Crystallization method for xylitol or maltol
A xylitol and crystallization technology, applied in the field of xylitol crystallization, can solve problems such as agglomeration, damage to the free-flowing state of products, and affect the industrial production of downstream products, and achieve good anti-caking and reduced adsorption effects
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Embodiment 1
[0014] The xylitol solution with a mass percentage content of 97.7% is concentrated to a solid content of 80.0% through a four-effect falling film evaporator, and then transported to an empty crystallization kettle through a pump, the stirring is controlled at 650rpm, and the vacuum degree is -0.09Mpa. Remove part of the water, and slowly cool the solution to 70°C, add 144g of sucrose fatty acid ester, then add 1800g of 100-150 mesh powder xylitol as a seed crystal, and keep the solution temperature at 60-70°C. 30 minutes and 60 minutes after adding the seed crystals, 144 g and 72 g of sucrose fatty acid ester were added, respectively. After 6 hours of crystallization, the material was discharged, centrifuged for 25 minutes, and sent to a drying bed for drying. The temperature of the hot air was 80°C, and the temperature of the cold air was 25°C.
[0015] The obtained product is analyzed for content, fluidity and water content, and the caking test is carried out by the followi...
Embodiment 2
[0021] The xylitol solution with a mass percentage content of 96.5% is concentrated to a solid content of 80.5% through a four-effect falling film evaporator, and then transported to an empty crystallization kettle through a pump, stirring at 550rpm, and a vacuum of -0.09Mpa. Remove part of the water, and slowly lower the temperature of the solution to 67°C, add 174g of sucrose fatty acid ester, and then add 1350g of 100-150 mesh powder xylitol as a seed crystal, and keep the solution temperature at 60-70°C. 30 minutes and 60 minutes after adding the seed crystals, 174 g and 87 g of sucrose fatty acid ester were added, respectively. After 6.5 hours of crystallization, the material was discharged, centrifuged for 20 minutes, and sent to a drying bed for drying. The temperature of the hot air was 81°C, and the temperature of the cold air was 27°C.
Embodiment 3
[0023] Concentrate the xylitol solution with a mass percentage content of 98.2% to a solid content of 78.8% through a four-effect falling film evaporator, then transport it to an empty crystallization kettle through a pump, control the stirring at 700rpm, and the vacuum degree is -0.09Mpa. Remove part of the water, and slowly cool the solution to 67.5°C, add 114g of sucrose fatty acid ester, and then add 1770g of 100-150 mesh powder xylitol as a seed crystal, and keep the solution temperature at 60-70°C. 30 minutes and 60 minutes after adding the seed crystals, 114 g and 57 g of sucrose fatty acid ester were added, respectively. After 8 hours of crystallization, the material was discharged, centrifuged for 20 minutes, and sent to a drying bed for drying. The temperature of the hot air was 79°C, and the temperature of the cold air was 26°C.
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