In modern industrial production, solid-liquid separation is a crucial process involving many industries such as environmental protection, energy, food, chemical, pharmaceutical, and petroleum. Among many separation equipment, the Decanter Centrifuge has become the preferred equipment in the field of solid-liquid separation due to its advantages of strong continuity, high degree of automation, large processing capacity, and wide adaptability. As a leading centrifuge manufacturer in China, we focus on the technical innovation and market application of decanter centrifuges, and are committed to providing high-performance, cost-effective solutions to global customers.
Working Principle of Decanter Centrifuge
Decanter centrifuge is a device that uses the principle of centrifugal sedimentation to perform continuous solid-liquid separation. Its core structure consists of a drum, a screw conveyor, a differential, a drive device and a frame.
1. Principle of centrifugal sedimentation
Under the action of centrifugal force, the solid particles in the material settle to the inner wall of the drum due to their large specific gravity, forming a solid phase layer; while the liquid with a smaller specific gravity is located inside the solid phase, forming a liquid phase layer. By adjusting the speed of the drum, the sedimentation effect can be effectively controlled.
2. Function of the screw conveyor
The screw and the drum rotate at a certain differential speed, and the solid phase deposited on the drum wall is continuously scraped out and discharged from the equipment, while the clarified liquid phase is continuously discharged from the other end to achieve the separation of solid and liquid phases.
3. Differential control
The differential is a key component for controlling the speed difference between the screw and the drum, which directly affects the separation effect and the dryness of the slag. We use high-precision planetary gear differentials or hydraulic differential systems to ensure that the equipment remains stable and adjustable even at high speeds.
Core advantages of decanter centrifuge
1. Continuous operation, high efficiency
Decanter centrifuge can realize continuous operation around the clock, with processing capacity ranging from 1m³/h to 100m³/h, which is particularly suitable for occasions with large flow and long-term operation.
2. High degree of automation
Through the PLC control system and touch screen operation interface, real-time monitoring and automatic adjustment of multiple parameters such as speed, differential speed, flow, temperature, etc. are realized, greatly reducing manual operation and maintenance costs.
3. Strong adaptability
Applicable to a variety of materials: high-concentration, high-viscosity, and difficult-to-sediment materials can also be efficiently processed, suitable for complex scenes such as urban sewage, industrial wastewater, food residues, petroleum sludge, papermaking black liquor, alcohol residue, etc.
4. Stable separation effect
We adopt an optimized spiral structure design, combined with variable frequency drive technology and liquid level adjustment system, so that the clear liquid after separation is clearer, and the slag dryness is as high as 25%-35%.
5. Energy saving and environmental protection
The equipment has low energy consumption and does not require the addition of chemical agents or filter media; the closed operation is odorless and leak-free, meets national environmental protection standards, and helps enterprises achieve the “dual carbon” goal.
Typical application areas
1. Urban sewage and industrial wastewater treatment
In sewage treatment plants and industrial parks, the horizontal screw centrifuge can effectively treat the primary sedimentation tank sludge and residual activated sludge, realize sludge concentration and dehydration, reduce the sludge volume, and reduce the subsequent transportation and treatment costs.
2. Food processing and beverage industry
Used in starch recovery, alcohol residue separation, soy milk residue separation, fruit and vegetable pulp purification and other links to improve product quality and raw material utilization.
3. Chemical and pharmaceutical fields
In the fields of fine chemicals, dyes, Chinese medicine extraction, antibiotic fermentation broth, etc., the horizontal screw centrifuge can achieve efficient separation of complex mixtures and improve purity and yield.
4. Petroleum and mining fields
It can be used for oil sludge treatment, drilling waste slurry separation, tailings slurry dehydration, etc., to improve resource recovery rate and reduce environmental risks.
Purchase suggestions
1. Selection suggestions
When purchasing a horizontal screw centrifuge, customers are advised to consider the following factors comprehensively:
Processing capacity requirements (m³/h)
Material characteristics (concentration, viscosity, temperature, acidity and alkalinity)
Separation target (dryness of slag, clarity of clear liquid)
Operation mode (continuous or intermittent, whether pretreatment is required)
Our company provides professional selection services and material experimental analysis to ensure that the equipment and process are perfectly matched.
The decanter centrifuge is not only a piece of equipment, but also a solution for improving efficiency, saving energy and reducing emissions, and green development. Today, when environmental regulations are becoming increasingly stringent and resource utilization is receiving much attention, choosing a decanter centrifuge with excellent performance means choosing a future of technological innovation and sustainable development.
We always adhere to the concept of “quality-oriented, innovation-driven, and service-oriented”, and look forward to working with global customers to create new heights in industrial separation technology. If you are looking for efficient and reliable solid-liquid separation equipment, please contact us for customized solutions and free technical support.
