Working Principle
Horizontal screw centrifuge is a highly efficient centrifugal separation equipment, and its working principle is mainly based on the principle of centrifugal sedimentation. In the equipment, the drum and the rotor rotate at high speed in the same direction with a certain differential speed. The material is continuously introduced into the inner cylinder of the feeding spiral from the feed pipe and enters the drum after acceleration. Under the action of the centrifugal field, the heavier solid phase is deposited on the drum wall to form a sediment layer, which is continuously pushed to the cone end of the drum by the spiral pusher and discharged from the machine through the slag discharge port. The lighter liquid phase forms an inner liquid ring, which continuously overflows the drum from the overflow port at the large end of the drum and is discharged from the machine through the liquid discharge port.
Application advantages
1. Efficient separation:
The horizontal screw centrifuge can realize continuous feeding, separation, washing and unloading at full speed, greatly improving production efficiency.
2. Strong adaptability:
The equipment is suitable for separating suspensions containing solid matter with a particle size greater than 0.005mm and a concentration range of 2%~40%, and is widely used in the separation of different types of sugar materials.
3. No filter aid is required:
Compared with vacuum drum and plate and frame filter presses, the horizontal screw centrifuge does not require the addition of any filter aid during the separation process, avoiding the problem of adding impurities.
4. Energy saving and consumption reduction:
The horizontal centrifuge can reduce energy consumption and material waste during the separation process, reducing production costs.
Application examples in the sugar industry
In the production process of starch sugar, the decanter centrifuge is mainly used in the solid phase separation process. Taking protein separation as an example, the decanter centrifuge is used for separation in the post-waxing protein separation process and the post-saccharification protein separation process. Through the separation of the decanter centrifuge, impurities such as protein in the starch milk can be effectively removed, and the purity and quality of the starch syrup can be improved.
Economic Benefit Analysis
According to actual application data, the decanter centrifuge performs well in the solid phase separation of the starch sugar production line. Taking the starch sugar production line with an annual output of 100,000 tons as an example, the use of a decanter centrifuge for solid phase separation can increase by-product income and reduce cost expenditure compared to the traditional plate and frame filter. The comprehensive calculation shows that the annual income can be increased by more than 1.4 million yuan.
Summary and Outlook
Decanter centrifuges have been widely used in the sugar industry for their high efficiency, continuity and strong adaptability. With the continuous advancement of technology and the continuous optimization and upgrading of equipment, the application prospects of decanter centrifuges in the sugar industry will be broader. In the future, we can expect decanter centrifuges to play an important role in more sugar-making process links and provide strong support for the sustainable development of the sugar industry.