Method and system for low residual multi-stage stripping of vitamin E by-product fatty acid solvent

A technology for vitamins and by-products, applied in the field of vitamin E preparation, can solve the problems of low recovery rate of vitamin E, serious environmental pollution, difficult reaction control, etc., and achieves high purity and recovery rate, low environmental pollution, and easy reaction control. Effect

Active Publication Date: 2018-11-09
JIANGSU CONAT BIOLOGICAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Domestic production of vitamin E has many unit operations, high residual volume (greater than 5000ppm), high labor intensity, serious environmental pollution, difficult reaction control, low recovery rate and low purity of vitamin E

Method used

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  • Method and system for low residual multi-stage stripping of vitamin E by-product fatty acid solvent
  • Method and system for low residual multi-stage stripping of vitamin E by-product fatty acid solvent
  • Method and system for low residual multi-stage stripping of vitamin E by-product fatty acid solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The present embodiment provides one embodiment of a method for centrifugal separation of 50VE and sterol, comprising:

[0030] Dissolve 1t of soybean oil deodorized distillate in 5000L acetone-methanol mixed solvent (the volume ratio of acetone to methanol is 1.5:1), and inject this mixed solution into the heat dissipation device 301 of the second heat exchange unit 300 for low-temperature crystallization deal with. During this low-temperature crystallization process, the present invention needs to control the initial temperature in the heat dissipation device 301 to be 40°C, and then slowly cool down to -5°C within 4 hours, and keep it for 24 hours to obtain a crystallization mixed solution. Then, the crystallization mixed solution in the cooling device 301 is transferred to the filtration unit 700 for filtration, and the filtrate is centrifuged, washed and dried to obtain a deodorized distillate from which the sterols are removed. The centrifugation is at 6000 rpm for...

Embodiment 2

[0066] Dissolve 1t soybean oil deodorized distillate in 6000L acetone-methanol mixed solvent (the volume ratio of acetone to methanol is 2:1), control the temperature to 35°C, then slowly cool down to -5°C within 5h, and keep 24h, then filtered, the filtrate was centrifuged, washed and dried to obtain the deodorized distillate from which the sterol was removed, and the centrifugation was at 7000rpm for 35min;

[0067] Distill the deodorized distillate from the sterols at a distillation temperature of 230 °C, a feed temperature of 80 °C, and a rotational speed of 120 r / min to obtain distillate and residual liquid respectively; extract, and then evaporate the solvent to obtain a vitamin E product.

[0068] The content of the vitamin E product in Example 2 was measured to be 51.4%, the recovery rate was 82.3%, and the residual volume was 82 ppm.

[0069] The "low-temperature crystallization" and "filtration" in the above-mentioned process of this example are realized by the comb...

Embodiment 3

[0071] Dissolve 1t of corn oil deodorized distillate in 5500L acetone-methanol mixed solvent (the volume ratio of acetone to methanol is 2:1), control the temperature to 40°C, then slowly cool down to -5°C within 6h, and keep 20h, then filtered, the filtrate was centrifuged, washed and dried to obtain the deodorized distillate from which the sterol was removed, and the centrifugation was at 6000rpm for 35min;

[0072] Distilling the deodorized distillate from the sterols at a distillation temperature of 230 °C, a feed temperature of 90 °C, and a rotational speed of 160 r / min to obtain distillate and residual liquid respectively; extract, and then evaporate the solvent to obtain a vitamin E product.

[0073] The content of the vitamin E product in Example 3 was measured to be 50.3%, the recovery rate was 84.1%, and the residual volume was 83 ppm.

[0074] The "low-temperature crystallization" and "filtration" in the above-mentioned process of this example are realized by the c...

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Abstract

The invention discloses a method and a system for low-residual multi-stage stripping of a vitamin E by-product fatty acid solvent, and the method is as follows: distilling a deodorized distillate fromwhich sterol is removed to respectively obtain a distillate and a residual liquid; performing multi-stage stripping on the distillate, and evaporating a solvent to obtain a vitamin E product. The method has the advantages of extremely low residual capacity, low labor intensity, low environmental pollution, easy control of reaction, and high purity and high recovery rate of the vitamin E.

Description

technical field [0001] The invention belongs to the technical field of vitamin E preparation, and in particular relates to a low-residue multi-stage stripping method of a vitamin E by-product fatty acid solvent and a combined system of crystallization and filtration. Background technique [0002] Vegetable oil deodorization distillate is a mixture of fractions obtained during deodorization of vegetable oil. It mainly contains a large amount of free fatty acids, vitamin E, glycerides and other components. [0003] Vitamin E is a fat-soluble vitamin, and its hydrolysis product is tocopherol, which is one of the most important antioxidants. It is soluble in organic solvents such as fat and ethanol, insoluble in water, stable to heat and acid, unstable to alkali, sensitive to oxygen, and insensitive to heat, but the activity of vitamin E is significantly reduced during frying. Tocopherol can promote the secretion of sex hormones, increase the vitality and quantity of sperm in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/14B01D3/38B01D3/32
CPCB01D3/146B01D3/32B01D3/38
Inventor 陈其林吴正章方华郭春荣张鹏
Owner JIANGSU CONAT BIOLOGICAL PROD
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