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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 less crystals, low crystallization efficiency, difficult centrifugation of crystals, etc., and achieve the effects of increased crystallization speed, uniform crystal grains, and high crystallization efficiency

Inactive Publication Date: 2011-09-21
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
  • Method for producing crystal maltose alcohol

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The method for producing crystalline maltitol of the present embodiment comprises the following contents:

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

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

[0029] 3. Evaporate and crystallize the maltitol massecuite under the pressure of vacuum degree of -550mmHg for 10 hours, the solution is always in a boiling state, and at the same time continuously replenish maltitol solution with a mass percentage concentration of 50% to maintain the volume of the solution in the tank ;

[0030] 4. When the amount of crystal grains produced in the maltitol massecuite reaches 70%, transfer the massecuite...

Embodiment 2

[0032] The method for producing crystalline maltitol of the present embodiment comprises the following contents:

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

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

[0035] 3. Evaporate and crystallize the maltitol massecuite under the pressure of vacuum degree of -750mmHg for 1 hour, the solution is always in a boiling state, and at the same time, continuously replenish the maltitol solution with a mass percentage concentration of 30% to maintain the volume of the solution in the tank ;

[0036] 4. When the amount of crystal grains produced in maltitol massecuite reaches 50%, transfer the...

Embodiment 3

[0038] The method for producing crystalline maltitol of the present embodiment comprises the following contents:

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

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

[0041] 3. Evaporate and crystallize the maltitol massecuite under the pressure of vacuum degree of -400mmHg for 20 hours, the solution is always in a boiling state, and at the same time, continuously replenish the maltitol solution with a mass percentage concentration of 70% to maintain the volume of the solution in the tank ;

[0042] 4. When the amount of crystal grains produced in the maltitol massecuite reaches 90%, transfer the massecuite to...

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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 canimprove 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 evaporative crystallization, which belongs to the technical field of sugar alcohol production. Background technique [0002] Maltitol is a sugar alcohol that is easy to absorb moisture and is difficult to crystallize. It is easily soluble in water and 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 lowered slowly, 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 producing anhydro...

Claims

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Application Information

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Patent Type & Authority Patents(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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