Vitamin C production process improvement method

A production process and vitamin technology, applied in the separation/purification of carboxylic acid esters, separation/purification of carboxylic acid compounds, organic chemistry, etc., can solve the problems of related patents without the recycling of vitamin C mother liquor, and achieve operability Strong, mature process conditions, short process effect

Inactive Publication Date: 2013-08-21
南京凯通粮食生化研究设计有限公司
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[0007] Chinese patents have no patents related to th

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  • Vitamin C production process improvement method

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Embodiment Construction

[0024] The invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The present invention proposes a method for improving the vitamin C production process, such as figure 2 shown. After the first crystallization and centrifugal separation of Vc, the mother liquor is concentrated, and then the centrifuged mother liquor is separated by a simulated moving bed chromatographic separation device. The method uses simulated moving bed chromatographic separation technology, and has the characteristics of high degree of automation, simple operation, high separation strength and high concentration of separated products.

[0026] According to the method of the present invention, the used separating agent is a cationic separation resin or a cationic molecular sieve, which is loaded into a simulated moving bed chromatographic separation device. There are finished separating agents on the market with stable perfor...

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Abstract

The invention discloses a vitamin C production process improvement method, which comprises: adopting a simulated movement bed chromatographic separation device to separate and purify Vc, gulonic acid and gulonic acid methyl ester in a centrifugation separation mother liquor of Vc production, wherein three materials can be concurrently obtained through separation, the first material is an extraction liquid and is a vitamin C-rich component, the vitamin C purity is more than 90%, the vitamin C-rich component is concentrated and then directly returns to be subjected to crystallization with the original Vc solution, the second material is a raffinate and is a gulonic acid-rich component, the gulonic acid purity is more than 90%, the gulonic acid-rich component is concentrated and then returns to the original process to be esterified, converted and crystallized so as to be recycled, the third material is a raffinate and is a gulonic acid methyl ester-rich component, the gulonic acid methyl ester purity is more than 35%, and the gulonic acid methyl ester-rich component and the second component are combined and concentrated, and returns to the original process to be esterified, converted and crystallized so as to be recycled.

Description

technical field [0001] The present invention relates to a method for improving the production process of vitamin C (abbreviated as Vc), that is, a method for purifying Vc, gulonic acid and methyl guronate in the mother liquor from the centrifuged separation mother liquor produced by Vc, using simulated moving bed chromatography separation technology The invention belongs to the technical field of vitamin C production technology. Background technique [0002] my country is a big producer and exporter of vitamin C, possessing 90% of the world's production capacity, but so far, despite decades of development, most of the vitamin C industry still uses old technology, with high production costs and very limited profits. Underemployment. [0003] The production technology of vitamin C in the prior art is as figure 1 shown. [0004] In the production process of the prior art, after the first crystallization of the Vc solution, the centrifuged mother liquor (abbreviated as the pri...

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Application Information

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IPC IPC(8): C07D307/62C07C59/105C07C51/42C07C69/675C07C67/48
Inventor 周日尤李瑛伍玉碧
Owner 南京凯通粮食生化研究设计有限公司
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