Method for converting sodium gulonate to gulonic acid in Vit C production

A technology for the conversion of sodium gulonate, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems affecting industrial separation efficiency and benefits, large amount of water and chemical reagents, large amount of waste water discharge, etc. , to achieve the effect of comprehensive optimization of process flow, small footprint and saving regeneration costs

Active Publication Date: 2007-11-21
SANDA FILM SCI & TECH XIAMEN
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Problems solved by technology

Although the design and manufacture of the column is relatively simple, it has the disadvantages of intermittent treatment, periodic operation, low resin utilization rate, large amount of water and chemical reagents, and large waste water discharge, which affects the efficiency and benefits of industrial separation and has become a traditional process. weak link

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  • Method for converting sodium gulonate to gulonic acid in Vit C production

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Embodiment Construction

[0026] As shown in Figure 1, it is a process flow diagram of the present invention converting sodium guronate through continuous ion exchange. The present invention adopts the disc conveying type continuous countercurrent adsorption system, and adopts 732 strong acid type cation exchange resin. The continuous ion exchange process flow includes 20 unit systems as an example, and the processing capacity is 3-3.9L / H. According to the sodium gluconate itself The characteristics of the resin, the resin filling volume of each column is 300ml, the rotation speed is 18 degrees, and it is divided into the following subsections:

[0027] In the exchange area (including the 5th to 12th units), the parallel connection of the 5th to 8th units and the parallel connection of the 9th to 12th units are adopted. The feed liquid is in the forward mode; the feed flow rate of the feed liquid is 60ml / min;

[0028] After the exchange, the washing area (including the 2nd to 4th units) adopts the sing...

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Abstract

The invention discloses a method to convert gulonic sodium into gulonic acid in VC production by continual ion exchange device with strong-acid cation exchange resin and disc-convey continual counter adsorption system. This invention has continuity to increase resin utility and decrease agent usage with well benefit.

Description

technical field [0001] The invention relates to a method for producing vitamin C, in particular to the ion exchange technology for converting sodium guronate into guronic acid in the production of vitamin C. Background technique [0002] Vitamin C (Vc), that is, L-ascorbic acid, is a catalyst in the oxidation-reduction reaction of cells. It has strong physiological activity and participates in various metabolisms of the human body. It can reduce the fragility of capillaries, increase the body's resistance and prevent scurvy. It is used for adjuvant treatment of various acute and chronic infectious diseases and purpura, but the human body cannot synthesize it by itself and must be ingested from food. Vc is also widely used in various fields such as food, beverage, breeding, feed additive and cosmetic nutrition. [0003] In the traditional production of vitamin C, the conversion of sodium gulonate into gulonate is the separation technology of adsorption and ion exchange fixed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C59/185C07C51/347C07D307/62
Inventor 蓝伟光黄松青
Owner SANDA FILM SCI & TECH XIAMEN
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