugar unit is used as the hydrophilic group. Because it has almost no stimulation and can be completely biodegraded, it is a new type of nonionic surfactant with comprehensive performance. It has the characteristics of ordinary nonionic and anionic surfactants, and has high surface activity, good ecological safety and Compatibility, is the internationally recognized first-choice "green" functional su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/04C07H1/00C07H1/06
CPCC07H1/00C07H1/06C07H15/04
Inventor 刘振强董永利王荣霞
Owner 河北合佳医药科技集团股份有限公司
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