JIUYI Dehydrator Equipment
In the cassava starch processing industry, effectively handling starch residues is crucial for resource utilization and cost control. Here are several practical cases demonstrating successful dehydration of cassava starch residues, showcasing diverse approaches based on different enterprise scales and requirements.
1.Large scale Starch Enterprise’s High – efficiency Dehydration Model
A large scale cassava starch production enterprise, with a daily output of thousands of tons of cassava starch, faced significant challenges in processing the vast amount of accompanying starch residues. The enterprise introduced advanced belt filter presses for dehydration.
During operation, the starch residues first underwent pretreatment. Screw conveyors transported the residues to vibrating screens, which removed impurities and agglomerates, ensuring uniform materials. Subsequently, the residues entered the belt filter press. In the gravity dehydration zone, a large amount of free water was rapidly drained. Then, in the wedge – shaped pressing zone and high – pressure pressing zone, the coordinated action of filter belts and rollers reduced the water content of the starch residues from the initial 80% – 90% to 45% – 50%. The equipment could handle hundreds of tons of starch residues per day with stable energy consumption and reasonable operating costs.
The dehydrated starch residues were utilized in multiple ways. Part of them was sold as feed raw materials to surrounding breeding enterprises. Due to their low water content and stable quality, they were highly favored by farmers. Another part was transported to biomass fuel processing plants, where they were further processed into fuel pellets, realizing resource recycling. This not only brought additional revenue to the enterprise but also reduced overall production costs and environmental pressure.
2.Medium sized Processing Factory’s Precise Dehydration with Plate and Frame Filter Press
Constrained by limited space and budget, a medium sized cassava starch processing factory opted for plate and frame filter presses for starch residue dehydration. After simple pretreatment, the starch residues were pumped into the filtration chambers composed of filter plates and frames. Once pressure was applied by the pump, water passed through the filter cloth, and filter cakes with low water content were formed.
Although the plate – and – frame filter press operated intermittently, its excellent dehydration performance reduced the water content of starch residues to around 40%, meeting the factory’s requirements for dehydration depth. The factory fermented the dehydrated starch residues to produce high – protein feed additives, which were sold to feed production enterprises, opening up a new profit source. Moreover, the good dehydration effect reduced water interference during subsequent fermentation, improving both the fermentation efficiency and product quality.
3.Small scale Workshop’s Flexible Application of Screw Extrusion Dehydrator
A small scale cassava starch workshop, with a relatively low daily output, considered cost and equipment footprint and chose a screw extrusion dehydrator for starch residue dehydration. Workers directly fed the starch residues into the inlet. As the screw shaft rotated and advanced, and the material space gradually decreased, the increasing pressure squeezed out the water.
This equipment was simple in structure and convenient to operate. Although its processing capacity was limited, it satisfied the daily dehydration needs of the small workshop, reducing the water content to 55% – 60%. The dehydrated starch residues were sold directly to surrounding farmers for feeding pigs and chickens. With affordable prices and extended storage time after dehydration, they were well – received in the local rural market. For the small – scale workshop, the screw extrusion dehydrator solved the starch residue treatment problem at a low cost and also generated certain economic benefits.
4.Comprehensive Utilization Enterprise’s Multi equipment Collaborative Dehydration Solution
An enterprise specializing in the comprehensive utilization of cassava resources established a multi equipment collaborative dehydration system for cassava starch residues. First, centrifuges were used for preliminary dehydration of a large quantity of starch residues. The centrifugal force quickly separated most of the free water, reducing the water content to 60% – 65%. Then, the preliminarily dehydrated residues entered the belt filter press for further extrusion dehydration, lowering the water content to around 45%. Finally, low – temperature vacuum drying equipment was employed for deep drying, stably controlling the water content at 12% – 15%.
The enterprise utilized the deeply dehydrated and dried starch residues in various ways. Part of them was finely processed into high – quality dietary fiber products for use in the food additive industry. Another part served as high – quality fertilizer raw materials. After adding specific nutrients, they were made into organic fertilizers for fruit and vegetable cultivation. The collaborative operation of multiple devices not only improved dehydration efficiency and quality but also greatly expanded the application value of cassava starch residues, maximizing resource utilization, bringing substantial profits to the enterprise, and setting an industry benchmark for efficient resource utilization.