Nanofiltration is a membrane separation technology that lies between ultrafiltration and reverse osmosis, with a molecular weight cut-off ranging fromIn the range of 200-1000 nm, the pore size is several nanometers. Since this membrane retains molecules larger than 1 nm with a higher than 95% rejection rate during the filtration process, it is called nanofiltration. Owing to the superior characteristics of nanofiltration separation technology, it has shown broad application prospects in many fields, such as scientific research units, biotechnology, and food industry. A significant feature of nanofiltration membranes is that the membrane itself is charged, which is an important reason for its high desalination performance under low pressure and the ability to remove inorganic salts from membranes with molecular weight cut-offs in the hundreds. We offer a variety of compact, rolled nanofiltration membrane elements with reasonable surface area/volume ratios. By employing different channel networks (13-120 mil), the width of the feed stream channel can be adjusted to accommodate various viscosities. To meet the needs of specific industries, we can select the appropriate nanofiltration membrane based on the customer's process requirements, the characteristics of the treatment system, and related technical specifications.
I. Experimental Machine Functions and Applications
This unit is a small-scale membrane separation device for laboratory use, including ultrafiltration, nanofiltration, and reverse osmosis, and is widely applicable in the separation, concentration, and purification of substances; the industrialization concept runs throughout the design process, making it suitable for researchers to explore various process parameters required for the industrial scaling-up of the equipment.
Two,Features of the Experimental Machine
The overall structure is compact, operation is simple, stability is excellent, the appearance is aesthetically pleasing, and the entire machine is made of stainless steel.
The power section utilizes a hydraulic diaphragm pump, featuring high head, stable pressure, and reliable performance.
● The system high-pressure pipeline is made of sanitary-grade stainless steel, offering high pressure resistance and corrosion resistance. Connections are made using sanitary grade clamp-style fittings, ensuring easy and reliable assembly.
The system includes pressure and temperature protection devices. The pressure protection device can automatically alarm and shut down when the pressure exceeds the safe limit; the temperature protection device can automatically alarm and shut down when the temperature exceeds the limit; the safety filter device can prevent system damage caused by the entry of solid particles.
The equipment utilizes various technologies identical to those in production machinery for controlling parameters such as pressure, temperature, flow, and flow rate, making the separation work in the lab closer to industrial reality and conducive to the industrialization of the process.
The equipment features variable frequency control, effectively expanding its application range; the system's processing capacity is 0-150L/hour (capacity is related to the properties of the material liquid), with a circulation volume of only 350-400ml, making it particularly suitable for laboratory use.
III.Test Bench Specifications
● Working Pressure: adjustable from 0-40bar, capable of meeting the separation needs for ultrafiltration, nanofiltration, and reverse osmosis of materials.
● Operating Temperature: 0-50°C, equipped with a small tube bundle heat exchanger for easy temperature control and adjustment.
● Small system circulation volume: approximately 350 ML
Material-specific imported diaphragm pump with high head, stable pressure, and reliable performance.
● Membrane Core: Imported rolled or hollow membrane elements, specifically designed for material concentration and separation, featuring acid and alkali resistance for cleaning, long service life, and anti-pollution properties.
● Narrow membrane core pore size distribution, high retention accuracy;
Equipped with high-temperature and high-pressure automatic shutdown protection device.
● Recirculating Tank: Made of SS304 material, highly corrosion-resistant; conical bottom, capable of significantly reducing the recirculation volume.
Piping System: Utilizes SS316 stainless steel sanitary pipes for easy disassembly and maintenance.
● Instrumentation and Electrical Systems: Equipped with temperature, pressure, and flow display gauges for accurate and convenient readings; electrical components and pressure sensors are all imported brands, ensuring safe, stable, and reliable operation of the equipment.
