Preparation method of gamma-crystalline sorbitol

A technology for crystallizing sorbitol and sorbitol, which is applied in the field of preparation of γ-crystal sorbitol, can solve the problems that moisture absorption is not well improved, the viscosity of molten sorbitol is high, equipment wear is very serious, and the like. Economic and social benefits, good mobility, and not easy to absorb moisture

Active Publication Date: 2013-06-26
山东绿健生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the crystals are cooled, crushed and sieved, some of them are shipped as finished products, and some of the fine powders are returned to be used as seed crystals again; this process requires a lot of power in the kneading process, and after forming γ-sorbitol crystal grains, due to its The hardness is very high, and the wear and tear on the equipment is very serious, so the cost is high
The latter adopts the molten powder crystallization method. This crystallization method is to mix molten sorbitol and seed crystals by stirring. Due to the high viscosity of molten sorbitol, the mixing is insufficient, and the content of γ-sorbitol is only about 70%. Sex has not improved very well

Method used

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Examples

Experimental program
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Embodiment 1

[0020] Example 1 Preparation of γ-crystalline sorbitol

[0021] Take 100kg of liquid sorbitol with a mass concentration of 70%, and use a scraper evaporator to evaporate to a molten state with a mass concentration of 99.5%, wherein the evaporation pressure is -0.08MPa, and the temperature is 110°C. After the temperature drops to 105°C, the Spray under 0.5MPa pressure on the boiling sorbitol crystal seed, the quality of sorbitol crystal seed is 35kg, the dosage ratio of molten sorbitol and sorbitol crystal seed is 2:1, stir and mix while spraying, the stirring speed is revolution speed 10r / min, rotation speed 60r / min; after spraying, the temperature is 80°C, heat preservation and aging for 4h, and then cool down to 20°C at a speed of 10°C / h, the content of γ-crystalline sorbitol in the obtained product reaches 92.25%, the melting point It is 96.5°C; after cooling down, it is pulverized, and then the pulverized material is sprayed with 95°C clean steam for 5 minutes, and the fl...

Embodiment 2

[0022] Example 2 Preparation of γ-crystalline sorbitol

[0023] Take 100kg of liquid sorbitol with a mass concentration of 70%, and use a scraper evaporator to evaporate to a molten state with a mass concentration of 98%, wherein the evaporation pressure is -0.098MPa, and the temperature is 130°C. After the temperature drops to 120°C, the Spray under the pressure of 0.2MPa on the boiling sorbitol crystal seed, the quality of sorbitol crystal seed is 140kg, the dosage ratio of molten sorbitol and sorbitol crystal seed is 1:2, stir and mix while spraying, the stirring speed is revolution speed 2r / min, rotation speed 40r / min; after spraying, the temperature is 50°C, heat preservation and aging for 1h, and then cool down to 40°C at a speed of 6°C / h, the content of γ-crystalline sorbitol in the obtained product is 90.11%, the melting point It is 95.2°C; after cooling down, it is pulverized, and then the pulverized material is sprayed with 80°C clean steam for 10 minutes, and the f...

Embodiment 3

[0024] Example 3 Preparation of γ-crystalline sorbitol

[0025] Take 100kg of liquid sorbitol with a mass concentration of 70%, and use a scraper evaporator to evaporate to a molten state with a mass concentration of 99.2%, wherein the evaporation pressure is -0.093MPa, and the temperature is 120°C. After the temperature drops to 110°C, the Spray under the pressure of 0.3MPa on the boiling sorbitol crystal seed, the mass of sorbitol crystal seed is 70kg, the dosage ratio of molten sorbitol and sorbitol crystal seed is 1:1, stir and mix while spraying, the stirring speed is revolution speed 6r / min, rotation speed 50r / min; after spraying, the temperature is 60°C, heat preservation and aging for 3h, and then cool down to 30°C at a speed of 8°C / h, the content of γ-crystalline sorbitol in the obtained product reaches 95.32%, the melting point It is 97.3°C; after cooling down, it is pulverized, and then the pulverized material is sprayed with 90°C clean steam for 8 minutes, and the...

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Abstract

The invention discloses a preparation method of gamma-crystalline sorbitol. The preparation method comprises the following steps of: evaporating and concentrating VC (Vitamin C)-level liquid sorbitol to a molten state with solid mass concentration of more than 98%; cooling the molten sorbitol to 105 DEG C to 120 DEG C and spraying the cooled sorbitol to boiled sorbitol seed crystal while stirring and mixing, so that the molten sorbitol is crystallized to form the gamma-crystalline sorbitol; preserving the heat and curing the product obtained by the spraying, cooling the product, and crushing the product after the product is cooled to 20 DEG C to 40 DEG C; and jetting the clean steam to the crushed product and drying the crushed product to obtain the finished product gamma-crystalline sorbitol, wherein the fluidity of the obtained gamma-crystalline sorbitol product is improved to 80g / s or higher. The gamma-crystalline sorbitol obtained by the preparation method disclosed by the invention is high in gamma-form content of 90% or higher, high in melting point, unlikely to absorb moisture, good in fluidity, low in cost, capable of satisfying the application requirements in different fields including foods, daily chemicals, medicines and the like, and good in economic benefits and social benefits.

Description

technical field [0001] The invention relates to a preparation method of γ-crystalline sorbitol, which belongs to the field of biotechnology. Background technique [0002] Sorbitol is a typical hexahydric alcohol, which has the properties of polyhydric alcohols and can be oxidized, lipidated, and dehydrated. Using these properties, it can be used in medicine, plasticizers, emulsifiers, detergents, resins, coatings, It is used as a raw material in the production of different products in sectors such as adhesives. In the pharmaceutical industry, sorbitol is an important raw material for the production of vitamin C. Sorbitol can also be used as a substitute for ethylene glycol, propylene glycol and glycerin, and is widely used in industries such as food, sugar-free candy, tobacco, leather, cosmetics, papermaking, textiles, plastics, and rubber. [0003] With the in-depth research on the properties of sorbitol, the application of sorbitol in a wider range of fields has been put...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/26C07C29/78
Inventor 任尚美信成夫景文利于丽
Owner 山东绿健生物技术有限公司
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