Henan Yide is specialized in starch processing production lines and corresponding equipment. We are one of the few suppliers in China that can undertake complete starch processing projects.
Process description of potato starch processing equipment
The production process of potato starch
Weighing → stone removal → potato washing → crushing → slag slurry separation → sand removal → dehydration → refining → dehydration → drying → packaging → storage
Detailed description of the starch processing equipments
1. The basic principle of cleaning The role of cleaning:
It is mainly to remove the sediment on the outer skin layer of the sweet potato, and to remove the skin of the tuber of the sweet potato. Washing fresh sweet potatoes or dried sweet potato chips as the raw material for starch production is the basis of starch quality. The cleaner the washing, the better the starch quality.
2. The basic principle of crushing The function of crushing:
Potato starch is mainly stored in the fleshy part of the root tuber, and only a small amount is stored in the endodermis. The purpose of disintegration is to destroy the tissue structure of the sweet potato, so that the tiny starch granules can be smoothly disintegrated and separated from the tuber. The starch released from the cells is called free starch; the starch remaining in the cells inside the dregs is called bound starch.
3. The basic principle of sieving:
Sweet potato residue is a slender fiber, the volume is larger than starch granules, the expansion coefficient is also larger than starch granules, and its specific gravity is lighter than starch granules. The crushed puree is made of water as a medium to make potato residues. The starch slurry contained in the water is further filtered out.
4. The basic principle of purification and sedimentation:
The specific gravity of mud and sand is greater than that of water and greater than that of starch particles. According to the principle of specific gravity separation, the use of cyclones to remove sand or the sedimentation method of flow troughs can achieve a more ideal effect. . The specific gravity of yellow pulp is close to water and lighter than starch granules. Its shape is palm-shaped. The longer the processing period, the greater the glue performance. It sticks to the sieve, sticks to the starch granules, and is difficult to separate. Therefore, fresh raw materials are required. The process is short and separated in time.
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5. The basic principle of dehydration:
The concentrated starch slurry still contains a lot of water, and it can be dried after further dehydration.
6. The basic principle of drying:
At present, the entire process time of airflow drying (also called flash drying) generally used in starch factories is completed in an instant. Therefore, the internal water of starch granules has been dried before gelatinization, so gelatinization or degradation will not occur.
When the wet starch is in contact with hot air, the hot air transfers heat energy to the surface of the wet starch, and then from the surface to the inside. This process is the heat transfer process; at the same time, the moisture in the wet starch comes from the inside of the material in liquid or gaseous state. Diffusion to the starch surface, from the starch surface to the hot air through the air film, this is a mass transfer process. It uses high-temperature airflow and wet starch to perform heat exchange in the drying tube in a balanced manner, so that the dried starch is powdered, which can be packaged and stored after cooling.
Main features of potato starch manufacturing plant:
1. Advanced design technology, enclosed production, clean and safe.
2. The extraction rate of potato starch is high, and the energy cost is low, which saves the input cost of potato starch production.
3. Automatic continuous production to ensure production and quality
