Nanofiltration is a membrane separation technology that falls between ultrafiltration and reverse osmosis, with a molecular weight cut-off ranging fromIn the range of 200-1000 nm, the pore size of this membrane, which retains over 95% of molecules about 1 nm in size during the permeation process, is referred to as nanofiltration. Owing to the superior characteristics of nanofiltration separation technology, it shows great application prospects in various fields such as electronics, biochemical engineering, and food industry. A significant feature of nanofiltration membranes is that the membrane itself is charged, which is an important reason why it still exhibits high desalination performance at low pressure and can remove inorganic salts from membranes with a molecular weight cut-off of several hundred. We offer a variety of compact, rolled nanofiltration membrane elements with a reasonable surface area/volume ratio. By adopting different channel networks (13-120 mil), the width of the feed fluid channel can be adjusted to accommodate fluids of various viscosities. To meet the requirements of certain special industries, we can select the appropriate nanofiltration membrane for customers based on their process requirements, treatment systems, and relevant technical specifications.
I. Functional and Application Description of the Small-Scale Nanofiltration Experimental Device
This unit is a laboratory-scale ultrafiltration, nanofiltration, and reverse osmosis membrane separation device, widely applicable in the separation, concentration, and purification of substances; the industrialization concept贯穿 the design process, suitable for researchers to explore various process parameters required for the industrial scaling-up of the equipment.
Two,Features of the experimental device
The overall structure is compact, easy to operate, and highly stable with a pleasing appearance. The entire machine is made of stainless steel.
The power section utilizes a hydraulic diaphragm pump, offering high lift and stable pressure with reliable performance.
● The system high-pressure piping is made of sanitary-grade stainless steel, offering high pressure resistance and corrosion resistance. The connections use sanitary-grade clamp-style fittings for 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 goes beyond the set limit; the safety filter device prevents system damage caused by the entry of solid particles.
The equipment employs various technologies identical to those used in production equipment for controlling parameters such as pressure, temperature, flow, and velocity, bringing the laboratory's separation work closer to the actual industrial conditions, which is 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 nature of the material), with a recirculating volume of only 350-400ml, making it particularly suitable for laboratory use.
Section 3:Experimental Apparatus Parameters
● Working Pressure: Adjustable from 0-40bar, capable of meeting the separation requirements 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.
System Circulation Volume: Approximately 350ml;
Material-specific imported diaphragm pump for hydraulic applications, 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.
● Recirculating Tank: Made of SS304 material with excellent corrosion resistance; conical bottom to significantly reduce the recirculating volume.
Pipe System: Utilizing 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 equipment operation.
