As people pay more and more attention to food health and quality, the production of oil products such as vegetable oil, animal oil, and industrial oil also faces higher purity, safety, and cost control requirements. Whether it is edible oil production or industrial lubricant processing, oil separation technology is a key link that affects the quality of the final product and corporate profits. Traditional separation methods such as sedimentation and filtration have low efficiency, high energy consumption, and incomplete impurity removal, which can no longer meet the needs of modern production.
Against this background, the disc stack centrifuge has become an indispensable equipment on the production line of the oil industry with its technical advantages such as high speed, high efficiency, and continuous separation. It not only improves the purity of oil, but also helps enterprises achieve the goals of energy saving and consumption reduction, quality improvement and efficiency increase, and has gradually become an important investment direction for oil processing companies at home and abroad.
Working principle and structural advantages of disc centrifuge
1. Basic principle
The disc centrifuge is a high-speed rotating separation device that relies on the principle of centrifugal force to perform liquid-liquid or liquid-solid-liquid three-phase separation. When the mixed grease liquid containing impurities enters the high-speed rotating drum from the feed port, the oil, water and impurities are quickly separated in the centrifugal field, and the light phase (such as oil) approaches the center, and the heavy phase (such as water and solid impurities) moves outward. Through the rationally designed disc structure and liquid outlet channel, the three-phase materials can be quickly separated and discharged separately.
2. The separation acceleration effect of the disc structure
One of the core advantages of the disc centrifuge is that it is equipped with conical discs with multiple tilt angles. These discs divide the fluid layer by layer, shortening the separation path, thereby greatly improving the separation speed and accuracy. Compared with traditional sedimentation centrifugal equipment, the disc centrifuge can complete more thorough separation in a shorter time, especially for mixtures with small density differences such as grease.
3. Automatic slag discharge system and cleaning function
Modern disc centrifuges are widely equipped with automatic slag discharge devices, which can automatically remove deposited solid impurities at a fixed time or under a set pressure, greatly improving the continuous working capacity and operating stability of the equipment, and reducing manual intervention and downtime.
Typical applications of disc centrifuges in oil separation
1. Edible vegetable oil (soybean oil, rapeseed oil, palm oil, etc.)
In the production process of edible vegetable oil, especially in the oil refining stage, disc centrifuges are mainly used for:
Degumming and separation of crude oil: removal of colloidal impurities such as phospholipids and proteins;
Separation of soap stock after neutralization reaction: separation of soap stock generated by neutralization reaction from oil;
Dehydration after washing: removal of residual water and improvement of oil stability.
Through high-speed disc centrifuges, oil products can remove impurities and water in a short time, improve transparency and stability, and effectively control peroxide value and acid value.
2. Animal oil (fish oil, lard, chicken oil, etc.)
In animal oil processing, disc centrifuges are mainly used for:
Separation of fat, protein residue, water;
Removal of blood and colloidal substances;
Improvement of oil precision and oil yield.
This equipment is particularly suitable for high-temperature liquid processing, which helps to retain nutrients in oil such as DHA and EPA, and is widely used in the purification and production of health products and pet food raw materials.
3. Industrial oil (lubricating oil, waste oil regeneration, etc.)
In industrial oil applications, disc centrifuges can be used to:
Recover useful oil from waste oil;
Separate water and particulate impurities to extend the life of the lubrication system;
Recycle industrial oil in line with the trend of green manufacturing.
Disc centrifuges have high throughput processing capabilities and automated control systems, and are particularly suitable for factories with high requirements for production continuity.
Economic Benefit Analysis of Disc Centrifuge
1. Increase Output and Oil Recovery Rate
After using disc centrifuge, the impurities remaining in oil are greatly reduced, and the net oil rate is generally increased by 3%-5%. In an oil processing plant with an annual output of 10,000 tons, it means that hundreds of tons of pure oil can be recovered each year, directly creating millions of economic value.
2. Reduce energy and labor costs
The disc centrifuge can realize automatic slag discharge and automatic operation, reduce manual intervention, reduce operating errors and labor costs. At the same time, compared with traditional methods such as heat treatment and static sedimentation, its separation time is short, energy consumption is lower, and the unit processing cost is reduced by 20%-30%.
3. Reduce subsequent processing pressure
Since the disc centrifuge can greatly reduce the impurity content in the early stage of refining, the burden of subsequent processes such as decolorization and deodorization is reduced, the use of auxiliary materials is reduced, and processing costs are further saved.
4. Extend the service life of equipment
The separated oil is cleaner, which effectively reduces problems such as equipment corrosion and pipeline blockage caused by impurity deposition, thereby reducing maintenance frequency and spare parts replacement costs.
5. Meet the needs of environmental protection and sustainable development
Modern disc centrifuges support closed processing systems, effectively preventing oil and gas volatilization and secondary pollution. Efficient separation and treatment of wastewater and waste residues also helps improve corporate environmental performance and reduce emission fines and environmental compliance costs.
How to choose a suitable disc centrifuge
1. Clarify the application scenario and separation requirement
Parameters such as the type of oil, temperature, and impurity content determine the specifications and configuration of the disc centrifuge. It is recommended to provide detailed sample test data before purchasing to obtain a customized solution.
2. Investigate the material and sealing performance of the equipment
Since oil may contain corrosive components or high-temperature treatment processes, corrosion-resistant materials such as 316L stainless steel should be selected, and a good sealing structure should be equipped to ensure food safety and equipment life.
3. Pay attention to automation and control systems
Choosing a disc centrifuge equipped with intelligent functions such as PLC control, remote monitoring, and automatic slag discharge can effectively reduce the difficulty of operation, improve safety and processing efficiency.
As the oil and fat industry continues to develop towards high quality, high efficiency and low energy consumption, disc centrifuges are becoming one of the core equipment for industry upgrading and transformation with their mature technology, high separation accuracy and high automation level. As a professional disc centrifuge manufacturer, we will continue to adhere to technological innovation and quality first to help customers achieve maximum production efficiency and sustainable development goals.
If you have oil and fat separation related project needs, please contact us for free sample testing and customized solutions. We will wholeheartedly provide you with high-performance disc centrifuge products and professional services.
