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Chromatographic separation device and method for separating vitamin C mother liquor using same

A chromatographic separation and vitamin technology, which is applied in separation methods, ion exchange treatment devices, filtration separation and other directions, can solve the problems of inability to recover gulonic acid, unsuitable for industrial production, complicated and complicated processes, etc., and achieves low cost and high product quality. , the effect of reducing pollution

Active Publication Date: 2021-07-30
山东兆光色谱分离技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology generally adopts 1. fixed bed technology for the treatment of mother liquor; 2. oxidation treatment of catalyst, nitric acid and sulfuric acid; 3. using simulated moving bed technology, because the raffinate contains gullonic acid with a relatively dilute concentration, it is discharged as sewage , resulting in the inability to recover gulonic acid
The above-mentioned technology has defects such as high production cost, relatively cumbersome and complicated process, and the use of a large amount of chemical and toxic substances, so it is not suitable for industrial production

Method used

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  • Chromatographic separation device and method for separating vitamin C mother liquor using same

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Experimental program
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Effect test

Embodiment 1

[0041] Such as figure 1 As shown, a chromatographic three-component separation device includes six separators 1 connected in series in sequence, and a distributor 3, a separation material layer 4 and a collector 5 are sequentially arranged in the tank body 2 of the separator from top to bottom, and the separation material Layer 4 is filled with strong acidic cationic resin; the inlets of the distributor are connected with the mother liquor inlet pipeline 6 and the water inlet pipeline 7, and the outlets of the collector 5 are connected with the discharge pipe 8, and the discharge pipeline 8 includes 3 discharge branch pipes , are respectively vitamin C discharge branch pipe 9, gulong acid discharge branch pipe 10, and miscellaneous acid discharge branch pipe 11, and are respectively connected to the storage tank. The outlet of the collector of the upper-stage separator communicates with the inlet of the distributor of the lower-stage separator through the inter-body pipeline 1...

Embodiment 2

[0056] Use activated carbon to decolorize the vitamin C mother liquor to be treated at a dosage of 1 kg / ton of dry matter at 55°C to remove protein and a small amount of impurities in the feed liquid and reduce organic pigments in the feed liquid; then use cardboard Filtration is carried out to obtain the filtrate;

[0057] The filtrate was evaporated and concentrated at 45°C. After concentration, the content of vitamin C in the system was 190 mg / mL, and the content of gulong acid was 60 mg / mL;

[0058] The concentrated liquid is ion-exchanged with an ion-exchange column filled with 88H hydrogen-type cation-exchange resin, and the content of sodium ions in the ion-exchange-treated solution is 50 ppm;

[0059] In order to reduce the adverse effect of protein and impurities on the resin in the separator, the ion-exchange-treated solution is subjected to bag filtration and membrane precision filtration in sequence. The pore size of the bag filter is 0.5um, and the pore size of th...

Embodiment 3

[0063] Use activated carbon to decolorize the vitamin C mother liquor to be treated at a dosage of 3 kg / ton dry matter at 45°C to remove protein and a small amount of impurities in the feed liquid and reduce organic pigments in the feed liquid; then use cardboard Filtration is carried out to obtain the filtrate;

[0064] The filtrate was evaporated and concentrated at 50°C. After concentration, the content of vitamin C in the system was 150 mg / mL, and the content of gulong acid was 70 mg / mL;

[0065] The concentrated liquid is ion-exchanged with an ion-exchange column filled with 88H hydrogen-type cation-exchange resin, and the content of sodium ions in the ion-exchange-treated solution is 30ppm;

[0066] In order to reduce the adverse effects of protein and impurities on the resin in the separator, the ion-exchange-treated solution is subjected to bag filtration and membrane precision filtration in sequence. The pore size of the bag filter is 1.5um, and the pore size of the m...

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Abstract

The invention provides a chromatographic separation device and a method for using the chromatographic separation device to separate vitamin C mother liquor. The chromatographic separation device includes a feed pipe, a discharge pipe, and a plurality of separators connected in series in series. Distributors, separation material layers, and collectors are arranged in sequence in the tank of the separators from top to bottom, and each distributor communicates with the feed pipe. , each collector communicates with the discharge pipe; the outlet of the collector of the upper separator communicates with the inlet of the distributor of the next separator; the outlet of the collector of the last separator communicates with the outlet of the first separator The inlet of the distributor is connected. The vitamin C mother liquor is decolorized, filtered, concentrated, ion exchanged and secondary filtered in sequence, and then sent to a chromatographic separation device for separation to obtain gulonic acid and vitamin C. The chromatographic separation device and the method for separating vitamin C mother liquor provided by the application have short process routes, low operating costs, and greatly reduced sewage discharge.

Description

technical field [0001] The invention relates to the field of separation and purification, in particular to a chromatographic separation device and a method for separating vitamin C mother liquor using the same. Background technique [0002] Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that widely exists in the human body, animals and plants. The human body cannot synthesize it by itself and must be ingested from the outside world. The product is white crystal or crystalline powder, odorless, sour taste; easy to turn yellow after prolonged storage, easily soluble in water, slightly soluble in ethanol, insoluble in chloroform or ether. Vitamin C has strong reducibility, and the enediol group in its structure is unstable and easily oxidized to diketone group. Vitamin C has a wide range of uses and is often used as a food additive or antioxidant. It is also widely used in medicine and clinical practice. It is used in the treatment of scurvy, colds, cardiov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D15/08B01D15/26B01D15/20B01D15/36B01D36/00
Inventor 王兆光
Owner 山东兆光色谱分离技术有限公司
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