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Method for producing crystal maltose alcohol

A maltitol and maltose technology, applied in the field of sugar alcohol production, can solve the problems of low crystallization efficiency, less crystal volume, difficult centrifugal separation of crystals, etc., and achieves the effects of uniform crystal grains, increased crystallization speed, and high crystallization efficiency.

Inactive Publication Date: 2009-07-22
山东福田科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, cooling crystallization often requires a large crystallization tank. In industrial production, the cooling crystallization time often takes more than 72-90 hours. If the cooling is too fast, it is easy to damage the crystallization process, and the obtained crystals are difficult to centrifuge.
This method has a small amount of crystals and is uneconomical
In addition, at low temperature, the crystallization efficiency is very low, and the grain size cannot be controlled

Method used

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  • Method for producing crystal maltose alcohol

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Experimental program
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Effect test

Embodiment 1

[0026] The method for producing crystalline maltitol in this embodiment includes the following contents:

[0027] 1. Take 2000kg of a maltitol solution with a concentration of 50% by mass, and the content of maltitol in its solid solution is 93.5%, and evaporate and concentrate at a temperature of 65°C to obtain 1100kg of maltitol with a concentration of 85% by mass;

[0028] 2. Add 5kg of maltitol seed crystals to the above maltitol massecuite, and add 50ml of ethanol to reduce the viscosity of the solution;

[0029] 3. The maltitol massecuite is evaporated and crystallized under a vacuum of -550mmHg for 10 hours. The solution always maintains a boiling state. At the same time, the maltitol solution with a mass percentage concentration of 50% is continuously added to maintain the volume of the solution in the tank. ;

[0030] 4. When the amount of crystals produced in the maltitol massecuite reaches 70%, transfer the massecuite to a storage tank at a constant temperature of 70°C,...

Embodiment 2

[0032] The method for producing crystalline maltitol in this embodiment includes the following contents:

[0033] 1. Take 3000kd of a maltitol solution with a concentration of 30% by mass, and the content of maltitol in its solid solution is 92%, and evaporate and concentrate at a temperature of 80°C to obtain 920kg of maltitol with a concentration of 90% by mass;

[0034] 2. Add 0.92 kg of maltitol seed crystals to the above maltitol massecuite, and add 50 ml of methanol to reduce the viscosity of the solution;

[0035] 3. The maltitol massecuite is evaporated and crystallized under a vacuum of -750mmHg for 1 hour. The solution always maintains a boiling state. At the same time, the maltitol solution with a mass percentage concentration of 30% is continuously added to maintain the volume of the solution in the tank. ;

[0036] 4. When the amount of crystals produced in the maltitol massecuite reaches 50%, transfer the massecuite to a storage tank at a constant temperature of 100°...

Embodiment 3

[0038] The method for producing crystalline maltitol in this embodiment includes the following contents:

[0039] 1. Take 2000 kg of a maltitol solution with a concentration of 70% by mass, and the content of maltitol in its solid solution is 94%, and evaporate and concentrate at a temperature of 50° C. to obtain 1645 kg of a maltitol with a concentration of 80% by mass;

[0040] 2. Add 20kg of maltitol seed crystals to the above maltitol massecuite, and add 50ml of acetone to reduce the viscosity of the solution;

[0041] 3. The maltitol massecuite is evaporated and crystallized under a vacuum of -400mmHg for 20 hours. The solution always maintains a boiling state. At the same time, the maltitol solution with a mass percentage concentration of 70% is continuously added to maintain the volume of the solution in the tank. ;

[0042] 4. When the amount of crystals produced in the maltitol massecuite reaches 90%, transfer the massecuite to a storage tank at a constant temperature of ...

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Abstract

The invention discloses a method for producing crystal maltol, which comprises the following contents: a maltol solution is evaporated and concentrated to be supersaturated to obtain a maltol massecuite; maltol crystal seeds are added to the massecuite and the supersaturation degree and viscosity of the solution are controlled; the maltol massecuite is continuously evaporated and crystallized, the solution maintains boiling and maltol solution is added to continuously; when the grain quantity in the massecuite reaches 50 percent to 90 percent, the massecuite is transferred into a homoiothermal reserve tank and stirred until the temperature thereof is reduced to 20 DEG C to 40 DEG C; and then centrifugal separation is conducted to obtain a finished product of crystal maltol. The method can improve the crystallization efficiency of the maltol and render the grain be even and stable.

Description

Technical field [0001] The invention relates to a method for producing crystalline maltitol, in particular to a process for preparing crystalline maltitol by an evaporation crystallization method, and belongs to the technical field of sugar alcohol production. Background technique [0002] Maltitol is a sugar alcohol that is easy to absorb moisture and difficult to crystallize. It is very soluble in water but insoluble in methanol or ethanol. Usually the method of crystallization is mainly the cooling crystallization method, that is, after the maltitol solution is concentrated, crystal nuclei are formed and the temperature is slowly lowered, so that the crystal grains are continuously precipitated. Then use conventional methods such as centrifugation, fluidized bed drying, spray drying, etc. to separate the crystal grains from the mother liquor to form crystalline maltitol or dry powder. [0003] U.S. Patent Nos. 4,408,041 and 4,717,765 disclose a process for making anhydrous cry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/04C07H1/06
Inventor 王星云黄伟红李俊平杜瑞峰
Owner 山东福田科技集团有限公司
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