Can sugar mills use spray drying to make products?
Sugar factories have traditionally used crystallization to make products. After several cooking, they cannot fully recover sucrose in the material. Many other food industries use spray-drying or fluidized-bed drying to manufacture products that can turn all liquid materials into solid products at one time. Can the sugar industry use this method?
Studies abroad have been conducted very early. Guangdong had conducted production-scale tests in three sugar mills in the 50s, 60s, and 70s of the 20th century (high-pressure spray, air spray, and high-speed centrifugal spray, respectively. Drying chamber volume. For dozens of cubic meters, the raw material for the application is sugarcane syrup), but unsuccessful. The main problems are:
1. The dried product is easy to absorb moisture, because the cane juice contains a large number of high molecular organic materials, their water absorption is very strong, it is easy to absorb the moisture in the air, so that the overall product into a paste, it is extremely difficult Save and use.
2. The heat utilization rate of this method is very low, and the heat energy required to evaporate a certain amount of moisture is several times higher than that of the crystallization method.
3, the production capacity of the equipment is very low, the evaporation strength of the drying room is low, and a large drying equipment can only produce a small amount of products.
The main problem is the first point. To avoid this problem, the raw materials must be refined (for example, using white sugar or the raw sugar solution is subjected to clarification and ion exchange resin treatment). At present, Japan has used the process of making refined sugar to produce a small amount of instant sugar (Q sugar) by spray drying. Other countries also use a similar drying method to produce a small amount of product (such as T-sugar, agglomerated sugar, amorphous sugar, etc.) in a refined sugar solution.
Studies abroad have been conducted very early. Guangdong had conducted production-scale tests in three sugar mills in the 50s, 60s, and 70s of the 20th century (high-pressure spray, air spray, and high-speed centrifugal spray, respectively. Drying chamber volume. For dozens of cubic meters, the raw material for the application is sugarcane syrup), but unsuccessful. The main problems are:
1. The dried product is easy to absorb moisture, because the cane juice contains a large number of high molecular organic materials, their water absorption is very strong, it is easy to absorb the moisture in the air, so that the overall product into a paste, it is extremely difficult Save and use.
2. The heat utilization rate of this method is very low, and the heat energy required to evaporate a certain amount of moisture is several times higher than that of the crystallization method.
3, the production capacity of the equipment is very low, the evaporation strength of the drying room is low, and a large drying equipment can only produce a small amount of products.
The main problem is the first point. To avoid this problem, the raw materials must be refined (for example, using white sugar or the raw sugar solution is subjected to clarification and ion exchange resin treatment). At present, Japan has used the process of making refined sugar to produce a small amount of instant sugar (Q sugar) by spray drying. Other countries also use a similar drying method to produce a small amount of product (such as T-sugar, agglomerated sugar, amorphous sugar, etc.) in a refined sugar solution.
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