Complete set potato starch processing plant

Potato starch processing plant is the equipment that extract starch from fresh potato, dewater and dry to get finished food grade starch. Normally about 6-7 tons potato can get 1 ton starch as output product. Complete set potato starch processing plant from DOING company adopts world advanced wet processing technology, has advantages of reasonable design, lower energy consumption, high automation and stable quality of finished product.

Potato starch processing plant

Our potato starch processing plant adopts wet processing technology, which ensures high starch extraction rate. Based on terrain characteristics of factory land, our engineer can work out a more reasonable design in raw material transportation, equipment layout, etc. For example, in some potato starch factories, water flow is used to transport raw potatoes, transporting raw materials as well as achieving the effect of cleaning, which is a good use of the terrain height difference. Water sources, power supplies, warehouses, transportation, wastewater treatment and drainage etc. are all taken into account when designing the plant to make a more rational layout.

Potato starch processing plant at initial stage

Potato starch processing plant has high automation, which mainly consists of cleaning unit, raw material breaking and starch extraction unit, starch refining unit, dewatering and drying unit.

1.Potato cleaning unit

New harvest potatoes from the ground attaches impurities like sand, roots, weed, metals etc. Dry sieve machine firstly remove surface debris and then rotary washing machine will furnished potatoes completely by using countercurrent water flow. In the washing process, heavy sediments will fall down to the bottom of equipment and then be discharged. This is the first pre-treatment of raw materials in potato starch processing plant.

Potato washing machine

3. Raw material breaking and starch extraction unit

After raw potatoes are cleaned, they will be sent to next step for two-stage crushing. Cutting machine firstly cut potato into small pieces and then rasper machine crush material as much as possible to extract starch. In some potato starch factories, cutting machine is not used because that potato size is small and won't cause damage to rasper equipment. Material crushing rate is the main factor that influence starch yileld in potato starch processing plant.

Rasper

After starch is released from raw material in crushing unit, we will get starch mash. Next is to separate solid impuriteis from starch slurry. In this process centrifuge sieve and fine fiber sieve are main equipment used in potato starch processing plant.

Centrifuge sieve

4.Starch slurry refining unit

After we get starch slurry, next step is to refine it and separate liquid proteins and fats. In this process, hydrocyclone is the main equipment. The hydrocyclone station adopts principle of countercurrent washing to get purified starch slurry at outlet. This potato starch processing plant has functions of purification, recycling and concentration of starch milk.

Potato starch refining machine hydrocyclone

5. Starch dewatering and drying unit

After above processes, we get purified starch slurry.  To get standard dried starch powder, we still need to do water separation. Water separation in potato starch processing plant are finished by two machines-vacuum dehydration and flash dryer. Firstly vaccum dehydration machine can reduce water content to around 38-40%, then flash dryer can make starch output with moisture content about 14%-18%.

Vaccum dehydrator

Complete set potato starch processing plant can also matched with automatic control system like MCC, OCC, PLC to achieve high automation of the whole plant. Some starch factories ask for labratory equipment to test finsihed starch quality. Different configurations of production line will be desgined based on clients' budget and capacity requirements. Don't hesitate to contact us if you are looking for a complete proposal for potato starch production.